Rev-i-1

Oscilloquartz S.A. - 5548B SASE Unit 945 554 8B1 Page: 1 /110 Project Nº: 5548B-1 Document Type: OPERATING MANUAL Version: English Author: OSA Desaules Marc Revision: I Last Up-date: 30.08.2006 Creation: 30.05.97

OSA 5548B SASE STAND-ALONE SYNCHRONISATION EQUIPMENT

OPERATING AND INSTRUCTION MANUAL

Model 945 554 8B1

www.oscilloquartz.com


SAFETY CONSIDERATIONS

GENERAL This manual contains information, cautions, and warnings which must be followed by the service person to ensure safe operation and to retain the equipment in a safe condition.

SAFETY WARNINGS

BEFORE SWITCHING ON THE EQUIPMENT, its protective earth terminals must be connected to the protective conductor of the (mains) power cord or the station earth. The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. The protective action must not be negated by the use of an extension cord (power cable) without a protective conductor (grounding). Make sure that only fuses with the required rated current and of the specified type (normal blow, time delay, etc.) are used for replacement. The use of repaired fuses and the short-circuiting of fuse holders must be avoided. Whenever it is likely that the protection offered by fuses has been impaired, the equipment must be made inoperative and be secured against any unintended operation.

GROUNDING

Any interruption of the protective (grounding) conductor (inside the equipment) or disconnecting the protective earth terminal is likely to make this equipment dangerous. Intentional interruption is prohibited.

HIGH VOLTAGE Warning - These servicing instructions are for use by qualified personnel only. To avoid dangerous electric shock, do not perform any servicing other that that contained in the operating instructions unless you are qualified to do so.

CAUTIONS LINE VOLTAGE CONTROL

BEFORE CONNECTING THE POWER LINES ON THE EQUIPMENT, make sure the power sources are compatible with the power inputs of the equipment. Verify that the correct fuses are installed.

GROUNDING BEFORE SWITCHING ON THIS EQUIPMENT, ensure that all devices connected to it are connected to its protective (earth) ground. (Grounding one conductor of a two-conductor outlet is not sufficient.)

DISCONNECTING THE EQUIPMENT

The disconnecting of the equipment from the external power is made by pulling out the power connectors on the rear panel.


ESD CONSIDERATIONS

Although no dangerous voltages are present within the unit, it is always good practice to exercise extreme care when handling electronics equipment. The following warnings and cautions must therefore be observed to avoid serious damage to equipment.

G E N E R A L

Exercise caution when working with or around electrical/electronics equipment. Dangerous voltages can cause serious injury. Exercise extreme care when handling any electronics equipment as it contains precision parts that can be damaged by improper handling.

C A U T I O N

Disconnect the unit from its power supply source before cleaning, inspecting or disassembling. Avoid touching connector pin surfaces. Foreign matter deposited on contact surfaces can cause corrosion, and eventually lead to degradation of performance. In addition, do not use abrasives to clean contact/pin surfaces. Each module contains semiconductor devices which can be damaged by electrostatic discharges. It is advisable to take anti-static precautions when handling electronic boards or static sensitive components. Use an approved anti-static bracelet in accordance with company practice.


CONTENTS

1. INTRODUCTION 7 1.1. Documentation Structure 7

1.1.1. Operating Portion 7 1.1.2. Technical Portion 7

1.2. Optional expansion/upgrades 7 1.3. Addendum 7 1.4. Certification 7

2. GENERAL DESCRIPTION 8 2.1. Functions of the OSA 5548B SASE 8 2.2. System description 9

2.2.1. Functional block diagram of the OSA 5548B SASE 9 2.2.2. Functional description 10

2.2.2.1. Input Interface Units (IIU) 10 2.2.2.2. Input Line Selectors (ILS) 10 2.2.2.3. Tracking Oscillator and Oscillator Modules 10 2.2.2.4. Phase-Stepper Switches 11 2.2.2.5. Output Interface Units (OIU) 11 2.2.2.6. Re-Timing Units (RTU) 12 2.2.2.7. Monitoring & Alarms Controller (MAC) & Embedded System Manager (ESM) 13 2.2.2.8. Power Supply Units (PSU) 13

2.3. Equipment Overview 14 2.4. Front Panel layout / Equipment configuration: 15

2.4.1. Module Compatibility Cross-Reference Table, 5548B release 2.0: 16 2.4.2. Module Compatibility Cross-Reference Table, 5548B release 2.1: 17 2.4.3. Module Compatibility Cross-Reference Table, 5548B release 2.2: 18

2.5. Connectors Panel layout: 19 2.5.1. Connectors panel layout (except Outputs Groups) 19 2.5.2. Connectors panel layout (Outputs Groups only) 20

2.6. Plug-in modules 21 2.6.1. Input Interface Unit "IIU Line Receiver with Measurement" [Option for slots A1 to A6] 21 2.6.2. Input Interface Unit "IIU 2.048 Mbit/s G.703-6 with Measurement" [Option for slots A1 to A6] 22 2.6.3. Input Interface Unit "IIU 1.544 Mbit/s G.703-2 with Measurement" [Option for slots A1 to A6] 23 2.6.4. GPS Input Interface "GPS-I" [Option for slots A3/A4 and A5/A6] 24 2.6.5. GPS Input Interface "GPS-I with Measurement " [Option for slots A3/A4 and A5/A6] 25 2.6.6. GPS Input Interface "GPS-I2 with Measurement " [Option for slots A3/A4 and A5/A6] 26 2.6.7. Output Interface Module "OIU 16 Outputs 2.048 MHz G.703-10" [Option for slots A7 to A14] 27 2.6.8. Output Interface Module "OIU 16 Outputs 2.048 Mbit/s G.703-6" [Option for slots A7 to A14] 28 2.6.9. Output Interface Module "OIU 16 Outputs 1.544 Mbit/s G.703-2" [Option for slots A7 to A14] 29 2.6.10. Output Interface Module "OIU 16 Outputs 64 kbit/s Composite Clock" [Option for slots A7 to A14] 31 2.6.11. Output Interface Module "OIU 16 Outputs Synthesised " [Option for slots A7 to A14] 32 2.6.12. Re-timing Output Interface Module "RTU-E1 2.048 Mbit/s" [Option for slots A7 to A14] 33 2.6.13. Re-timing Output Interface Module "RTU-T1 1.544 Mbit/s" [Option for slots A7 to A14] 34 2.6.14. Management & Alarms Controller 'MAC-R' (option for slot A15) 35 2.6.15. Management & Alarms Controller 'MAC 2-R' (option for slot A15) 36 2.6.16. Power Supply Units 'PSU' (slots A16 and A17) 37 2.6.17. Input Line Selector Module 'ILS' (slots A18 and A19) 38 2.6.18. Tracking Oscillator Module 'TOM' (slots A20 and A25) 39 2.6.19. Oscillator Module 'OM' (slots A21 and A24) 40


2.6.20. Phase-Stepper Switch 'PSS' [Slots A22 and A23] 41 2.6.21. Embedded System Manager 'ESM' (slot A26) 42

2.7. GPS Antenna Systems 43 2.7.1. GPS Roof Antenna 43 2.7.2. GPS Compact Magnetic Antenna 44 2.7.3. GPS Optical Antenna 45 2.7.4. Interconnection Cables 46

2.7.4.1. LMR Cables 46 2.7.4.2. Optical Fiber Cables 46

3. INSTALLATION 47 3.1. Unpacking and Inspection 47 3.2. Working Conditions 47 3.3. Tools required 47 3.4. GPS Antenna Installation 48

3.4.1. Roof Antenna Installation 49 3.4.2. GPS Antenna and Lightning Protection Assembly 50 3.4.3. Optical Fiber Antenna Installations 52

3.5. Power supplies 54 3.6. Power-Up 55

3.6.1. "POWER 1" and "POWER 2" Connectors 56 3.6.1.1. DC Supplies 56 3.6.1.2. AC Supplies 56

3.7. Commissioning of the GPS-I modules 57 3.8. Connecting the Input References 58

3.8.1. INHIBIT Function 58 3.8.1.1. "INH1-2", "INH3-4" and "INH5-6" Connectors 58 3.8.1.2. Input Connections 59

3.9. Connecting the output signals 60 3.9.1. Output Connections 60 3.9.2. Output Connectors for symmetrical (balanced) outputs 61

3.9.2.1. Sub-D Output Connectors 61 3.9.2.2. BNO Output Connectors 61

3.10. Connecting an Output Expansion Unit 62 3.10.1. "Expansion Port" Connector 63 3.10.2. "SSM1" and "SSM2" Connectors 63

4. CONFIGURING THE UNIT 64 4.1. Factory default parameters 64 4.2. Configuring Procedure if the unit is equipped with an ESM 65 4.3. Configuring procedure if the unit is not equipped with an ESM 66

4.3.1. "RS-232C" Connector (local management port, without ESM) 66 4.3.2. Configuring the ILS's Modules 67 4.3.3. Configuring the Tracking Oscillator Modules (TOM) 68

5. REMOTE OPERATIONS 69 5.1. Electrical Alarm Outputs 70

5.1.1. "ALARM OUTPUTS" Connector 71 5.1.1.1. Pin-out (with Alarms module 'MAC-R') 71 5.1.1.2. Pin-out (with Alarms module 'MAC 2-R') 71

5.1.2. "STATUS" Connector 72 5.2. Network/Local Management Capabilities if the unit is equipped with an ESM 73

5.2.1. Connecting to the Local Manager (LM) 74 5.2.2. Connecting to a SyncView™ Remote Manager 74

5.3. Local Management Capabilities if the unit is not equipped with an ESM 75 5.3.1. "RS-232C" Connector (local management port, without ESM) 75 5.3.2. Operations 76 5.3.3. Internal Configuration (managed by the MAC Alarms Module A15) 77

6. COMMISSIONING PROCEDURES 78 6.1. Checking the redundancy of the Power Converter modules 78


6.2. Commissioning the GPS-I modules 79 6.3. Checking the Input Line Selectors 80 6.4. Checking channel redundancy 82

6.4.1. Manual procedure for checking channel redundancy 82 6.4.2. Remote procedure for checking channel redundancy 83

6.4.2.1. Procedure if the unit is not equipped with an ESM: 83 6.4.2.2. Procedure if the unit is equipped with an ESM: 84

6.5. Checking the Local Port of the MAC module (Unit without an ESM) 85 6.6. Checking the Local RS-232C Port of the ESM module 86

7. SPECIFICATIONS 87 7.1. Input Specification 87 7.2. Inputs Management 88 7.3. Channels Characteristics 89 7.4. Outputs Specifications 90 7.5. Remote Functions Specifications 92 7.6. General Specifications 93

8. MAINTENANCE 94

9. PREVENTIVE MAINTENANCE 95 9.1. Test of the signalling LEDs 96 9.2. Testing the redundant modules 97 9.3. Calibration of the oscillator 97

10. TROUBLESHOOTING 98 10.1. Description of the LEDs/Faults diagnostic 99

10.1.1. Input Interface Unit "IIU 2.048 Mbit/s G703-6" 99 10.1.2. Input Line Selector 'ILS' 100 10.1.3. Output Interface Modules "OIU 16 Outputs ……" 101 10.1.4. Management and Alarms Controller "MAC" 102 10.1.5. Power Supply Unit "PSU" 103 10.1.6. Tracking Oscillator Module 'TOM' 104 10.1.7. Oscillator Module 'OM' 105 10.1.8. Phase-Stepper Switch 'PSS' 106 10.1.9. Embedded System Manager "ESM" 107

11. WARRANTY 108

12. DEFINITION OF TERMS AND SYMBOLS 109

13. DOCUMENT HISTORY 110


1. Introduction This manual provides basic and detailed technical information for the correct operation of the OSA 5548B SASE. It describes the hardware itself, summarises the overall equipment concept and theory of operation and provides information related to operation and maintenance.

1.1. Documentation Structure The manual is divided into two main parts: - OPERATING (this portion) - TECHNICAL (located at the end of this manual)

1.1.1. Operating Portion The Operating portion provides information on the overall equipment. I also includes general specifications, installation, operation, fault finding and maintenance.

1.1.2. Technical Portion The Technical portion provides detailed information on all plug-in modules which can be fitted into the OSA 5548B SASE. The specifications, detailed description of operation, maintenance, adjustment procedures and circuit diagrams are also included.

1.2. Optional expansion/upgrades In order to minimise documentation changes, the drawings contained in this manual show the equipment’s full configuration. Therefore, when module upgrades are made at a later date, the user will already have all the necessary documentation.

1.3. Addendum Always check if there is an addendum at the beginning of the manuals and read it before proceeding with the main part of the manual. The addendum will highlight any departure of the hardware from the descriptive text or drawings and give additional technical data which was not available when the original manual was compiled.

1.4. Certification All modules are tested according to well-defined procedures. Appropriate testing and inspection also takes place at the component, board, equipment and system levels. Oscilloquartz’s is certified to ISO 9001. Oscilloquartz is also certified by the Swiss Office of Metrology as an accredited laboratory for time and frequency. The company maintains in-house cesium standards that are compared continuously to UTC. Before any equipment is released, it must satisfy the relevant tests and inspection schedules. The equipment is then issued with a "Certificate of Conformance" that guarantees its conformance with the relevant performance criteria.


2. General Description

2.1. Functions of the OSA 5548B SASE The Oscilloquartz Stand Alone Synchronisation Equipment (SASE) model OSA 5548B is specifically designed for use in Plesiochronous Digital Hierarchy (PDH), Synchronous Digital Hierarchy (SDH), and Synchronous Optical Network (SONET) networks. It performs the following functions :

• Accept up to six external synchronisation reference inputs.

• Monitor simultaneously the status and quality of all six synchronisation inputs, with continuous phase measurement.

• Monitor simultaneously the Synchronisation Status Message (SSM) on the 2 Mbit/s synchronisation input signals. Please see Note 1.

• Select the best or the operator preferred synchronisation input.

• Select the next best or the next preferred synchronisation input if the selected synchronisation input has failed or fallen in quality.

• Attenuate the jitter and wander on the selected synchronisation input.

• Operate as a high quality standby reference clock if all the synchronisation inputs have failed or fallen in quality (hold-over mode).

• Provide up to 112 synchronisation outputs, that are referenced to the selected synchronisation input (1+1 protected synchronisation outputs capabilities).

• Re-timing of up to 56 traffic signals (E1/T1) with reference to the selected sync input. Please see note 2.

• Supply 1+1 protected outputs to the Synchronisation Distribution Units (SDU), e.g. OSA 5530B SDU,

• Generate the appropriate SSM on the 2 Mbit/s synchronisation outputs. Please see Note 1

• Communicate with a local terminal and a SyncView™ central management system for alarm reporting and control functions

Note 1: SSM operation is available from release 2.1.

Note 2: Retiming operation is available from release 2.2.


2.2. System description All the plug-in units of the OSA 5548B SASE are replaceable in a hot condition, i.e. when the equipment is powered up and in use. The passive splitters and combiners are permanently fixed to the backplane for maximum security.

2.2.1. Functional block diagram of the OSA 5548B SASE

MONITORING and ALARMS CONTROLLER (MAC-R)

OPTIONAL EMBEDDED SYSTEM MANAGER (ESM)

POWERSUPPLY(PSU) 1

POWERSUPPLY(PSU) 2

ALARM &CONTROL

ALARM &CONTROL

16 UNPRO-TECTEDSYNCOUTPUTS

16 UNPRO-TECTEDSYNCOUTPUTS

16 PRO-TECTEDSYNCOUTPUTS

OUTPUTSTO SDU

OUTPUTINTERFACE

UNIT(OIU)PHASE

STEPPERSWITCH

(PSS)CHANNEL

1

PHASESTEPPERSWITCH

(PSS)CHANNEL

2

SYNCINPUT

1

o

o

o

o

o

SYN INPUT

6

OSCILLATORMODULE

CHANNEL 1

OSCILLATORMODULE

CHANNEL 2

INPUTLINE

SELECTOR(ILS)

CHANNEL 1

INPUTLINE

SELECTOR(ILS)

CHANNEL 2

INPUTINTERFACE

UNIT(IIU) 1

INPUTINTERFACE

UNIT(IIU) 6

o

o

TRACKINGOSCILLATOR

MODULE(TOM)

CHANNEL 1

TRACKINGOSCILLATOR

MODULE(TOM)

CHANNEL 2

PASSIVECOMBINERCHANNEL

1

PASSIVECOMBINERCHANNEL

2

POWERFEED

TOUNITS

OUTPUTINTERFACE

UNIT(OIU)

OUTPUTINTERFACE

UNIT(OIU)

OUTPUTINTERFACE

UNIT(OIU)

POWERINPUT

1

POWERINPUT

2

o

o

PASSIVECOMBINERSPLITTERS

The wiring between the OIUs and the output connectors is available in four versions:

I) 96 unprotected and 16 1+1 protected synchronisation outputs. (OIU pair 7&8 are internally wired together)

II) 64 unprotected and 32 1+1 protected synchronisation outputs. (OIU pairs 5&6 and 7&8 are internally wired together)

III) 32 unprotected and 48 1+1 protected synchronisation outputs. (OIU pairs 3&4, 5&6 and 7&8 are internally wired together)

IV) 64 1+1 protected synchronisation outputs. (OIU pairs 1&2, 3&4, 5&6 and 7&8 are internally wired together)


2.2.2. Functional description

2.2.2.1. Input Interface Units (IIU) The OSA 5548B SASE can be equipped with up to six Input Interface Units (IIUs). The IIUs provide the required interfaces to the external synchronisation references. The IIUs have dual outputs which are cross-fed to redundant Input Line Selector (ILS) modules.

2.2.2.2. Input Line Selectors (ILS) The function of the ILS is to select one of the IIU outputs and to forward the selected signal to the two TOM modules. Thus, the ILS effectively selects one of the input references. The ILSs can operate in several selection modes:

AUTOMATIC: the input is selected automatically by the ILS according to a priority table.

MANUAL: the input is selected manually by the user and remains selected as long as the input is valid

FORCED: the input is selected manually by the user and remains selected no matter whether the input is valid or not.

The ILSs operate in a 1+1 protected mode (i.e. warm standby). The outputs from ILS channel 1 and ILS channel 2 are joined together using passive combiners . Normally, the output from ILS channel 1 is active and the output from ILS channel 2 is inactive. If ILS channel 1 has failed or is removed, then ILS channel 2 automatically resumes operation. Switch-over between ILS channel 1 and channel 2 has a negligible effect on the synchronisation outputs of the OSA 5548B SASE.

2.2.2.3. Tracking Oscillator and Oscillator Modules The outputs of the ILSs (through passive combiners) are fed to the Tracking Oscillator Modules (TOM), channels 1 & 2 respectively.

The TOM contains a phase comparator and frequency dividers. It forms a Digital Phase Locked Loop (D-PLL) with the Ovenised Crystal Quartz Oscillator (OCXO). The TOM dynamically adjusts the output phase and frequency of the oscillator to follow the phase and frequency of the selected synchronisation input. However, since the loop time constant (τLOOP) of the D-PLL is very large, the jitter present on the synchronisation input is attenuated. Additionally, the D-PLL will not lock onto an input that exceeds the maximum allowable phase and frequency tolerances. If all the synchronisation inputs are bad, then the OCXO enters hold-over mode (frequency memorised to the previously good synchronisation input).

The OSA 5548B SASE can be equipped with either dual Oven Controlled Crystal Oscillator (OCXO) modules or dual 'Boîtier Vieillissement Amélioré' (BVA) oscillator modules. Both types of oscillators exceed the requirements of ITU-T G.812 Transit Node Clock (TNC), ITU-T G.812 Local Node Clock (LNC), ITU-T G.812 type I and type III clocks, and ETSI 300 462-4 slave clock. The BVA oscillator fully meets the ITU-U type II clock specification.


2.2.2.4. Phase-Stepper Switches The outputs of oscillator modules 1 & 2 are fed to the Phase Stepper Switches (PSSs) in channels 1 & 2, respectively.

The PSS contains a phase comparator, a precision phase adjustment circuit and a fast electronic switch. The standby PSS measures the phase difference between its output and the output from the working PSS, and then adjusts its output to phase align with the output of the working PSS. Normally, only the output of the working channel PSS is active and the output of the standby PSS is inactive. If either the TOM, oscillator module, or working PSS has failed or is removed, then the standby PSS would assume operation. The switch-over between PSSs has a negligible effect on the synchronisation outputs of the OSA 5548B SASE.

2.2.2.5. Output Interface Units (OIU) The outputs from PSS channels 1 & 2 are joined together by a passive combiner, and the signal is then fanned out by a number of passive splitters. Each splitter output feeds an Output Interface Unit (OIU). Two of the splitter outputs are used to drive an optional SDU, and another splitter output is fed back to the IIUs as an internal reference signal for the measurement of TIE.

The OSA 5548B SASE can be equipped with up to eight OIUs. The OIUs provide the required interfaces to the external systems. There is a number of OIU types that can be fitted in the OSA 5548B SASE.

Some OIU pairs are internally connected together to provide 1+1 protected outputs, as required for the different versions of output wiring.

Different output connector types are available. Output impedance is either 75 Ohm unbalanced or 120 Ohm balanced. Output connector type and output impedance are determined by field-exchangeable Output Connector Tiles.


2.2.2.6. Re-Timing Units (RTU) A Re-Timing Unit (RTU) synchronises a traffic signal based upon the synchronisation signal from the OSA 5548B SASE. Each channel in the RTU has a re-timing buffer holding two traffic frames. Each RTU provides re-timing of up to 8 channels.

Output connector type and output impedance are determined by field-exchangeable Output Connector Tiles (RTU cards require specially designed connector tiles, including by-pass relays). Different output connector types are available. Output impedance is either 75 Ohm unbalanced or 100/120 Ohm balanced.

The RTU takes up one of the slots utilised for an Output Interface Unit.

RETIMINGFUNCTION

BYPASSRELAYS

RETIMINGFUNCTION

RETIMINGFUNCTION

RETIMINGFUNCTION

RETIMINGFUNCTION

RETIMINGFUNCTION

RETIMINGFUNCTION

RETIMINGFUNCTION

MICRO-CONTR.

CONNECTOR TILERETIMING UNIT RTU

BYPASS CONTROL

CONNECTORS

TRAFFIC INPUT

TRAFFIC OUTPUT

SYNC.INPUT

TRAFFIC INPUT

TRAFFIC OUTPUT

TRAFFIC INPUT

TRAFFIC INPUT

TRAFFIC INPUT

TRAFFIC INPUT

TRAFFIC INPUT

TRAFFIC INPUT

TRAFFIC OUTPUT

TRAFFIC OUTPUT

TRAFFIC OUTPUT

TRAFFIC OUTPUT

TRAFFIC OUTPUT

TRAFFIC OUTPUT

Block diagram of the Re-Timing Unit.

If the re-timing buffer overflows, controlled slips are applied to the traffic signals. Slips caused in the internal buffer can be monitored using a customer-configured via the Local Manager or the SyncView Management software. Via the management system, the operator has the possibility to set thresholds for when (in terms of slips per time unit) alarms shall be rose.

Important: For maximum security, the traffic signals are passed through to ensure that traffic is not lost due to RTU card removal, card fault or loss of power in the equipment. This is ensured by the by-pass relays in the RTU connector tile set.


2.2.2.7. Monitoring & Alarms Controller (MAC) & Embedded System Manager (ESM) The Monitoring and Alarms Controller (MAC) concentrates the alarms from all modules within the OSA 5548B SASE. It provides front panel LED indications, relay contacts alarm outputs for in-station monitoring, and an RS-232C interface for external control using a local terminal.

The OSA 5548B SASE can be fitted with an optional Embedded System Manager (ESM) to provide comprehensive management features : gateway to SyncView™ (Oscilloquartz’s management system), enhanced synchronisation input measurement; and other functions. There are three ESM versions to provide X.25, ISDN or Ethernet Local Area Network (LAN) interface to SyncView™. Failure or removal of the MAC or ESM would only freeze the functions provided by these units. The performance of the synchronisation outputs is unaffected. i.e. all the selected synchronisation outputs would still be active, with the same quality as before.

2.2.2.8. Power Supply Units (PSU) The Power Supply Units (PSU) 1 & 2 operate in a 1+1 protected mode. Failure or removal of a PSU has no effect on the synchronisation outputs of the OSA 5548B.


2.3. Equipment Overview

The basic frame is a 6U high 19” subrack, with rear facing connectors.


2.4. Front Panel layout / Equipment configuration:

Position Designation Function A1 to A6 Input Interface Units 'IIU' Condition the external reference signals (up to 6) and

forward them to the ILS modules. GPS Receivers can also be used as input interfaces (up to 2).

A7 to A14 Output Interface Units 'OIU' Provide the required user outputs and are driven by the 'active' Channel.

A15 Monitoring and Alarms Controller 'MAC'

Centralises all the alarms produced by the other modules in the chassis.

A16, A17 Power Supply Units 'PSU' Convert the voltage of the external power supply to the internal voltage. In order to ensure the required reliability, the two PSU work in a redundant fashion (primary and secondary).

A18, A19 Input Line Selectors 'ILS' Selects one of the available inputs based on different criteria and forwards it to both TOM modules for synchronisation purposes.

A20, A25 Tracking Oscillator Modules 'TOM'

Digital PLL Filter used to lock the associated oscillator module to the selected input reference (TOM A20 → OM A21, TOM A25 → OM A24)

A21, A24 Oscillator Modules 'OM' The heart of the equipment, these modules are normally locked to the selected input reference by means of the associated TOM and provide highly stable outputs in holdover mode. (OM A21 → TOM A20, OM A24 → TOM A25)

A22, A23 Phase-Stepper Switches 'PSS' Provide phase coherence and automatic selection of the best between the two signals generated by the two Oscillator Modules.

A26 Embedded System Manager 'ESM'

Interface to the management system SyncView™ (X.25, ISDN or Ethernet), storage of measurement data and many other functions.


2.4.1. Module Compatibility Cross-Reference Table, 5548B release 2.0: This section lists the full complement of OSA 5548B r2.0 SASE modules and the relevant positions where they can be inserted. All unused slots must be equipped with the appropriate dummy load cards.

Slots [A...]

Module Description Tech. Ref. OrderRef.

1&2

3&4

5&6

7↓14

15

16 & 17

18 & 19

20 & 25

21 & 24

22&23 26

IIU Line Receiver 942 085 075.01 A005939 X X X IIU 2.048 Mbit/s G703-6 942 085 068 A005934 X X X IIU 1.544 Mbit/s G703-2 942 085 066 A011439 X X X GPS Input Interface 'GPS-I', std ant. 942 082 085.22 A005870 X X GPS Input Interface 'GPS-I', down ant. 942 082 085.21 A005869 X X GPS Input Interface 'GPS-IM', std. ant. 942 082 086.02 A005872 X X GPS Input Interface 'GPS-IM', down ant. 942 082 086.01 A005871 X X GPS Input Interface 'GPS-I2' 942 082 087 A012741 X X Dummy Load for ‘IIUs‘ 942 085 940 A006108 X X X OIU 16 Outputs 2.048 MHz G703-10 942 085 191 A005994 X OIU 16 Outputs 2.048 Mbit/s G703-6 942 085 190 A005992 X OIU 16 Outputs 1.544 Mbit/s G703-2 942 085 192 A011440 X OIU 16 Outputs 64 bit/s Composite Clock 942 085 193 A011489 X OIU 16 Outputs 5MHz (Synthesised) 942 085 197.40 A005997 X OIU 16 Outputs 10 MHz (Synthesised) 942 085 198.40 A011285 X Dummy Load for ‘OIUs‘ 942 085 944 A006112 X MAC-R Alarms Module (model 1) 942 085 537.004 A011367 X MAC-R Alarms Module (model 2) 942 085 534.004 A011375 X MAC 2-R Alarms Module 942 085 528.025 A011519 X PSU-DC (36 to 72 VDC input variant) 942 081 030.03 A005841 X PSU-AC (196 to 264 VAC input variant) 942 081 031.03 A011339 X PSU-AC (98 to 132 VAC input variant) 942 081 032.03 A011631 X Input Line Selector 'ILS' 942 085 253.11 A006010 X Tracking Oscillator Module 'TOM' 942 082 065 A005858 X Oscillator Module 'OM' (BVA 8695) 942 082 070.01 A005859 X Oscillator Module 'OM' (OCXO 8665) 942 082 071.01 A005861 X Oscillator Module 'OM' (OCXO 8665-G) 942 082 071.21 A012585 X Oscillator Module 'OM' (with BVA 8607) 942 082 072.01 A011813 X Oscillator Module 'OM' (with BVA 8600) 942 082 072.11 A012138 X Oscillator Module 'OM' (with Rubidium) 942 082 073.01 A005862 X Phase-Stepper Switch 'PSS' Module 942 085 230.02 A006007 X ESM (X25) 942 081 082 A005842* XESM (X25) 942 081 082.03 A012672* XESM (ISDN) 942 081 083 A011556* XESM (Ethernet) 942 081 085 A005844* XESM (Ethernet) 942 081 085.02 A011815* XESM (Ethernet) 942 081 085.03 A012674* XDummy Load for ‘ESM‘ 942 085 943 A006111 X

(*): Soft. rev. ≥1.2 ( ≥2.1 with GPS-I2) "X": Compatible slot



Slots [A...]


1&2

3&4

5&6

7↓14

15

16 & 17

18 & 19

20 & 25

21 & 24

22&23 26

IIU Line Receiver 942 085 075.01 A012712 X X X IIU 2.048 Mbit/s G703-6 942 085 068 A012711 X X X IIU 1.544 Mbit/s G703-2 942 085 066 A012710 X X X GPS Input Interface 'GPS-IM', std 942 082 086.02 A005872 X X GPS Input Interface 'GPS-IM', down conv. 942 082 086.01 A005871 X X GPS Input Interface 'GPS-I2' 942 082 087 A012741 X X Dummy Load for ‘IIUs‘ 942 085 940 A006108 X X X OIU 16 Outputs 2.048 MHz G703-10 942 085 191 A012678 X OIU 16 Outputs 2.048 Mbit/s G703-6 942 085 190 A012745 X OIU 16 Outputs 1.544 Mbit/s G703-2 942 085 192 A012744 X OIU 16 Outputs 64 bit/s Composite Clock 942 085 193 A012743 X OIU 16 Outputs 5MHz (Synthesised) 942 085 197.40 A012746 X OIU 16 Outputs 10 MHz (Synthesised) 942 085 198.40 A012747 X Dummy Load for ‘OIUs‘ 942 085 944 A006112 X MAC 2-R Alarms Module 942 085 528.025 A012748 X PSU-DC (36 to 72 VDC input variant) 942 081 030.03 A005841 X PSU-AC (196 to 264 VAC input variant) 942 081 031.03 A011339 X PSU-AC (98 to 132 VAC input variant) 942 081 032.03 A011631 X Input Line Selector 'ILS' 942 085 253.11 A012713 X Tracking Oscillator Module 'TOM' 942 082 065 A005858 X Oscillator Module 'OM' (BVA 8695) 942 082 070.01 A005859 X Oscillator Module 'OM' (OCXO 8665) 942 082 071.01 A005861 X Oscillator Module 'OM' (OCXO 8665-G) 942 082 071.21 A012585 X Oscillator Module 'OM' (with BVA 8607) 942 082 072.01 A011813 X Oscillator Module 'OM' (with BVA 8600) 942 082 072.11 A012138 X Oscillator Module 'OM' (with Rubidium) 942 082 073.01 A005862 X Phase-Stepper Switch 'PSS' Module 942 085 230.02 A006007 X ESM (X25) 942 081 082 A005842* XESM (X25) 942 081 082.03 A012672* XESM (Ethernet) 942 081 085 A005844* XESM (Ethernet) 942 081 085.02 A011815* XESM (Ethernet) 942 081 085.03 A012674* XDummy Load for ‘ESM‘ 942 085 943 A006111 X

(*): Soft. rev. ≥1.3 ( ≥2.1 with GPS-I2) "X": Compatible slot



Slots [A...]


1&2

3&4

5&6

7↓14

15

16 & 17

18 & 19

20 & 25

21 & 24

22&23 26

IIU Line Receiver 942 085 075.01 A012717 X X X IIU 2.048 Mbit/s G703-6 942 085 068 A012716 X X X IIU 1.544 Mbit/s G703-2 942 085 066 A012715 X X X GPS Input Interface 'GPS-IM', std 942 082 086.02 A005872 X X GPS Input Interface 'GPS-IM', down conv. 942 082 086.01 A005871 X X GPS Input Interface 'GPS-I2' 942 082 087 A012741 X X Dummy Load for ‘IIUs‘ 942 085 940 A006108 X X X OIU 16 Outputs 2.048 MHz G703-10 942 085 191 A012752 X OIU 16 Outputs 2.048 Mbit/s G703-6 942 085 190 A012751 X OIU 16 Outputs 1.544 Mbit/s G703-2 942 085 192 A012750 X OIU 16 Outputs 64 bit/s Composite Clock 942 085 193 A012749 X OIU 16 Outputs 5MHz (Synthesised) 942 085 197.40 A012753 X OIU 16 Outputs 10 MHz (Synthesised) 942 085 198.40 A012754 X RTU-E1 2.048 Mbit/s 942.085.042.81 A012314 X RTU-T1 1.544 Mbit/s 942 085 041.82 A011853 X Dummy Load for ‘OIUs‘ 942 085 944 A006112 X MAC 2-R Alarms Module 942 085 528.025 A012755 X PSU-DC (36 to 72 VDC input variant) 942 081 030.03 A005841 X PSU-AC (196 to 264 VAC input variant) 942 081 031.03 A011339 X PSU-AC (98 to 132 VAC input variant) 942 081 032.03 A011631 X Input Line Selector 'ILS' 942 085 253.11 A012719 X Tracking Oscillator Module 'TOM' 942 082 065 A012721 X Oscillator Module 'OM' (BVA 8695) 942 082 070.01 A005859 X Oscillator Module 'OM' (OCXO 8665) 942 082 071.01 A005861 X Oscillator Module 'OM' (OCXO 8665-G) 942 082 071.21 A012585 X Oscillator Module 'OM' (with BVA 8607) 942 082 072.01 A011813 X Oscillator Module 'OM' (with BVA 8600) 942 082 072.11 A012138 X Oscillator Module 'OM' (with Rubidium) 942 082 073.01 A005862 X Phase-Stepper Switch 'PSS' Module 942 085 230.02 A006007 X ESM (X25) 942 081 082.03 A012672* XESM (Ethernet) 942 081 085.02 A011815* XESM (Ethernet) 942 081 085.03 A012674* XDummy Load for ‘ESM‘ 942 085 943 A006111 X

(*): Soft. rev. ≥2.1 "X": Compatible slot


2.5. Connectors Panel layout: 2.5.1. Connectors panel layout (except Outputs Groups)

Connector Type Description Processed by Comments IN1 BNC 75Ω, female Input Reference 1 IIU A1 Depends on IIU type fitted IN2 BNC 75Ω, female Input Reference 2 IIU A2 Depends on IIU type fitted IN3 BNC 75Ω, female Input Reference 3 or GPS Antenna Input

(GPS A3/A4) IIU A3 Depends on IIU type fitted

IN4 BNC 75Ω, female Input Reference 4 IIU A4 Depends on IIU type fitted IRIGB-A3 BNC 75Ω, female IRIG B Output GPS-I A3/A4 Only with GPS-I fitted in A3/A4

Not available with GPS-I2 1PPS-A3 BNC 75Ω, female 1PPS Output GPS-I A3/A4 Only with GPS-I fitted in A3/A4

IN5 BNC 75Ω, female Input Reference 5 or GPS Antenna Input (GPS A5/A6)

IIU A5 Depends on IIU type fitted

IN6 BNC 75Ω, female Input Reference 6 IIU A6 Depends on IIU type fitted IRIGB-A5 BNC 75Ω, female IRIG B Output GPS-I A5/A6 Only with GPS-I fitted in A3/A4

Not available with GPS-I2 1PPS-A5 BNC 75Ω, female 1PPS Output GPS-I A5/A6 Only with GPS-I fitted in A5/A6 INH 1-2 Sub-D 9p, female Inhibit Inputs for Inputs 1 and 2, TTL IIU's A1&A2 INH 3-4 Sub-D 9p, female Inhibit Inputs for Inputs 3 and 4, TTL IIU's A3&A4 INH 5-6 Sub-D 9p, female Inhibit Inputs for Inputs 5 and 6, TTL IIU's A5&A6

Management Port Sub-D 25p, male Network Management port ESM A26 X25, ISDN or Ethernet port SSM1 Lemo 3p SSM Bus 1 ILS's A18&A19 Used to transmit SSM information

to other shelf SSM2 Lemo 3p SSM Bus 2 ILS's A18&A19 Used to transmit SSM information

to other shelf Exp. Outputs

1 and 2 BNC 50Ω, female 2.048 MHz Exp. Outputs, 0.5 Vrms, 50Ω PSS's A22&A23 Expansion Shelf Outputs

Expansion Port Sub-D 9p, male Expansion port MAC A15 Manufacturer’s Bus (Used between OSA products)

Alarm Outputs Sub-D 25p, male Electrical Alarm Outputs (Main Alarm Outputs) MAC A15 Relay Outputs RS-232C Sub-D 9p, male RS-232C Local port MAC A15 Only if ESM is not fitted

Status Sub-D 25p, male Electrical Alarms/Status Outputs (Auxiliary Information provided by the ESM module)

ESM A26 Relay Outputs

Power 1 * Power Input 1 PSU A17 Power supply input 1 Power 2 * Power Input 2 PSU A16 Power supply input 2

(*): DC input: Cannon MS-3102A 145-5P AC input: CEE 22/VI, IEC 320/VI, DIN49457/1, SEV typ113, SNV 24573 or compatible type.

Location of Power connectors 1&2


2.5.2. Connectors panel layout (Outputs Groups only)

Connector Type Description Processed by

Comments

16x Unprotected User Outputs OIU A7 Depends on OIU type fitted. Outputs Group 1

Connector Tile Set (see table below) or

16x Protected (1+1) User Outputs (1) OIU's A7&A8 (2) Depends on OIU's type fitted. Outputs Group

2 Connector Tile Set (see table below)

16x Unprotected User Outputs Not available if the Outputs Group 1 is fitted with Protected philosophy.

OIU A8 Depends on OIU type fitted.

16x Unprotected User Outputs OIU A9 Depends on OIU type fitted Outputs Group 3


16x Protected (1+1) User Outputs (1) OIU's A9&A10 (2) Depends on OIU's type fitted Outputs Group



OIU A10 Depends on OIU type fitted

16x Unprotected User Outputs OIU A11 Depends on OIU type fitted Outputs Group 5


16x Protected (1+1) User Outputs (1) OIU's A11&A12 (2) Depends on OIU's type fitted Outputs Group



OIU A12 Depends on OIU type fitted

Outputs Group 7

Connector Tile Set (see table below)

16x Protected (1+1) User Outputs (1) OIU's A13&A14 (2) Depends on OIU's type fitted

Note 1: Outputs Group(s) fitted with Protected philosophy is (are) indicated by a label 'Protected'. Note 2: Protected Outputs Group requires same type of OIUs into the associated slots.

OIU Connector Tile Set Tech. Ref. Order Ref. 16 x 75 Ohm, BNC, female 942.089.205.75 A006155 16 x 75 Ohm, BT43, female 942.089.203 A006152 16 x 50 Ohm, BNC, female 942.089.205.50 A006154 16 x 75 Ohm, CEI 1.0/2.3, female 942.089.206 A011586 16 x 75 Ohm, CEI 1.6/5.6, female 942.089.207 A011569 16 x Balanced (120 Ω typ.), Sub-D 9p, female 942.089.202 A006151 16 x 133 Ohm c/c, BNO* 942.089.209.12 A011490 16 x Balanced (120 Ω typ.), BNO* 942.089.209.11 A011476 16 x Balanced (120 Ω typ.), Lemo 3p 942.089.227 A011825 4x Dummy Tile 942.089.208 A011374

RTU Connector Tile Set (Input / Output)

Tech. Ref. Order Ref.

8 x 75 Ohm, BNC, female (Unbalanced, for RTU-E1) 942.089.218.75 A011656 8 x 120 Ohm, Sub-D 9p, female (Balanced, for RTU-E1) 942.089.219.12 A012203 8 x 100 Ohm, Sub-D 9p, female (Balanced, for RTU-T1) 942.089.219.10 A012263 8 x 120 Ohm, BNO* ( Balanced, for RTU-E1) 942.089.236.12 A012569 8 x 100 Ohm, BNO* ( Balanced, for RTU-T1) 942.089.236.10 A012568

*: Suhner Type

Location of Power connectors

1&2


2.6. Plug-in modules

2.6.1. Input Interface Unit "IIU Line Receiver with Measurement" [Option for slots A1 to A6] Each "IIU Line Receiver with Measurement" terminates a reference line, conditions the reference signal and forwards it to the two ILS modules. This IIU accepts and automatically converts to 2.048 MHz, any of the following frequencies (automatic detection): 64 kHz, 1.0 MHz, 1.544 MHz, 2.048 MHz, 5.0 MHz and 10.0 MHz. It also monitors the reference signal and transmits an alarm signal to the MAC module, when the signal level is out of specification or when the IIU module has a failure. The "IIU Line Receiver with Phase Measurement" also measures the TIE of the input signal relative to the output of the OSA 5548B SASE's active internal oscillator. The measured TIE values are transmitted to the ESM module for further processing.

Ordering Information

Description Tech. Ref. Order Ref. Release

compatibilityA005939 2.0 A012712 2.1 IIU Line Receiver, 75Ω* input,

with measurements capability 942 085 075.01 A012717 2.2

*: 120Ω Input through external 120/75Ω impedance matching adaptator.

Text

LED Colour

Indication

OP Green When on, it indicates that the module is operational and that it delivers reference signals to the ILS modules.

REF Red When on, it indicates loss of signal or the signal is not valid.

OOL Red When on, indicates a fault condition in the local PLL

INH Red

When on, it indicates that the input has been disabled by one of the inhibit input signals.

OP

REF

OOL

INH

L.R.

IIU-10/M


2.6.2. Input Interface Unit "IIU 2.048 Mbit/s G.703-6 with Measurement" [Option for slots A1 to A6] Each "IIU 2.048 Mbit/s G.703-6 with Measurement" terminates a G.703-6 reference line, conditions the reference signal and forwards it to the two ILS modules. It extracts the clock signal and detects AIS alarms. It can also extract other information from the HDB3 signal, such as FA and ER alarms. Furthermore it is possible to detect the states of bits 4, 5, 6, 7 and 8 in time slot 0. This IIU also monitors the reference signal and transmits an alarm signal to the MAC module, when the signal level is out of specification or when the IIU module has a failure. The module also measures the TIE of the input signal relative to the output of the OSA 5548B SASE's active internal oscillator. The measured TIE values are transmitted to the ESM module for further processing.

Depending on the module configuration, some of the above-mentioned alarms may be inactive.

Ordering Information Description Tech. Ref. Order Ref.

Release compatibility

A005934 2.0 A012711 2.1 IIU 2.048 Mbit/s G703-6/75Ω*,

with measurements capability 942 085 068 A012716 2.2


Text

LED

Colour

Indication


LOS Red When on, it indicates loss of signal or the signal is not valid.

AIS Red When on, it indicates that an AIS (Alarm Indication Signal) alarm was detected.

LFA Red When on, indicates the detection of an error in the synchronisation frame or a CRC-4 error, provided this criteria is active.

ER Red When on, indicates an excessive error rate on one of the following parameters: - Word error in the alignment time slot - Synchronisation error (CRC-4) - BPV or CV error

SSM /BIT

Red 1) When on in SSM mode, indicates that the ILS has rejected the reference on a SSM criteria. 2) When on in NORMAL mode, indicates an alarm condition based on the state of one or several of the bits Sa4 to Sa8.

BIT 4 BIT 5 BIT 6 BIT 7 BIT 8

Yellow When on, indicates that the bits Sa4, Sa5, Sa6, Sa7, Sa8 (national bits in time slot 0) are 'high' (logic 1).

OP

BIT 4BIT 5BIT 6BIT 7BIT 8

IIU-6/M

F3G085...

ER

LOS

AIS

LFA

SSM /BIT

IIU-6/M


2.6.3. Input Interface Unit "IIU 1.544 Mbit/s G.703-2 with Measurement" [Option for slots A1 to A6] Each "IIU 1.544 Mbit/s G.703-2 with Measurement" terminates a G.703-2 reference line (through external 100/75Ω matching adaptator), conditions the reference signal and forwards it to the two ILS modules. It extracts the clock signal and detects AIS alarms. It can also extract other information from the signal, such as LFA, ER and RAI alarms. This IIU also monitors the reference signal and transmits an alarm signal to the MAC module, when the signal level is out of specification or when the IIU module has a failure. The module also measures the TIE of the input signal relative to the output of the OSA 5548B SASE's active internal oscillator. The measured TIE values are transmitted to the ESM module for further processing.

Depending on the module configuration, some of the above-mentioned alarms may be inactive.



A011439 2.0 A012710 2.1 IIU 1.544 Mbit/s G703-2/75Ω*,



Text

LED

Colour

Indication


LOS Red When on, it indicates loss of signal or the signal is not valid.

AIS Red When on, it indicates that an AIS (Blue Alarm) was detected.

LFA Red When on, indicates the detection of an error in the synchronisation frame.

ER Red When on, indicates an excessive error rate on FS or FT bit.

RAI Red When on, it indicates that an RAI (Yellow Alarm) was detected.

OP

IIU-2/M

ER

LOS

AIS

LFA

RAI


2.6.4. GPS Input Interface "GPS-I" [Option for slots A3/A4 and A5/A6] The GPS-I is a GPS receiver which provides an accurate frequency derived from the Coarse Acquisition Link 1 signals transmitted by the Navstar Global Positioning System (GPS) satellites. The GPS-I acts as an input interface. Its 2.048 MHz output signal feeds the two ILS modules of the equipment. An OSA 5548B SASE can take up to two GPS-I modules. Each GPS-I takes two input interface slots. An RS-232C port on the front panel of the module is provided for managing the GPS-I module with a terminal emulator.



GPS-I / Down Converter Antenna 942 082 085.21 A005869 GPS-I / Standard Antenna 942 082 085.22 A005870

2.0 only

Text

LED

Colour

Indication

AL Red When on, indicates that the module has a fault condition.

RS-232

AL

GPS

GPS-I


2.6.5. GPS Input Interface "GPS-I with Measurement " [Option for slots A3/A4 and A5/A6] The GPS-I is a GPS receiver which provides an accurate frequency derived from the Coarse Acquisition Link 1 signals transmitted by the Navstar Global Positioning System (GPS) satellites. The GPS-I acts as an input interface. Its 2.048 MHz output signal feeds the two ILS modules of the equipment. An OSA 5548B SASE can take up to two GPS-I modules. Each GPS-I takes two input interface slots. The module also measures the TIE of its output signal relative to the output of the OSA 5548B SASE's active internal oscillator. The measured TIE values are transmitted to the ESM module for further processing.



2.0 2.1 GPS-I / Down Converter Antenna,

with measurements capability 942 082 086.01 A005871 2.2 2.0 2.1 GPS-I / Standard Antenna,

with measurements capability 942 082 086.02 A005872 2.2

Text

LED

Colour

Indication

OP Green When on, indicates that the module is operating. Only then both output signals are available.

IN Red When on, indicates lacking signal from GPS.

GPS Red When on, indicates a failure in the GPS control loop.

INH Red When on, indicates that a digital input inhibits the GPS module


2.6.6. GPS Input Interface "GPS-I2 with Measurement " [Option for slots A3/A4 and A5/A6] The GPS-I2 is a GPS receiver which provides an accurate frequency derived from the Coarse Acquisition Link 1 signals transmitted by the Navstar Global Positioning System (GPS) satellites. The GPS-I2 acts as an input interface. Its 2.048 MHz output signal feeds the two ILS modules of the equipment. An OSA 5548B SASE can take up to two GPS-I2 modules. Each GPS-I2 takes two input interface slots. The module also measures the TIE of its output signal relative to the output of the OSA 5548B SASE's active internal oscillator. The measured TIE values are transmitted to the ESM module for further processing.



2.0 2.1 GPS-I2 / Standard Antenna,


Text

LED

Colour

Indication

OP Green When on, indicates that a reference signal is available at the output of the module.

AL Red When on, indicates that GPS or OCXO alarm is active.

GPS Red When on, indicates indicates lacking signal from GPS. When blinked, indicates that Antenna feed current is not correct (Opened or shorted)

OCXO Red When on, indicates that the internal oscillator is out of specification. When blinked, indicates that the System is in Pre-Tracked mode.

OP

AL

GPS

OCXO

GPS-I2 OSA942.082.087

Axxxxxx


2.6.7. Output Interface Module "OIU 16 Outputs 2.048 MHz G.703-10" [Option for slots A7 to A14] The "OIU 16 Outputs 2.048 MHz G.703-10" is one of the available options for the output interfaces of the OSA 5548B SASE. It receives its input signal from the selected channel and amplifies it in order to provide 16 timing signals according to ITU-T G.703-10.



A005994 2.0 A012678 2.1 OIU 16 Outputs 2.048 MHz G703-10 (*) 942 085 191 A012752 2.2

(*): 75Ω or 120Ω Outputs Impedance is defined by the type of the associated Outputs Group. Never used the 64kbit/s Outputs Group that is reserved for 64 kbit/s Output signals

Text

LED

Colour

Function

AL Red When on, indicates that the output signal is absent or out of specification (G.703-10)

AL

2.048MHz

OIU-10


2.6.8. Output Interface Module "OIU 16 Outputs 2.048 Mbit/s G.703-6" [Option for slots A7 to A14] The "OIU 16 Outputs 2.048 Mbit/s G.703-6" is one of the available options for the output interfaces of the OSA 5548B SASE. It receives its input signal from the selected channel and generates 16 timing signals according to ITU-T G.703-6. The signal is framed and consists exclusively of logic '1's.



A005992 2.0 A012745 2.1 OIU 16 Outputs 2.048 Mbit/s G703-6 (*) 942 085 190 A012751 2.2

(*): 75Ω or 120Ω Outputs Impedance is defined by the type of the associated Outputs Group. Never used the 64kbit/s Outputs Group that is reserved for 64 kbit/s Output signals

Text

LED

Colour

Indication


AL

C.G.

2048 Kbits/s

OIU-6


2.6.9. Output Interface Module "OIU 16 Outputs 1.544 Mbit/s G.703-2" [Option for slots A7 to A14] The "OIU 16 Outputs 1.544 Mbit/s G.703-2" is one of the available options for the output interfaces of the OSA 5548B SASE. It receives its input signal from the selected channel and generates 16 timing signals according to ITU-T G.703-2. The signal is framed and consists exclusively of logic '1's.



A011440 2.0 A012744 2.1 OIU 16 Outputs 1.544 Mbit/s G703-2/100Ω (*) 942 085 192 A012750 2.2

Text

LED

Colour

Indication


AL

C.G.

2048 Kbits/s

OIU-2


(*): Outputs Impedance is defined by the type of the associated Outputs Group. Must only be used with symetrical type Outputs Group. Never used the 64kbit/s Outputs Group that is reserved for 64 kbit/s Output signals


2.6.10.Output Interface Module "OIU 16 Outputs 64 kbit/s Composite Clock" [Option for slots A7 to A14] The "OIU 16 Outputs 64 kbit/s Composite Clock" is one of the available options for the output interfaces of the OSA 5548B SASE. It receives its input signal from the selected channel and generates 16 timing signals according to ‘64 kbit/s Composite Clock’ specifications. The signal is framed and consists exclusively of logic '1's.



A011489 2.0 A012743 2.1 OIU 16 Outputs 64 kbit/s Composite Clock, 133Ω

(*) 942 085 193 A012749 2.2

(*): Outputs Impedance is defined by the type of the associated Outputs Group. Must only be used with 64 kbit/s type Outputs Group.

Text

LED

Colour

Indication

AL Red When on, indicates that the output signal is absent or out of specification (64 kbit/s CC)

AL

C.G.

2048 Kbits/s

OIU-CC


2.6.11.Output Interface Module "OIU 16 Outputs Synthesised " [Option for slots A7 to A14] The 'OIU 16 Outputs Synthesised' is one of the available options for the output interfaces of the OSA 5548B SASE. It receives its input signal from the selected channel and synthesises/amplifies it in order to provide 16 outputs with one of the following frequencies: 5 MHz, 10 MHz or special frequencies - on request.

AL

f1 f2

xxxx MHz

Ordering Information

Description Tech. Ref. Order Ref. Release

compatibilityA005997 2.0 A012746 2.1 OIU 16 Outputs Synthesised 5 MHz, 1 Vrms (*) 942 085 197.40 A012753 2.2 A011285 2.0 A012747 2.1 OIU 16 Outputs Synthesised 10 MHz, 1 Vrms (*) 942 085 198.40 A012754 2.2

(*): Outputs Impedance is defined by the type of the associated Outputs Group. Never used the 64kbit/s Outputs Group that is reserved for 64 kbit/s Output signals

Text

LED

Colour

Indication

AL Red When on, indicates that the output signal is absent or out of specification.

OIU-....MHz


2.6.12.Re-timing Output Interface Module "RTU-E1 2.048 Mbit/s" [Option for slots A7 to A14] The ' RTU-E1 2.048 Mbit/s ' is one of the available options for the output interfaces of the OSA 5548B SASE. Each RTU re-times up to eight E1 traffic signals (2.048 Mbit/s) on the basis of the equipment's selected clock reference (issued from the selected channel).

ϕ

OP

AL

LINE

1

2

3

4

5

7

8

6

BYPASS

RTU-E1 OSA942.085.042.81

Axxxxxx



RTU-E1 2.048 Mbit/s (*) 942 085 042.81 A012314 2.2 (*): Outputs Impedance is defined by the type of the associated Outputs Group.

Must only be used with RTU-E1 type Outputs Group.

Text

LED

Colour

Indication

OP Green When on, indicates that the module is operational

AL Red When on, indicates a failure of the module. BYPASS Yellow When on, indicates that the data stream

signal do not pass through RTU. LINE 1-8 Red When on, indicates a failure on the particular

channel. When blinked, indicates that the max slip rate is reached on the particular channel.


2.6.13.Re-timing Output Interface Module "RTU-T1 1.544 Mbit/s" [Option for slots A7 to A14] The ' RTU-T1 1.544 Mbit/s ' is one of the available options for the output interfaces of the OSA 5548B SASE. Each RTU re-times up to eight T1 traffic signals (1.544 Mbit/s) on the basis of the equipment's selected clock reference (issued from the selected channel).

ϕ

OP

AL

LINE

1

2

3

4

5

7

8

6

BYPASS

RTU-T1 OSA942.085.041.82

Axxxxxx



RTU-T1 1.544 Mbit/s (*) 942 085 041.82 A011853 2.2 (*): Outputs Impedance is defined by the type of the associated Outputs Group.

Must only be used with RTU-T1 type Outputs Group.

Text

LED

Colour

Indication

OP Green When on, indicates that the module is operational

AL Red When on, indicates a failure of the module. BYPASS Yellow When on, indicates that the data stream

signal do not pass through RTU. LINE 1-8 Red When on, indicates a failure on the particular

channel. When blinked, indicates that the max slip rate is reached on the particular channel.


2.6.14.Management & Alarms Controller 'MAC-R' (option for slot A15) The 'MAC-R' module is one of the available options for the Management & Alarms Controller of the OSA 5548B SASE. It handles the management of alarms and configuration of the system. Electrical alarm outputs are provided from eight relay contacts which represent the alarm state of the system. This data correspond to the state of the 'D' LEDs and of the general alarm LED on the front panel.

Comment: The memorised alarms ( 'M' LEDs) do not activate electrical the alarm outputs.

The LEDs marked with a 'D' correspond to a direct or active alarm. The 'M' LEDs correspond to a memorised or latched alarm. Once the alarm condition clears, the 'RESET' switch clears the 'M' LEDs. The RESET switch has three positions: - Mid position: Neutral position - Upper position: Clears of the memorised alarms - Lower position: Lamp test - ignites all LEDs on the equipment



'MAC-R' Alarms Module (model 1) 942 085 537.004 A011367 'MAC-R' Alarms Module (model 2) 942 085 534.004 A011375

2.0 only

IN

SEL

CH1

CH2

OUT

LAMP TEST

RESET

AL

MD

ESM

Text

LED

Colour

Indication

ALARM Red This LED indicates a general alarm. It is on when at least one direct alarm ('D' LEDs) is active.

POWER 1 Red When on, indicates an alarm from the PSU 1 module (A17).

POWER 2 Red When on, indicates an alarm from the PSU 2 module (A16).

IN Red When on, indicates an alarm from at least one of the Input Interface Units (A1 to A6).

SEL Red When on, indicates an alarm from at least one of the ILS modules (A18 and A19).

CH 1 Red When on, indicates an alarm from channel 1 (TOM A20, Oscillator Module A21, Phase-Stepper Switch A22).

CH 2 Red When on, indicates an alarm from channel 2 (TOM A25, Oscillator Module A24, Phase-Stepper Switch A23).

OUT Red When on, indicates an alarm from at least one of the Output Interface Units (A7 to A14).

ESM Red When on, indicates an alarm from the ESM module (A26).

MAC


2.6.15.Management & Alarms Controller 'MAC 2-R' (option for slot A15) The 'MAC 2-R' module is one of the available options for the Management & Alarms Controller of the OSA 5548B SASE. It handles the management of alarms and configuration of the system. Electrical alarm outputs are provided from eight relay contacts which represent the alarm state of the system. This data correspond to the state of the LEDs on the front panel.

(*): Channel 1 → TOM A20, Oscillator Module A21, Phase-Stepper Switch A22 Channel 2 → TOM A25, Oscillator Module A24, Phase-Stepper Switch A23

The front panel switch has three positions: - Mid position: Neutral position - Upper position: Activating of the Receiving Attention function. - Lower position: Lamp test - ignites all LEDs on the equipment



A012748 2.1 'MAC 2-R' Alarms Module, relay outputs 942 085 528.025A012755 2.2

Text

LED

Colour

Indication

AL Red When on, indicates a failure of the module. RA Yellow When on, indicates that the Receiving Attention function is

activated. GEN Red This LED indicates a 'GENERAL' alarm condition.

It is 'ON' for the following criterias: - 'CR' alarm - 'MAJ' alarm - 'MIN' alarm - 'U' alarm - 'NU' alarm

CR Red This LED indicates a 'CRITICAL' alarm condition. It is 'ON' for the following criterias:

- alarm from Channels 1 and 2 (*) - alarm from at least one of the Output Interface Units (A7÷

A14) - alarm from at least one of the PSU modules (A16, A17)

MAJ Red This LED indicates a 'MAJOR' alarm condition. It is 'ON' for the following criterias:

- alarm from at least one of the Input Interface Units (A1÷A6) - alarm from at least one of the ILS modules (A18÷A19) - alarm from only one of the Channels (*) - alarm from the ESM module (A26)

MIN Red This LED indicates a 'MINOR' alarm condition. Always 'OFF', no criterias are defined for this type of alarm.

WA Yellow This LED indicates a 'WARNING' condition. It is 'ON' for the following criteria:

- Switching between channel 1 and 2 (*) U Red This LED indicates an 'URGENT' alarm condition.

It is 'ON' for the following criteria: - 'CR' alarm

NU Red This LED indicates a 'NON URGENT' alarm condition. It is 'ON' for the following criterias:

- 'MAJ' alarm - 'MIN' alarm


2.6.16.Power Supply Units 'PSU' (slots A16 and A17) The Power Supply Units convert the voltage of the external power supply to the internal supply voltage of 24 VDC. In order to ensure the highest reliability, two Power Supply Units work in a redundant manner.



PSU-DC (36 to 72 VDC input variant) 942 081 030.03 A005841 PSU-AC (196 to 264 VAC input variant) 942 081 031.03 A011339 PSU-AC (98 to 132 VAC input variant) 942 081 032.03 A011631

All

Text

LED

Colour

Indication

None Green When on, indicates that the module is powered up and is operating normally.

PSU


2.6.17.Input Line Selector Module 'ILS' (slots A18 and A19) The 'ILS' module selects one of the available inputs, according to different criteria. It can operate in several modes:

• AUTOMATIC: the input is selected automatically by the ILS according to a priority table.

• MANUAL: the input is selected manually by the user and remains selected as long as the input is valid

• FORCED: the input is selected manually by the user and remains selected no matter whether the input is valid or not. By using the appropriate commands, the selection mode can be set by software. In order to ensure the required reliability, the ILSs are duplicated. This means that, while one module is operating, the other one stays in stand-by mode. When a failure occurs, the switching between modules happens automatically.



A006010 2.0 A012713 2.1 Input Line Selector 942 085 253.11 A012719 2.2

OP

AL

CHANNEL 1

1 2

3 4

5 6

CHANNEL 2

1 2

3 4

5 6

ILS

Text

LED

Colour

Indication

OP Green When on, indicates that the module is operational. When off, indicates that the module is in stand-by mode.

AL Red When on, indicates a failure condition (fuse, microprocessor)

Channel 1 LED no. k

Green When on, indicates that input no. k is selected and routed to channel 1.

Channel 2 LED no. k

Green When on, indicates that input no. k is selected and routed to channel 2.

where k is between 1 and 6

ILS


2.6.18.Tracking Oscillator Module 'TOM' (slots A20 and A25) The 'TOM', together with its associated Oscillator Module 'OM', forms a digital phase-lock loop. The time constant of the loop is programmable in the range of 100 to 100,000 seconds. When locked to an input reference signal, the 'TOM' regenerates the selected input reference and attenuates jitter and wander on this reference. When no valid input reference is available, the 'TOM'/'OM' enter holdover mode and holds its output frequency to the frequency that was available just before the loss of the input. In order to ensure the required reliability, two 'TOMs' are configured in a redundant manner.

The 'TOM' also measures the frequency and the phase of the active incoming reference relative to the its local oscillator. The measured data is available either through the 'ESM' module or, if there is no 'ESM', through the local port of the 'MAC' module ("RS-232C" port on connector panel).



2.0 A005858 2.1 Tracking Oscillator Module 942 082 065

A012721 2.2

2.048MHz

TOM

IN

FR

OOL

POWER

OUT

Text

LED

Colour

Indication

IN Red When on, indicates that an invalid input or loss of input is detected.

OUT Red When on, indicates the absence of the local oscillator's output signal.

FR Red When on, indicates that the oscillator is not locked to the incoming reference anymore (FREE RUN or HOLD OVER mode).

OOL Red When on, indicates that the oscillator's frequency pulling range has reached the lower or upper alarm limit (10% or 90%).

POWER Red When on, indicates the failure of one of the module's internal power converters.

TOM


2.6.19.Oscillator Module 'OM' (slots A21 and A24) The "Oscillator Module" contains the high stability frequency source that is the heart of the OSA 5548B SASE functionality. There are three versions depending on holdover stability requirement:

- Equipped with a BVA oscillator. - Equipped with an OCXO 8665 oscillator. - Equipped with a Rubidium oscillator.

In order to ensure the required reliability, two modules are configured in a redundant manner.



Oscillator Module (with BVA 8695) 942 082 070.01 A005859 Oscillator Module (with OCXO 8665) 942 082 071.01 A005861 Oscillator Module (OCXO 8665-G) 942 082 071.21 A012585 Oscillator Module (with BVA 8607) 942 082 072.01 A011813 Oscillator Module (with BVA 8600) 942 082 072.11 A012138 Oscillator Module (with Rubidium) 942 082 073.01 A005862

All

Text

Element

Function

Monitoring Connector Monitoring signal

ground symbol

Connector Ground

VC Connector Oscillator control voltage OOL Red LED When on, indicates an out-of-

lock condition of the oscillator θ or Rb Red LED When on, indicates a failure

condition of the module’s oscillator (not available on the module with OCXO 8665).

OUT Red LED When on, indicates that the output signal of the module is not valid

MONITORING

OOL

VC

OUT

or Rb

OM


2.6.20.Phase-Stepper Switch 'PSS' [Slots A22 and A23] The 'Phase-Stepper Switch' module selects one of the two channels (a channel = TOM + OM + PSS). The channel is selected according to the module's priority and/or according to the state of the other channel. The 'Phase-Stepper Switch' module of the redundant channel constantly corrects the signal's phase in order to maintain the phase difference between channels within the specified range. There are two 'Phase-Stepper Switches' because there are two channels.

MONITORING

OP

PRIOR.

BS

AS

Δϕ

HOLD

PRIORITY

The switch has three positions: - Mid position: Neutral position - Upper position: Forces the module to be the selected one. This position lights the 'HOLD' LED and is used during maintenance work on the other channel, in order to prevent accidental channel switching. - Lower position: Sets the priority of the module (first priority).



2.0 2.1 Phase-Stepper Switch 942 085 230.02 A006007 2.2

Text

LED

Colour

Indication

OP Green When on, indicates that the module is operating. In other words, it is the one that provides the frequency to the output interface units

PRIOR. Green When on, indicates that this module has higher priority than the other, redundant module

BS Red When on, indicates an alarm condition that ocurred before the Phase-Stepper-Switch

AS Red When on, indicates an alarm condition of the Phase-Stepper-Switch

Δϕ Yellow When on, indicates that the Phase-Stepper-Switch is correcting the phase of its output signal.

HOLD Red When on, indicates that this module is operating in the secured mode (useful for maintenance).

PSS


2.6.21.Embedded System Manager 'ESM' (slot A26) The "ESM" is an optional module. It provides the gateway to the SyncViewTM management system. It also performs all management functions and provides interfaces to a Local Manager via its front panel RS-232C port, or to a SyncViewTM remote manager via its DCN interface ("MANAGEMENT" port on connector panel). Depending on the ESM type, either X.25, ISDN or Ethernet is supported. ESM also stores the TIE data collected from the IIUs (featuring the measurement option) and computes MTIE, TDEV and relative frequency error graph points for each input.

RS-232

AL

ESM

19

Text

Element

Function

AL Red LED When on, indicates a general alarm condition of the ESM module.

RS-232 Connector RS-232 port used as local terminal port

1: DcD 2: RxD 3: TxD 4: DTR 5: GND 6: DSR 7: RTS 8: CTS 9: RI



'X25' Embedded System Manager 942 081 082 A005842 2.0, 2.1 'X25' Embedded System Manager 942 081 082.03 A012672 All

'ISDN' Embedded System Manager 942 081 083 A011556 2.0 'Ethernet' Embedded System Manager 942 081 085 A005844 2.0, 2.1 'Ethernet' Embedded System Manager 942 081 085.02 A011815 All 'Ethernet' Embedded System Manager 942 081 085.03 A012674 All

ESM


2.7. GPS Antenna Systems

2.7.1. GPS Roof Antenna

The OSA 5548B SASE is delivered with a standard roof antenna/TNC connector, 10m interconnection cable, mounting kit, and lightning protection kit. Optional cables, antennae and accessories can be ordered separately. A roof Antenna Kit is installed with a standard Antenna thread-mounted on a short mast, which is strap-clamped to a longer roof mast about 5-6 feet in height. The Antenna TNC connection is sheltered within the short mast, connected by the 10 Meter cable to an EMP protection block. This block must be mounted at or near the roof to building demarcation, inside a housing.

Standard Active GPS Antenna


Antennaversion

TNCTNC / F

TNC / f

BNC/m

10mLMR400

TNC / m

Antenna

Equip.

TNC / f

Arrestorcapsulealone

EMPprotector

witharrestor

TCN / f

Antenna kitA014192 EMP Kit

A014187

Roof Antenna kitA01419

1

TNC / m

Roof Antenna Kit

2.7.2. GPS Compact Magnetic Antenna An optional Antenna kit mounts to any metallic exterior surface, and is similar in operation to a Wall mounted Antenna.

CompactMagnetic

Antenna Kit(6 meters)

A013083

BNC/m

Magnetic Mount Active Antenna


2.7.3. GPS Optical Antenna An optional antenna kit allowing a longer distance between the antenna and the receptor using isolated optical fibre cables.

• Replaces long cable runs & high gain antennas.

• Easy installation, since cable length is not critical.

• Low emissions.

• Decreased susceptibility to lightning strike damage.

Powersupply cable

L=1.6m

External12V DC +/- 10%

max 250mA

Optional RedundantPower Supply

A014546

cable RG58 L=2m

TNC / m BNC / m

OSA GPS

Optical Antenna kitA014765

Uout 12V DCImax: 1.9A

12V DC toredundantantenna

Galvanic isolation

Mounting Tool + isolation sleeveto protect optical connector

Protection levelIP64

Antenna

Uin 100-240VAC+/- 10% #1

Powersupply cable

L=1.6m

Optical-ElectricalConverter

Uin 100-240VAC+/- 10% #2

Optical Antenna


2.7.4. Interconnection Cables

2.7.4.1.LMR Cables The Roof Antenna Kit is delivered with a 10 meter LMR-400 cable. All Oscilloquartz certified cables are supplied with the following specifications;

Attenuation at 1575 MHz

dB/100m dB/100ft Minimum

Bend Radius Tensile

Strength Cable Delay

16.8 dB 5.1 dB 25.4mm 1 inch 72.6 kg 160 lbs 3.92 ns/m

LMR400 Cable Characteristics

Additional cables and optional lengths of 20m, 60m, and 120m (with line amplifier) can be ordered separately. Cable length 120m is composed of a line amplifier under the Antenna within the stock mast and one 120m segment of LMR-400. Several options are available to extend Antenna connection to longer segments, including Optical simplex (single fiber strand) cable. Cables terminating outside a building should be waterproofed to prevent moisture and ice damage. All hanging cables in vertical conduits and riser closets should be supported by hangers to relieve strain from the weight of the cable.

2.7.4.2.Optical Fiber Cables The optical fiber cables are patchcord reinforced with ST-M connectors. Available in 60m and 200m or by meter. Over 200m, special professional installation is required. Maximum length up to 8000m.

Note:

Please contact Oscilloquartz for further optional configurations and recommendations to meet your needs.


3. Installation

3.1. Unpacking and Inspection Check first that the packing does not have any signs of rough handling such as dents or scratches, which might have occurred during transportation. Also inspect the equipment carefully for possible damages (knobs broken, handles bent, etc.). Should the equipment have suffered any damage, immediately notify the carrier and retain the packing material for inspection.

3.2. Working Conditions In order to work within specification, the OSA 5548B SASE should be installed at a location which does not exceed the following working conditions: • Operating temperature range : -5°C to +45°C • Humidity : Up to 95% non condensing • EMC ; EN50081-1, EN50082-1

3.3. Tools required For the installation and commissioning of the OSA 5548B SASE the following tools are needed: An IBM-compatible PC meeting the following requirements :

a) Monitor b) 286 Processor or better c) At least 640K of RAM d) MS-DOS 4.1 or later e) 3.5" floppy disk drive f) RS-232C serial port g) Mouse

An RS-232C cable to connect the PC to the OSA 5548B SASE.

Terminal emulator software

Multimeter (DC and AC, frequency range up to at least 3 MHz)

• Oscilloscope (bandwidth of at least 30 MHz)


3.4. GPS Antenna Installation

Select the appropriate antenna location while respecting the guidelines shown in the following figures.: Roof Installations are more complex and require some form of Lightning Protection, and weatherproofing. In general, a small handheld GPS receiver can be used to check Site visibility in Wall and Window Installations to judge sky visibility and coverage. Survey for at least ¼ - ½ of the GPS constellation period (3 ~ 6 hours), at regular intervals, for visible satellite counts above 5 in view, with levels above 36 dB CNo.

10m cable

Lightning kit

GPSunit

External wall

Oscilloquartz20m

60m

Lineamplifier 120m

Principle for the GPS Antenna Installation

The following sections describe Antenna subsystem installations in series of point notation. All installations require some form of site survey and planning prior to deployment.


3.4.1. Roof Antenna Installation

SKY

A 2 m

90°

ANTENNA

10 - 20°

OBSTRUCTION(BUILDING orLANDSCAPE)

2m FROM METALLIC OBJECTGREATER THAN 20cm IN ANY DIMENSION

* GROUNDINGCONDUCTOR

HOUSING

EMP PROTECTORPROTECTED AREA

UNPROTECTED AREA(SHORT DISTANCE)

CABLE LENGTH = +

* CUSTOMER SUPPLIED

* MAST

* LIGHTNING ROD

GROUNDINGSYSTEM

*

A

COPPER STRAP 5M LONG*

*

2OSA GPS RECEIVER

21

1

The Principle of ROOF mounted GPS Antenna Installation


• The antenna must be mounted in an upward position within 5° of the

vertical.

• The antenna should be installed at the highest possible point available at

the site. This is to ensure that any surrounding obstacles (trees, buildings

or other installations, etc.) are not exceeding a 20° elevation angle.

• To avoid influence of reflected waves, the antenna must not be installed

less than 2m away from metallic objects with a dimension greater then 20

cm.

• Antenna installation should be avoided in close proximity with other

receivers or transmitters, to reduce the susceptibility of Radio

Interference.

• Lightning protection devices, if installed, must be installed as close as

possible to the cable entry inside the building. Furthermore, grounding of

the various elements must be installed with low resistance and low

inductance conductors.

3.4.2. GPS Antenna and Lightning Protection Assembly The antenna and the lightning protection must be assembled with the following manner :

EMP protectorwith arrestor

Ant

enna

Equi

p.

PROVIDED BYCUSTOMER

cable(10m)

OUTDOOR

INDOOR

OSA GPSUNIT

GPS Roof Antenna Final Assembly


• Lightning protection devices, if installed, must be installed as close as

possible to the cable entry inside the building.

• Place the Lightning Protector in a Electrical Junction Conduit Box for

maximum protection, within an area that can be accessed to allow Gas

Tube capsule replacement.

• Avoid looping or coiling excess cable on the interior demarcation of the

roof

• Earth or Ground wires connected to the Lightning Protector must be as

straight and short as possible, connected to the nearest Building Earth

Terminal point if possible

• Avoid bending the coaxial cable entrances to the Lightning Protector and

observe the minimum bend radius of the cable

• Conduit Entrances through a Wall Bore Hole must be angle to prevent

water intrusion into the Lightning Protection Junction Box

• Roof Cable segment should be weighted within a conduit to prevent the

roof coax section from blowing around in windy conditions

• The Antenna mast must be securely strap-clamped to a main mast, at

least 2m (6.5ft) above the roof line or rampart wall, and the antenna dome

must be above the main mast

• Never twist the Antenna with attached BNC or TNC connection; twist the

smaller mounting stock (white or gray plastic tube with threading) to

thread it to the Antenna; twisting the antenna dome will damage or break

the coaxial connector

• Install conduit with liberal bend radius in each angle, about twice the coax

bend radius limit to allow the coax to be pulled easily without binding

• Always pull the coax through conduit with an extra leader-pilot string to

allow other replacement coax if damage to existing coax occurs

• Use junction boxes at regular intervals to allow intermediate pulling

access

• Always check for the presence of the + 5 Volt DC power from the Antenna

connection towards the Receiver unit during troubleshooting; absence of

the (approximate) voltage


3.4.3. Optical Fiber Antenna Installations

The Principle of OPTICAL FIBER GPS Antenna Installation

• Do not insert the cables in tubes, the connector is not protected and there

is a great risk of damage.

• When unrolling the cable respect the minimum bend radius of 60mm.

• Never pull the cable by its connector.

• Avoid mechanical constraints on the connector. The cable must be

attached every 2 meters for antenna mounting.

• Do not ever tighten the cable with quick attaches such as Colson or

TyRap, etc.

• The ceramic ferrule of the connector must always be protected when the

cable is not connected. A plastic cap is provided.

• The ST connector itself is not waterproof. When using outdoors, cover the

connector with a supple isolation sleeve. (Provided)

CAUTION

For cable lengths exceeding 200m, it is necessary to revert to professional optical fiber installation to avoid damage or breaking of the fiber.

OSA GPS Receiver

Optical to Electrical Converter

DC 12V Power Supply

PWR FAULT

Antenna

Simplex multimode fiber cable 50/125um or 62.5/125um ST connectors

TNC/m - BNC/m cable

DC 12V Power Supply


STEP

ACTION

1 Connect the antenna to the Oscilloquartz DC 12V power supply (IP64). Inside the box are cabling instructions.

2 Connect the optical/electrical converter to the power supply.

3 Connect the TNC/m BNC/m cable between the optical/electrical converter and the GPS receiver.

4 Connect the simplex/multimode fiber cable between the antenna and the optical/electrical converter .Use the mounting tool and isolation sleeve to cover and protect the GPS antenna's ST connector.

Note:

After correct installation, the "fault" LED on the optical/electrical converter must shut off.


3.5. Power supplies The OSA 5548B SASE features two independent power inputs. Depending on the type, the unit will be equipped with a combination of two of the following Power Supply Units (PSU):

Part Number

PSU Type

Voltage Range

Fuse

942.081.030.03 DC/DC 36 VDC to 72 VDC

∅5 x 20 mm

6.3 AT 942.081.031.03 AC/DC 196 VAC to 264 VAC

∅5 x 20 mm

3.15 AT 942.081.032.03 AC/DC 98 VAC to 132 VAC

∅5 x 20 mm

3.15 AT Check that the type of Power Supply Units in your OSA 5548B SASE correspond to your power feeds.

Power InputsPanel

Power Supply Unit (PSU)locations


3.6. Power-Up Depending on the type of PSUs fitted, the equipment will have one of the following Power Input panels:

In order to ensure correct powering-up of the system, it is necessary to follow these instructions:

Connect the ground cable to the earth stud GND. The ground stud is an M6 screw. Connection must be made with a suitable connector.

Measure voltages and polarities of the external power sources before connecting them to the OSA 5548B SASE. The voltages must be within the ranges specified.

Connect the two power sources to the connectors POWER 1 and POWER 2 respectively.

Allow for the SASE to warm up, so that the oscillators can reach their operating temperature. Depending on the Oscillator modules installed, the minimum warm-up time is as follows:

Oscillator Module Oscillator Type Warm-up Time 942.082.070.xx BVA 8695 2 hours 942.082.071.xx OCXO 8665 30 minutes 942.082.072.xx BVA 860x 2 hours 942.082.073.xx Rubidium 30 minutes

Power Consumption : 140 W (typical, steady state)

: 160 W (maximum value during warm-up)

GNDstudGND

stud

GND stud


3.6.1. "POWER 1" and "POWER 2" Connectors

3.6.1.1. DC Supplies

3.6.1.2.AC Supplies

The connector for AC power supplies is a standard CEE 22/VI, IEC 320/VI, DIN 49457/1, SEV typ113, SNV 24573 or compatible type.

Pin No.

Description

A + DC B NC C - DC D NC E NC

The connector for the DC power supplies is a Cannon MS-3102A 145-5P.

PE L N

Location of AC fuses


3.7. Commissioning of the GPS-I modules Prior to commissioning the main functions of the OSA 5548B SASE, it is necessary to commission the GPS-I modules (if applicable). It is necessary to check, that the type of GPS-I module corresponds to the installed antenna (standard or with down-converter), that the GPS-I modules receive a clean signal from the satellite system and that the timing signal at the output of each module is valid. Please refer to the GPS-I Operating Manual in the Technical part of this manual.

Antenna Inputfor second GPS-I

(Slots A5,A6)

GPS-I Receiver Modulelocations

Antenna Input for first GPS-I (Slots A3,A4) Time Outputs (Irig-B+1PPS)

for second GPS-I (Slots A5,A6)

Time Outputs (IRIG-B+1PPS)for first GPS-I (Slots A3,A4)


3.8. Connecting the Input References Depending on the configuration of the SASE 5548B, there can be up to six input lines that need to be connected to the input interface units. These need to be connected in accordance with the user’s network plan and/or wiring schedules.

3.8.1. INHIBIT Function Each Input Interface Unit has two digital HCMOS-compatible inputs called INHIBIT 1 and INHIBIT 2. Each of these inputs inhibits the function of the relevant input module if the logic level is 1. An inhibited input cannot be selected as a reference input by the ILS. Since the INHIBIT inputs feature a pull-up resistor, their logic level is 1, if they are not connected to a digital signal source. If the INHIBIT inputs are not used, they must be tied to ground externally. This is done by connecting the pre-wired Sub-D type connector plugs provided with the equipment to the INH connectors described below.

3.8.1.1."INH1-2", "INH3-4" and "INH5-6" Connectors

1

9

6

5

Connector Pin-outs Pin No. INH 1-2 INH 3-4 INH 5-6

1 Inhibit 1 on IN1 Inhibit 1 on IN3 Inhibit 1 on IN5 2 Inhibit 2 on IN1 Inhibit 2 on IN3 Inhibit 2 on IN5 3 Inhibit 1 on IN2 Inhibit 1 on IN4 Inhibit 1 on IN6 4 Inhibit 2 on IN2 Inhibit 2 on IN4 Inhibit 2 on IN6

5-9 Ground Ground Ground

INH1-2 inputs processed by IIU-1 and IIU-2

(Slots A1 and A2)

IIU-1 to IIU-6locations


(Slots A3 and A4)


(Slots A5 and A6)


3.8.1.2.Input Connections

• Check that the incoming reference signals match the input interface types (shape, level, frequency, impedance)

• Connect the input lines to the input connectors according to the wiring plan. In the case where an input reference signal must be derived from a G.703/6

traffic carrying signal, insert an OSA TEX-P Passive Timing Extractor ( part no. 942.089.035) and connect it to the OSA 5548B SASE as described in the TEX-P Operating Manual in the Technical part of this manual.

• Wait 30 seconds for the TOM to execute a complete initialisation cycle. • Activate both priority switches on the Phase-Stepper Switch modules (one

after the other). • Reset the alarm latches of the 'MAC' module (not applicable for ‘MAC 2’) by

setting the switch on its front panel to the upper position. • Check that:

• Check the signals at the synchronisation outputs of the SASE, using an oscilloscope

• The equipment is now in normal operation mode.

All red LED's are off (this assumes that the SASE has warmed up)

Reference Input 1processed by IIU-1

(Slot A1)


(Slot A2)


(Slot A4)


(Slot A3)


(Slot A5)


(Slot A6)

IIU-1 to IIU-6locations


3.9. Connecting the output signals Depending on the configuration of the OSA 5548B SASE, there are up to 112 outputs (seven Output Groups with 16 outputs each) available for synchronising telecommunication equipment. These need to be connected in accordance with the user’s network plan and/or wiring schedules.

3.9.1. Output Connections • Check that the required output signals are compatible with the output

interface modules installed in the OSA 5548B SASE (shape, level, frequency, impedance).

• Connect the outputs to the equipment that needs synchronisation in accordance with the user’s network plan and/or wiring schedules.

The OSA 5548B SASE is now installed and ready to synchronise the equipment connected to its outputs.

Outputs Group 7 processed by OIU-

7&8

Outputs Group 6 processed by OIU-6


or OIU-5&6 (protected) Outputs Group 2

processed by OIU-2 Outputs Group 1 processed by OIU-1

or OIU-1&2

Outputs Group 4processed by OIU-4


or OIU-3&4

OIU-1 to OIU-8 locations


3.9.2. Output Connectors for symmetrical (balanced) outputs The following connectors are available for symmetrical outputs:

3.9.2.1. Sub-D Output Connectors The associated connector panel has two connectors with the following pin-out:

1

9

6

5

3.9.2.2.BNO Output Connectors The associated connector panel has four connectors with the following pin-out:

Pin No.

Upper Connector

Lower Connector

1 Output 1 (+) Output 3 (+) 2 Output 1 (-) Output 3 (-) 8 Output 2 (+) Output 4 (+) 9 Output 2 (-) Output 4 (-)

4 to 6 Ground Ground 3, 7 NC NC

Pin No.

Signal

1 Output (+) 2 Output (-) 3 Ground

1 2

3


3.10. Connecting an Output Expansion Unit Further outputs can be provided by adding one or more output expansion units, such as OSA 5530B SDU. To facilitate this, the OSA 5548B SASE provides the following facilities: • Redundant expansion outputs at 2.048 MHz: "EXP. OUTPUT 1" and "EXP.

OUTPUT 2", used to drive the inputs of the expansion shelf(ves). • A serial multipoint bus "Expansion Port", used for managing the expansion

units. • SSM ports "SSM1" and "SSM2", used for the transmission of the SSM status

from the SASE to the expansion units. Two connectors are provided for redundancy.

"SSM1"&"SSM2" Port (for SSM transmission to an

Expansion Shelf) "Expansion Port"

(for managing an Expansion Shelf)

Exp. Outputs 1&2 2.048 MHz Outputs, 0.5

Vrms/50Ω


3.10.1."Expansion Port" Connector This connector provides a serial multipoint bus used for managing external units such as an OSA 5530B SDU.

6

9

1

5

3.10.2."SSM1" and "SSM2" Connectors These connectors are used for the transmission of the SSM status from the SASE to the SDUs. Two connectors are provided for redundancy.

12

3

Pin No.

with ESM

with Dummy Load

1 Manuf. Bus, SDA NC 2 NC 'MAC' COM4, Rx 3 NC 'MAC' COM4, Tx 4 Manuf. Bus, SCL NC 5 Ground Ground

6 to 9 NC NC

Pin No.

Description

1 SSM Extension Bus, SCL 2 SSM Extension Bus, SDA 3 Ground


4. Configuring the Unit To configure the OSA 5548B SASE the following main parameters need to be set:

• Priorities of the incoming reference signals These parameters are stored and processed by the ILS Modules. The priorities of the input references should be determined in accordance with the user’s synchronisation network plan.

• Servo loop time constant. This parameter is stored and processed by the TOM Modules. Its target value depends on the characteristics of the local oscillator and the incoming reference. The BVA 8695 oscillator (with very low ageing BVA quartz crystal), allows the user to set a higher loop time constant than with the 8665 oscillator.

• Alarm detection limits on phase time (XINMAX) and fractional frequency offset (YINMAX). These parameters are stored and processed by the TOM Modules. Their values determine the accepted quality range of the incoming reference. When out of limits, the reference is automatically rejected by the ILS module. The values depend solely on the quality of the reference signal and must be chosen by the user. It is important to note that the limits should only be programmed when the system's servo loop is locked. Indeed, if one chooses a Yinmax of say 10-9 when the system is in hold-over mode (loop not locked to the reference), the oscillator's ageing drift will reach this value after a couple of days. If this is the case, a reference signal of good quality and accurate frequency will be rejected, because the deviation Yoscillator - Yreference will have exceeded the limit of 10-9.

4.1. Factory default parameters At delivery, the ILS parameters are set to the following default values:

Mode Automatic Priority Table Prior 1 - IN1

Prior 2 - IN2 Prior 3 - IN3 Prior 4 - IN4 Prior 5 - IN5 Prior 6 - IN6

At delivery, TOM parameters are set to the following default values:

Associated Oscillator type

Loop time constantin seconds

XINMAX in seconds

YINMAX

BVA 1200(1) / 5000(2) 3.0E-06(1) / 5.0E-07(2) Same as the BVA’spulling range

OCXO 8665 1200(1) 3.0E-06(1) Same as OCXO pulling range

Rubidium 1200(1) 3.0E-06(1) Same as Rb pulling range

(1): SSU Level (2): PRC Level


4.2. Configuring Procedure if the unit is equipped with an ESM If the OSA 5548B SASE is equipped with an ESM, then the ILS and the TOM modules can be configured:

• Locally, via the ESM’s front panel RS-232C port, using a Local Manager (LM) loaded on a PC. Please refer to the Operating Manual of the Local Manager for instructions on using the LM application (not included in this set of manuals).

• Locally, via the ESM’s front panel RS-232C port, using a terminal emulator and typing the appropriate MML commands. A detailed description of the MML commands is given in the LM Operating Manual (not included in this set of manuals).

• Remotely, via the ESM’s Management port, using a SyncView™ Regional or Network Manager (RM or NM). For more information please refer to the SyncView™ User Guide (not included in this set of manuals).

ESM "RS-232C" Port (for local management)

"MANAGEMENT" Port (for Network connection and

SyncViewTM management


4.3. Configuring procedure if the unit is not equipped with an ESM Connect an IBM-compatible PC to the 'RS-232C' port on the connector panel.

Connector pin-outs for this port are given below. Use a terminal emulator. Set the parameters to 9600 baud, 8 characters, 2 stop bits, no parity.

4.3.1. "RS-232C" Connector (local management port, without ESM)

If the 5548B SASE is not equipped with an ESM, "RS-232C" port serves as the local management port (RS-232C port of the MAC).

6

9

1

5

Pin No.

with ESM

with Dummy Load

(that case) 2 NC 'MAC' MAIN, Rx 3 NC 'MAC' MAIN, Tx 5 NC Ground

1,4,6,7,8,9

NC NC

"RS-232C" Port (for local management, without ESM)


4.3.2. Configuring the ILS's Modules

If the OSA 5548B SASE is not equipped with an ESM, the commands are sent to the ILS modules via the 'RS-232C' port on the connector panel.

For redundancy, the equipment contains two ILS modules (A18 and A19).

• To configure the ILS modules use the command set described in the ILS Operating Manual in the Technical part of this document.

• Please note that all messages sent to and from the ILSs are preceded by the character '#'.

• The ILS modules are configured via their RS-232C ports, which are connected internally to the MAC's communication port no. 3. To start communicating, first send the following command:

$COM=3<LF><ETX>

This command instructs the MAC to select the appropriate internal communication port and thus allow the user to send or receive messages from the ILS modules.

• A priority value ranging from 1 to 6 must be assigned to each of the input

interface modules and GPS-I modules. 1 is the highest priority. All inputs must have different priorities. If the SASE is equipped with less than 6 input interfaces, the inputs that are not equipped get the lowest priorities (e.g. priority 6). The following commands are used to modify the operating mode and priority table:

#MODE=AUTOMATIC or FORCED or MANUAL #PRI=prior-IN1, prior-IN2, prior-IN3, prior-IN4, prior-IN5, prior-IN6


4.3.3. Configuring the Tracking Oscillator Modules (TOM)

If the OSA 5548B SASE is not equipped with an ESM, the commands are sent to the TOMs via the 'RS-232C' port on the connector panel.

For redundancy, the unit contains two TOM modules (A20 and A25). The TOM modules are configured via their internal RS-232C ports. The first TOM (module A20) is connected to the MAC's communication port number 1 and the second TOM (module A25) is connected to the MAC's communication port number 2.

• To configure the TOMs use the command set described in the TOM Operating Manual in the Technical part of this document.

• To communicate with the first TOM (A20), send the command:

$COM=1<LF><ETX>

• To communicate with the second TOM (A25), send the command:

$COM=2<LF><ETX>

These commands instruct the MAC to select the appropriate internal communication port and thus allow the user to send or receive messages from the TOMs.

Setting the loop time constant: • The loop time constant is very important for the correct functioning of the

TOM module. After sending the command to set a value for the loop time constant, the user is prompted to confirm the entry in order to prevent unwanted programming errors:

TAU=xxx Command ARE YOUR SURE (Y/N)? Response. Type Y if the value is correct. Setting the XINMAX and YINMAX values: • The following commands are used to modify the parameters Xinmax and

Yinmax: XINMAX=xxx YINMAX=xxx


5. Remote Operations The OSA 5548B SASE features the following remote control/monitoring capabilities:

Electrical alarms (Eight relay contacts).

Local management via a RS-232C port

Network Management via a dedicated Management port (X25, ISDN or Ethernet) This function is only available when the equipment is equipped with an ESM.

The remote monitoring and control capabilities depend on whether the unit is equipped with an ESM or not.


5.1. Electrical Alarm Outputs The Monitoring and Alarms Controller module (MAC in A15) centralises all the alarms produced by the other modules in the equipment. It displays an alarm summary on the front panel and also produces the relative electrical outputs for remote alarm monitoring. These electrical alarms are relay isolated contacts and are available on the 'ALARM OUTPUTS' connector. Additionally, the ESM module (A26) provides three relay contacts for each of its internal Alarms/Status signals. For details of these alarms please refer to the ESM Operating Manual in the Technical part of this document. These electrical signals are available on the 'STATUS' connector.

ESM

location

"ALARM OUTPUTS" Signals issued from 'MAC' module

(Slot A15)

"STATUS" Outputs Signals issued from ESM module

(Slot A26)

'MAC' Modulelocation


5.1.1. "ALARM OUTPUTS" Connector

This connector provides a pair of electrical contacts for each of the alarm signals generated by the MAC. Connection 1 and 2 are the contacts of the relay fitted into the MAC. The normal factory setting (except for 'RA', available with MAC 2) is normally open when the alarms are active. Please refer to the MAC Operating Manual in the Technical part of this document, if you wish to change this setting.

5.1.1.1.Pin-out (with Alarms module 'MAC-R') Pin No.

(connections 1-2) Description

Indication

1-14 Power 1 alarm Indicates an alarm from the PSU 1 module (A17). 2-15 Power 2 alarm Indicates an alarm from the PSU 2 module (A16). 3-16 IIU alarm Indicates an alarm from at least one of the IIU modules (A1 to A6). 4-17 ILS alarm Indicates an alarm from at least one of the ILS modules (A18 and A19). 5-18 Channel 1 alarm Indicates an alarm from channel 1

(TOM A20, Oscillator Module A21, Phase-Stepper Switch A22). 6-19 Channel 2 alarm Indicates an alarm from channel 2

(TOM A25, Oscillator Module A24, Phase-Stepper Switch A23). 7-20 OIU alarm Indicates an alarm from at least one of the OIU modules (A7 to A14). 8-21 General alarm Indicates a general alarm condition. It is on when at least one alarm is active.

The "ESM" Alarm (front panel) also generates an electrical "General" Alarm. 9 to 13, 22 to 25 NC

5.1.1.2.Pin-out (with Alarms module 'MAC 2-R') Pin No.

(connections 1-2) Description

Indication

1-14 CRITICAL alarm Indicates a 'CRITICAL' alarm condition. 2-15 MAJOR alarm Indicates a 'MAJOR' alarm condition. 3-16 MINOR alarm Indicates a 'MINOR' alarm condition. 4-17 WARNING indication Indicates a 'WARNING' condition. 5-18 URGENT alarm Indicates an 'URGENT' alarm condition. 6-19 NON URGENT alarm Indicates a 'NON URGENT' alarm condition. 7-20 RECEIVING

ATTENTION Indicates that the Receiving Attention function is activated.

8-21 GENERAL alarm Indicates a 'GENERAL' alarm condition. 9 to 13, 22 to 25 NC

1

13

14

25


5.1.2. "STATUS" Connector This connector provides three relay contacts for each of the Alarms/Status signals generated by the ESM (refer to the ESM Operating Manual, in the Technical part of this document). Connections 1 and 3 are the relay contacts which are normally open when the alarm is active. Connections 2 and 3 are the relay contact which are normally closed when the alarm is active.

1

13

14

25

Pin No. (Connections 1-2-3)

Description

1-2-14 Relay 1 3-4-16 Relay 2 5-6-18 Relay 3 7-8-20 Relay 4

9-10-22 Relay 5 11-12-24 Relay 6

13 Ground 15,17,19,21,23,25 NC


5.2. Network/Local Management Capabilities if the unit is equipped with an ESM If the OSA 5548B SASE is equipped with an ESM, then the unit can be managed:

• Locally, via the ESM’s front panel RS-232C port, using a Local Manager (LM) loaded on a PC. Please refer to the Operating Manual of the Local Manager for instructions on using the LM application (not included in this set of manuals).

• Locally, via the ESM’s front panel RS-232C port, using a terminal emulator and typing the appropriate MML commands. A detailed description of the MML commands is given in the LM Operating Manual (not included in this set of manuals).

• Remotely, via the ESM’s Management port, using a SyncView™ Regional or Network Manager (RM or NM). For more information please refer to the SyncView™ User Guide (not included in this set of manuals).

Note: The 'RS-232C' port (on the connector panel) is not connected when an ESM is fitted.

With this configuration, the following functions can be performed:

- Equipment Configuration (Input Priorities, TOM loop's time constant, etc.) - Alarm management - Calculation of the MTIE, TDEV and Yaverage for all input signals terminated

by an input interface module with TIE measurement function - Security management (5 password levels)





5.2.1. Connecting to the Local Manager (LM) The Local Manager is a software application that runs on an IBM compatible PC. One of the serial ports of the PC is connected to the RS-232C port on the front panel of the ESM (9 pin Sub-D connector). Please refer to the Operating Manual of the Local Manager for instructions on using the LM application (not included in this set of manuals).

5.2.2. Connecting to a SyncView™ Remote Manager

SyncView™ is a management system for remote management of Oscilloquartz synchronisation equipment. SyncView™ remote managers communicate with the managed equipment via a Data Communication Network 'DCN' (X25, ISDN or Ethernet). To enable this, the OSA 5548B SASE’s ESM is equipped with the appropriate interface hardware and drivers. The unit is connected to the DCN via the 25 pin Sub-D 'MANAGEMENT PORT' connector located on the connector panel. For more information on this application please refer to the separate SyncView™ Operating Manual (not included in this set of manuals).


5.3. Local Management Capabilities if the unit is not equipped with an ESM If the OSA 5548B SASE is not equipped with an ESM, then the unit can be managed:

• Locally, via the 'RS-232C' port on the connector panel, using a terminal emulator and typing the commands associated with the relative modules.

With this configuration, the following functions can be performed:

- Unit Configuration (Priority of the Inputs, TOM loop time constants, ...) - Alarms management

5.3.1. "RS-232C" Connector (local management port, without ESM)

If the 5548B SASE is not equipped with an ESM, "RS-232C" port serves as a local management port (RS-232C port of the MAC).

6

9

1

5

Pin No.

with ESM

with Dummy Load

(that case) 2 NC 'MAC' MAIN, Rx 3 NC 'MAC' MAIN, Tx 5 NC Ground

1,4,6,7,8,9

NC NC

"RS-232C" Port (for local management, without

ESM


5.3.2. Operations

Communication with the unit is done using the TTY protocol and is processed by the MAC Alarms Module (A15). All characters are transmitted in ASCII format (0 to 127) and each line is terminated by a 'LF' (0AH) character. Messages generated by the MAC are terminated with the character ETX (03H). The MAC will accept commands terminated with either 'LF' (0AH) or 'CR''LF' (0DH) (0AH). Although not necessary, commands sent to the MAC can be terminated with 'ETX' (03H). All messages sent to or from the MAC are prefixed by the character '$'. Messages without '$' are sent to or from those modules within the equipment which are connected to the internal RS-232C ports (e.g. TOM and ILS modules). To communicate with these modules, select the appropriate communication port number using the command $COM=n (1≤n≤4). The MAC will then enable bi-directional communication and adapt the communication parameters accordingly. To start communicating with the TOM modules (A20 and A25), send the command:

$COM=1<LF><ETX> for the first TOM (A20) or $COM=2<LF><ETX> for the second TOM (A25) To start communicating with the ILS Modules (A18 and A19), send the command:

$COM=3<LF><ETX>

These commands instruct the MAC to select the appropriate internal communication port and thus allow the user to send or receive messages from the relevant modules. Please refer to the MAC, TOM and ILS Operating Manuals for the command set, in the Technical part of this document.


5.3.3. Internal Configuration (managed by the MAC Alarms Module A15)

This section provides a brief description of the input/output discrete lines within the MAC. For a complete description of this module, please refer to the separate MAC Operating Manual which provides the information required to use the RS-232C functions with the help of the optional SMA software. MAC Alarm Input lines alarms:

F3MAC input lines Alarm detected 1 (logic level 0) Failure of PSU 1 (A17) 2 (logic level 0) Failure of PSU 2 (A16) 3 (logic level 1) Failure of IIU 1 to 6 (A1 to A6) 4 (logic level 1) Failure of ILS 1 and 2 (A18 to A19) 5 (logic level 1) Failure of TOM 1 (A20) 6 (logic level 1) Failure of TOM 2 (A25) 7 (logic level 1) Failure of Oscillator Module 1 (A21) 8 (logic level 1) Failure of Oscillator Module 2 (A24) 9 (logic level 0) Not used

10 (logic level 0) Not used 11 (logic level 1) Failure of Phase-Stepper Switch 1 (A22) 12 (logic level 1) Failure of Phase-Stepper Switch 2 (A23) 13 (logic level 1) Failure of OIU 1 to 4 (A7 to A10) 14 (logic level 1) Failure of OIU 5 to 8 (A11 to A14)

MAC Status lines:

F3MAC input lines Status on unit 15 (logic level 0) Phase-Stepper Switch 1 (A22) in operation 16 (logic level 0) Phase-Stepper Switch 2 (A23) in operation

MAC Control lines functions:

F3 MAC control lines Function selected on unit 1 (logic level 0) ILS 1 (A18) priority 2 (logic level 0) ILS 2 (A19) priority 3 (logic level 0) Phase-Stepper Switch 1 (A22) priority 4 (logic level 0) Phase-Stepper Switch 2 (A23) priority

MAC Internal RS-232C port allocation:

F3MAC RS-232 Communication with COM 1 TOM 1 (A20) COM 2 TOM 2 (A25) COM 3 ILS 1 and 2 (A18 and A19) COM 4 Expansion Port,

when fitted with ESM Dummy Load board


6. Commissioning Procedures

6.1. Checking the redundancy of the Power Converter modules

Disconnect the first power source ("POWER 1" connector). Check that the following LEDs are lit on the MAC:

'General Alarm' is on 'Power 1 (D+M)' is on

All other red LEDs are off

Re-connect the first power source ("POWER 1" connector). Disconnect the second power source ("POWER 2" connector). Check that the following LEDs are lit on the MAC:

'General Alarm' is on 'Power 1 (M)' is on

'Power 2 (D+M)' is on All other red LEDs are off

• Re-connect the second power source ("POWER 2" connector). Clear the "M" LEDs by pressing the switch on the MAC’s front panel to the upper position, and check that:

All red LED's are off

Power InputsPanel

'MAC' Module location


6.2. Commissioning the GPS-I modules Before commencing, it is necessary to check that the type of GPS-I module corresponds to the installed antenna - i.e. standard or with down-converter, that the GPS-I modules receive a clean signal from the satellite system and that the timing signal at the output of the modules is valid. Please refer to the GPS-I Operating Manual in the Technical part of this manual for more details.

Antenna Inputfor second GPS-I

(Slots A5,A6)

GPS-I Receiver Modulelocations

Antenna Input for first GPS-I (Slots A3,A4) Time Outputs (Irig-B+1PPS)

for second GPS-I (Slots A5,A6)

Time Outputs (IRIG-B+1PPS)for first GPS-I (Slots A3,A4)


6.3. Checking the Input Line Selectors The ILSs feature three operating modes, namely "AUTOMATIC", "MANUAL" and "FORCED". In this section we assume that the ILSs are working in the "AUTOMATIC" mode, since this is the factory default setting. If the mode has been changed, set it to "AUTOMATIC" by using the commands described in the operating manual of the ILS in the technical part of this document.

• Check that the LEDs on the active 'Input Line Selector' (A18 or A19) are in the following state:

This indicates that input k1 is now selected.

OP is on AL is off

Channel 1 # k1 is on all other LEDs of Channel 1 are off

Channel 2, # k1 is on all other LEDs of Channel 2 are off where k1 is the input with priority 1.

Location of Input Line Selectors 'ILS'


Disconnect the input (or GPS antenna input) with priority 1. Check that, after

approximately 2 seconds:

• Repeat the previous step for all remaining input lines (or GPS inputs) in the

order of priority (priority 3, then 4, etc.), until all input lines (or GPS inputs) except the one with the lowest priority are disconnected.

• Connect the input line (or GPS antenna input) with priority 1. Check that, after approximately 2 seconds:

• Connect all input Lines and GPS antenna inputs.

• Initiate a 'Reset' by setting the switch on the front panel of the MAC to the upper position.

• Check that:


OP is on AL is off



OP is on AL is off




All red LEDs are off


6.4. Checking channel redundancy The system contains two independent channels each containing a TOM, an Oscillator Module, and a Phase Stepper Switch). Channel selection is controlled by the 'Phase-Stepper Switch' modules (A22) and (A23). During normal operation, one of the two modules is in 'operation' (green LED "OP" on), while the other is in 'stand-by' mode (green LED "OP" off).

6.4.1. Manual procedure for checking channel redundancy

Procedure:

On the Phase-Stepper Switch module in stand-by mode (green LED "OP" off), push the switch located on the front panel to the 'PRIORITY' position and release it.

Check that:

The module is now in 'operation' (green LED "OP" on)

No alarm has been triggered

Phase-Stepper Switcheslocation


6.4.2. Remote procedure for checking channel redundancy

It is also possible to check channel redundancy by software control, as both the MAC and ESM allow the priority state to be changed.

6.4.2.1.Procedure if the unit is not equipped with an ESM: If the SASE is not equipped with an ESM, it is possible to modify the priority status via the MAC's local RS-232C port ("RS-232C" port on connector panel) using the command string $CTRL=xxxxxxxx<LF><ETX>, where:

$CTRL=011111111 prioritises Input Line Selector no. 1 (A18) $CTRL=101111111 prioritises Input Line Selector no. 2 (A19) $CTRL=110111111 prioritises channel no. 1 (A20, A21, and A22) $CTRL=111011111 prioritises channel no. 2 (A23, A24, and A25) $CTRL=111111111 cancels all priorities; when in this condition during a power-up cycle, operating modes ('operational' or 'stand-by') are set randomly.


"RS-232C" Port (for local management, without ESM)




6.4.2.2.Procedure if the unit is equipped with an ESM: If the SASE is equipped with an ESM, the priority status can be modified via the ESM’s front panel RS-232C port or remotely over a data communication network (DCN) using the Oscilloquartz SyncView™ management system. • In the case of remote management by SyncView™, please refer to the

SyncView™ User Guide (not included in this set of manuals).

If the adjustment is done locally, there are two methods that may be used: • Using a Local Manager (LM); please refer to the separate LM Operating

Manual (not included in this set). • Using a terminal emulator and typing the appropriate MML commands. A

detailed 'MML Description' is contained in the LM User Guide (not included in this set).


6.5. Checking the Local Port of the MAC module (Unit without an ESM)

Procedure:

Connect an IBM-compatible PC to the "RS-232C" port on connector panel.

Set the parameters to 9600 baud, 8 characters, 2 stop bits, no parity

With a terminal emulator, execute the sequence of instructions given in the table below. Check the response of the system at each step.

Command

Response

$DATE<LF><ETX $DATE=dd-mm-yy hh:mm:ss<LF><ETX

$COM=1<LF><ETX> -- ALA xxxxxxxx (0<=x<=1)

$COM=2<LF><ETX> -- ALA xxxxxxxx (0<=x<=1)

$COM=3<LF><ETX> -- #AUTOMATIC<LF><ETX> --

#MODE<LF><ETX> #AUTOMATIC=1 #PRI<LF><ETX> #PRI=1,2,3,4,5,6

Refer to MAC Operating Manual in the Technical part of this document for the description of the MAC module's command set.

"RS-232C" Port (for local management, without

ESM


6.6. Checking the Local RS-232C Port of the ESM module If the OSA 5548B SASE is equipped with an ESM, the RS-232C port on this module’s front panel provides the local RS-232C port. For managing the OSA 5548B SASE over this port, one needs to connect it to an IBM-compatible PC loaded with the Local Manager (LM) application. Please refer to the separate LM Operating Manual. If this software is not available, one can communicate with the ESM with a terminal emulator running on an IBM-compatible PC. A detailed description of the MML commands is provided in the LM User Guide. It should be noted that this method is not practical if one wants to take full advantage of all the management features of the ESM. However, it does allow the user to perform a quick functional check of the ESM.

Procedure:

Connect an IBM-compatible PC to the RS-232C port on the front panel of the ESM.

Set the parameters to 9600 baud, 8 characters, 1 stop bit, no parity

With a terminal emulator, execute the sequence of instructions given in the table below. Check the response. If the response is as indicated below, this means that the communication with the ESM is working properly.

Command

Response

Ctrl+B Ctrl+C SYNTAX ERROR



7. Specifications

7.1. Input Specification

INPUT INTERFACE UNITS (IIU) OSA 5548B accepts up to 6 Input Interface Units (IIU). Unused inputs are terminated with dummy load cards.

IIU Line Receiver Specification • Input: 0.064, 1, 1.544, 2.048 G.703-10, 5 or 10 MHz.

• Automatic detection of input frequency • Integral phase measurement capability. • Sine wave input level: 0.3 to 1.5 Vrms • Square wave input level: 1 to 5 Vpp • 75Ω (120Ω via external impedance adapter - not included)

Input Qualification Detection of the following criteria causes input changeover: - Loss of Signal (LOS) - XINMAX(3) limit exceeded on active input.

IIU 2.048 Mbit/s G.703-6 Specifications • Input: 2.048 Mbit/s G.703-6, HDB3 coded.

• Integral phase measurement capability. • 75Ω (120Ω via TEX-P or impedance adapter)

Input Qualification Standard G.703-6 IIU

Detection of the following criteria causes input changeover: - Loss of Signal (LOS) - Alarm Indication Signal (AIS) - Frame Alignment error (FA) - CRC-4 violations - XINMAX(3) limit exceeded on active input. - Detection of bits Sa4 to Sa8 in Time Slot 0 (optional). - Detection of SSM in Time Slot 0. (7)

IIU 1.544 MHz G.703-2 Specifications • Input: 1.544 Mbit/s G.703-2.

• Integral phase measurement capability. • 75Ω (100Ω via TEX-P or impedance adapter)

Input Qualification Standard G.703-2 IIU

Detection of the following criteria causes input changeover: - Loss of Signal (LOS) - Alarm Indication Signal (AIS) - Frame Alignment error (LFA) - Excessive error rate (≥1E-3)on FS or FT bit (ER)

GPS Input Interface 'GPS-I' General Characteristics • 1 or 2 modules can be added to the configuration.

• Also available with integral phase measurement capability • Each GPS-I replaces two input modules

Accuracy with BVA 8695 ('OM') 3 x 10-12 (long term) with or without Selective Availability. Input Validation Detection of the following criteria causes input changeover:

- Satellite signals not tracked - Antenna fault - XINMAX(3) limit exceeded on active input.

Communications Via RS-232C on front panel or remotely from SyncView™. (RS-232C is not available on GPS-I with phase measurement capability)


7.2. Inputs Management Input Selection

Input Validation Input validation criteria depend on input signal type. See paragraph on Input Interface Units.

Input Selection Modes Four operating modes are available :

a) Automatic: the input is selected according to a priority table

b) Manual: the input is selected manually by the user, and remains selected as long as the input is valid

c) Forced: the input is selected manually by the user, and remains selected whether the input is valid or not

d) Majority Decision: the input selection is based on the phase

measurements made on each input; if the frequency offset of an input exceeds a pre-defined limit relative to the majority, then the input is rejected; Majority Decision mode requires the ESM.

Input selection mode, input priority table, and majority thresholds are selectable via RS-232C using a local terminal or via SyncView™.

Max. Output Phase Change after Input Changeover

Phase build-out function cancels phase offsets between inputs. Output phase change: typically < 2 ns; exact value depends on τloop and Oscillator Module type.

IIU's PHASE MEASUREMENT Overview Continuous phase measurement performed independently

on each input interface unit, in real time. Measurements are non-intrusive. The phase measurement function requires the ESM.

Measurement Range Measurement range is ± 50 μs, resolution is 1 ns. Threshold is programmable via the equipment’s local interface (ESM 'RS-232C') or SyncView™.

Measurement Representation (4) MRTIE, TDEV and yavg (average fractional frequency) graphs can be displayed every 15 minutes, eight hours and 24 hours - locally using a PC with SyncView™ Local Manager or remotely from SyncView™ management system.

Alarming (4) Alarm thresholds for MRTIE, TDEV and yavg are programmable via Local Manager or SyncView™ management system.. If a threshold is exceeded, the OSA 5548B SASE will send a message to the Local Manager or to SyncView™.

Storage of Measurement Data (4) Measurement data is stored in the ESM for 45 minutes using 1 second sampling time, 1 day using 32 seconds sampling time, 3 days using 96 seconds sampling time.


7.3. Channels Characteristics TRACKING SUBSYSTEM

Type Tracking Oscillator Module (TOM) incorporating Digital Phase Locked Loop (DPLL).

Configuration Duplicated TOMs in a 1+1 configuration Jitter & Wander Filtering Characteristics

Exceeds ITU-T G.812 and ETS 300 462-4. Filter Bandwidth: 20 mHz to 20 mHz, user programmable. Gain peaking: < 0.2 dB

Loop Time Constant (t) Variable between 100 and 100,000 seconds (corresponds to filter bandwidth between 20 mHz and 20 μHz) to optimise filtering characteristics, programmable via RS-232C or the Management Port (e.g. with SyncView™).

Noise Generation Observation Period: MTIE: TDEV: 0.1 to 1 s 2 ns 0.3 ns 1 to 625 s 2E-9*τ1/2 3E-10*τ1/2 625 to 1000 s 50 ns 3E-10*τ1/2 1000 to 10000s 50 ns 10 ns

Relative TIE Monitoring (XINMAX)

Continuous relative phase measurement between the active input and the local oscillator. XINMAX(3) limit is programmable between 1ns and 50 ms. Input rejected after τloop/100 seconds if preset XINMAX(3) limit is exceeded.

OSCILLATOR MODULES Type OCXO 8665 BVA Configuration Duplicated modules in a 1+1 configuration Holdover Stability (at 25°C) 8665 std

< 2 x 10-10/day Typ. 1 x 10-10/day

after 30 days of continuous operation 8665 - G

< 1 x 10-10/day Typ. 5 x 10-11/day

after 30 days of continuous operation

< 2 x 10-11/day (6) Typ. 1 x 10-11/day

after 60 days of continuous operation

Initial Frequency Offset (with ideal input signal)

< 1.5 x 10-11 < 8 x 10-12

Stability Versus Temperature ± 1 x 10-9 (-5 to +45°C)

± 2 x 10-10 (-5 to +45°C)

Temperature Sensitivity 3 x 10-11/°C 3 x 10-12/°C Short Term Stability < 1 x 10-11

(0.2 - 10 s) < 2 x 10-12 (0.2 - 10 s)

Pulling Range (peak to peak) > 6 x 10-7 > 3 x 10-7 In-service adjustments None required None required Life time > 15 years > 20 years

CHANNEL CHANGEOVER Selection Via dual switching amplifier cards Type Automatic or manual using switches on front panel or via

RS-232C using local terminal or via the management system

Max. output phase change after channel changeover

< 15 ns, typically 7 ns


7.4. Outputs Specifications

MAIN OUTPUTS OSA 5548B accepts up to 8 Output Interface Units (OIU). OIUs have sixteen outputs each, for a possible total of up to 112 outputs (1+1 protection capabilities). RTUs provides re-timing (8) of 8 traffic channels each, for a possible total of up to 56 (depending on the wiring version). Unused outputs must be terminated with dummy load cards.

OIU 16 Outputs 2.048 MHz G703-10 Specifications • Outputs: sixteen at 2.048 MHz G.703-10, Sine wave

• Impedance: defined by the type of the associated Outputs Group (75Ω or 120Ω).

• Protection: defined by the type of the associated Outputs Group.

Output Qualification

Detection of the following criteria causes Alarm detection: - Loss of Input Signal (AL) - Loss of Output Signal (AL)

OIU 16 Outputs 2.048 Mbit/s G.703-6 Specifications • Outputs: sixteen at 2.048 Mbit/s G.703-6, HDB3 coded

• FRAME or MULTIFRAME formatted • Optional SSM transmission. (7) • Impedance: defined by the type of the associated Outputs

Group (75Ω or 120Ω). • Protection: defined by the type of the associated Outputs

Group. Output Qualification


OIU 16 Outputs 1.544 Mbit/s G.703-2 Specifications • Outputs: sixteen at 1.544 Mbit/s G.703-2

• Impedance: 100Ω, defined by the type of the associated Outputs Group (120Ω).

• Protection: defined by the type of the associated Outputs Group.

Output Qualification


OIU 16 Outputs 64 kbit/s Composite Clock

Specifications • Outputs: sixteen at 64 kbit/s composite clock • Impedance: 133Ω, defined by the type of the associated

Outputs Group (64 kbit/s/133Ω). • Protection: defined by the type of the associated Outputs



OIU 16 Outputs Synthesised Specifications • Outputs: sixteen at 1, 1.544, 5, or 10 MHz,

1.0 Vrms, Sine wave • Impedance: defined by the type of the associated Outputs

Group (50Ω or 75Ω). • Protection: defined by the type of the associated Outputs




RTU-E1 2.048 Mbit/s (8) Specifications • Inputs: eight at 2.048 Mbit/s G.703-6,

HDB3 or AMI coded • Outputs: eight at 2.048 Mbit/s G.703-6,

HDB3 or AMI coded • Output Frame structure: same as associated Input. • Input Frame buffer: two • Input Frequency Offset: max. ±4.6 ppm • Impedance: defined by the type of the associated

Outputs Group (75Ω or 120Ω). • Protection: Not applicable

Input / Output Qualification

Detection of the following criteria causes Alarm detection: - Loss of Input Signal (AL) - Loss of Output Signal (AL) - Reaching the max. slip rate (AL)

RTU-T1 1.544 Mbit/s (8) Specifications • Inputs: eight at 1.544 Mbit/s G.703-2

• Outputs: eight at 1.544 Mbit/s G.703-2 • Output Frame structure: same as associated Input. • Input Frame buffer: two • Input Frequency Offset: max. ±4.6 ppm • Impedance: 100Ω, defined by the type of the associated

Outputs Group. • Protection: Not applicable.

Input / Output Qualification

Detection of the following criteria causes Alarm detection: - Loss of Input Signal (AL) - Loss of Output Signal (AL) - Reaching the max. slip rate (AL)

Outputs Group Connectors Type • Unbalanced: female CEI 1.0/2.3 or CEI 1.6/5.6 or BNC or Type 43

• Balanced: D-type 9p female or BNO (Suhner type)

AUXILIARY OUTPUTS Expansion Outputs Used to drive Output Expansion Shelves

Specifications • Outputs: 2 x 2.048 MHz, 0.5 Vrms/50Ω • Connector: BNC female • Sine wave

1PPS Outputs (5) Directly provided by the GPS-I Receiver Modules Specifications • Outputs: 1 pps, AC-MOS/50Ω

• Connector: BNC female • 20μs Pulse Width • ≤ 20ns Rise Time • One output per GPS-I Receiver

IRIG-B Outputs (5) Directly provided by the GPS-I Receiver Modules Not available with GPS-I2

Specifications • Outputs: IRIG B, 600Ω • Connector: BNC female • 1 kHz carrier • 5.0 Vpp high, 1.5 Vpp low, no load • One output per GPS-I Receiver


7.5. Remote Functions Specifications MONITORING & ALARMS CONTROLLER CARD 'MAC'

User Interface RS-232C on 9 way D type connector, male. Protocol TTY. Communications Parameters 1200, 2400, 4800 or 9600* baud, 7 or 8* bits, 1 or 2* stop

bits, parity: none*, even or odd. (*): Factory setting

Event Log Non-volatile memory stores 128 events with date and time stamp on a FIFO (First in First Out) basis.

Status Reporting Events & alarms are reported spontaneously to the RS-232C port

Shelf Inventory User definable inventory, 42 lines, 20 ASCII characters per line. Alarms LED indicators are provided on all module front panels.

Summary of shelf alarms provided on F3MAC front panel. Electrical Outputs 8 relay contacts

(Icmax=250mA; Vmax=60V; Pdmax=3W). Contacts available from a 25 way D type connector.

Alarm Output Masks Alarm masks settable for each alarm output via RS-232C. OPTIONAL EMBEDDED SYSTEM MANAGER (ESM)

Overview ESM is a plug-in module that provides a gateway to the management system, SyncView™. It provides the following functions:

• Spontaneous alarm reporting • Equipment configuration • Alarm and event log • Equipment configuration log • Storage and handling of synchronisation performance

data in real time. • Generation of MRTIE, TDEV and yAVG curves • Setting of performance thresholds • Security management • Setting of SSM thresholds for the IIUs and OIUs (7) • Majority Decision for synchronisation input selection • Many other functions

The ESM interface is based on an ITU-T Man-Machine Language (MML) protocol.

Local Terminal Interface RS-232C Remote Interface X.25 or ISDN or Ethernet Electrical Outputs 6 relay contacts

(Icmax=250mA; Vmax=60V; Pdmax=3W). Contacts available from a 25 way D type connector, male..


7.6. General Specifications POWER SUPPLIES

Configuration Fully redundant power supply converters Input Voltage 36 to 72 VDC floating input (48 VDC variant)

98-132 VAC/50-60 Hz input (115 VAC variant) 196-264 VAC/50-60 Hz input (230 VAC variant)

Power Consumption (Typical values for fully equipped system)

Warm-up : 150W with OCXO 8665, 160W with BVA Steady state : 130W with OCXO 8665, 140W with BVA

ENVIRONMENTAL Environment Storage: as specified in ETS 300 019-1-1, class 1.1

Transportation: as specified in ETS 300 019-1-2, class 2.2 Operation: as specifies in ETS 300 019-1-3, class 3.2

Operating Temperature Range -5° to +45°C Storage Temperature -20° to +50°C Humidity 5 to 95% non condensing.

EMC, ESD & SAFETY - CE Mark EMC & ESD Certified to EN50081-1 and EN50082-1

Susceptibility to IEC 801 parts 2, 3, 4, 5 and 6 Safety Conformance to EN61010-1

MECHANICAL Mounting 19" rack mount. Size h x w x d mm (in.)

19" 6U: 266 x 483 x 265 mm (10.5 x 19 x 10.43 in.)

Weight ~ 17 kg (37 lbs) excluding packing. Connector Access Rear access.

Notes:

(1) Unterminated input requires externally mounted TEX-P (passive device, OSA Part no. 942.089.035)

(2) Input and output impedance must be specified at time of order (3) XINMAX = Programmable limit for relative phase-time (4) ESM option must be fitted for phase measurement and majority decision functions. (5) Applicable only if GPS-I option is fitted. (6) BVA: 95% of these devices attain 5 x 10-12/day stability after 12 months of continuous operation. (7) SSM operation is available from release 2.1. (8) Re-timing operation is available from release 2.2.


8. Maintenance No periodic maintenance is required for this unit. Should a degradation of the specifications (output levels, phase noise, etc..) or a malfunction be noticed, the operator can simply replace the defective module by with a spare board of identical function. No subsequent readjustment is required following the replacement of any module within the equipment.


9. Preventive Maintenance This system does not require any routine maintenance. However, in order to ensure correct functioning of the modules operating in stand-by mode, the following preventive maintenance is recommended.


9.1. Test of the signalling LEDs Checking the operation of the LED indicators is done with the switch on the front panel of the MAC alarm module (A15). Pushing the switch to the lower position activates all LEDs of the SASE 5548B - i.e. all LEDs should light up.

'MAC' Modulelocation


9.2. Testing the redundant modules Switching between channels is done with the switches located on the front panels of the 'Phase-Stepper Switch' modules A22 and A23 (see section 2.6.13). The functioning of a channel can be checked by configuring it as the priority channel. This is achieved by pushing the relevant switch downwards.

9.3. Calibration of the oscillator The TOM module features automatic calibration of its local oscillator. Therefore no calibration is needed during the full lifetime of the system.

Phase-Stepper Switcheslocation


10. Troubleshooting In case of module failure (visual alarm or alarm message on local port or on SyncView™ management system), the user can simply replace the faulty module with a spare module without any restrictions. It is not necessary to switch off the power supply during the replacement procedure. No adjustments are needed after a module has been replaced.


10.1. Description of the LEDs/Faults diagnostic

10.1.1.Input Interface Unit "IIU 2.048 Mbit/s G703-6"

LED OP

Is OP LED lit?

Normal condition

END

YES NO

Is REF LED lit?

Is AIS LED lit?

Is FA LED lit?

Is ER LED lit?

NO

NO

NO

MODULE FAILURE

END

NO

See the relevant LED organigram

YES

YES

YES

YES

LED REF

Is REF LED lit?

Normal condition

END

YESNO

NO

MODULE FAILURE

END

YESIs OP LED lit?

Check the following points: - Input signal - Input level

- Connection

LED AIS

Is AIS LED lit?

Normal condition

END

YESNO

The input signal is carrying an AIS signal (all

ones).

Check the signal generator.

NO

MODULE FAILURE

YESIs OP LED lit?

LED FA

Is FA LED lit?

Normal condition

END

YESNO

The input signal is affected by a

Frame Alignment error.

*


*: Active criteria: At least 3 wrong consecutive synchronisation words (time slot zero, even frames) Inactive criteria: At least 2 correct synchronisation words

LED ER

Is ER LED lit?

Normal condition

END

YESNO

The input signal is affected by an

Error Rate. *


*: Active criteria: Corresponds to the rate of wrong synchronistion words detected, measured over 5 sec. ER limit >1E-03 (1 over 1000).

I i i i E ER d l 5


10.1.2.Input Line Selector 'ILS'

LED OP

Is OP LED lit?

Normal condition. This module is

active

END

YES NO

Is the AL LED lit?

Normal condition. This module is on

stand-by

NO

MODULE FAILURE

YES

LED AL

Is AL LED lit?

Normal condition

END

YESNO

MODULE FAILURE

LEDs A[1..6]

Is A 1 LED lit?

END

Is A 2 LED lit?

Is A 6 LED lit?

NO

NO

NO

Input interface 1 selected for channel A

synchronisation


synchronisation


synchronisation

YES

YES

YES

Is AL LED lit?

MODULE FAILURE

YES NO

No valid input reference

Is OP LED lit?YES

This module is on stand-by

NO

LEDs B[1..6]

Is B 1 LED lit?

END

Is B 2 LED lit?

Is B 6 LED lit?

NO

NO

NO

Input interface 1 selected for channel B

synchronisation


synchronisation


synchronisation

YES

YES

YES

Is AL LED lit?

MODULE FAILURE

YES NO

No valid input reference

Is OP LED lit?YES

This module is on stand-by

NO


10.1.3.Output Interface Modules "OIU 16 Outputs ……"

MODULE FAILURE

LED AL

Is AL LED lit?

Normal condition

YESNO

END

Is the previous module output in

failure?

Check the previous module.

NO YES


10.1.4.Management and Alarms Controller "MAC" LED

ALARM

Is ALARM LED lit?

Normal condition

YESNO

END

Alarm detected. Check the LEDs

below.

LED POWER1 / POWER2

Is POWER 1 or POWER 2 LED lit?

Normal condition

YESNO

END Is the D LED lit?

Both the Direct and Memorised LEDs

should be lit.

YES

Check the relative fuses, and the power source.

END

NO

The power converter is back in normal operation, but has

been in failure.

Check the power source, for

intermittent failure.

Are IN LEDs lit?

Normal condition

YESNO



should be lit.

YES

Check the input modules.

END

NO

Check the input modules, for


LED IN

Are SEL LEDs lit?

Normal condition

YESNO



should be lit.

YES

Check the Input Line Selector

modules.

END

NO

Check the Input Line Selector modules, for intermittent

failure.

LED SEL

Are CH 1 LEDs lit?

Normal condition

YESNO



should be lit.

YES

Check Channel 1 modules.

END

NO

Check Channel 1 modules, for


LED CH 1

Are CH 2 LEDs lit?

Normal condition

YESNO



should be lit.

YES

Check Channel 2 modules.

END

NO

Check Channel 2 modules, for


LED CH 2

Are OUT LEDs lit?

Normal condition

YESNO


Both the Direct and Memorised LEDS

shouldbe lit.

YES

Check Output modules.

END

NO

Check Output modules, for intermittent

failure.

LED OUT

Are ESM LEDs lit?

Normal condition

YESNO



should be lit.

YES

Check ESM module.

END

NO

Check ESM module, for intermittent

failure.

LED ESM


10.1.5.Power Supply Unit "PSU"

LED

Is green LED lit?

Normal condition

YES NO

END

Check relative fuse and external power

source.


10.1.6.Tracking Oscillator Module 'TOM'

Check the output signal of the previous

module.

LED IN

Is IN LED lit?

Normal condition

YESNO

END

The input signal is detected invalid..

Is the previous module in

alarm?

YES

Check the previous module.

MODULE FAILURE

NO

END

LED OUT

Is OUT LED lit?

Normal condition

YESNO

END

The output signal is detected invalid..

Is the oscillator external to the

TOM?

YES

MODULE FAILURE.

NO

Is there an alarm on the external

oscillator?

MODULE FAILURE

NO

END

Check the external oscillator.

YES

LED FR

Is FR LED lit?

Normal condition

YESNO

END

The OCXO is in hold over mode.

YES NO

Check the IN LED

Is IN LED lit?

Normal condition. The input is invalid,

the OCXO is in hold over mode.

Is input signal affected by large

variations?

NO

MODULE FAILURE.

END

Excessive phase or frequency variations can

cause hold over mode.

YES

Check quality of input reference

WARM-UP MODE? NO

Normal condition. The module is in WARM-UP

MODE

YES

LED OOL

Is OOL LED lit?

Normal condition

YESNO

END

The OCXO control voltage is Out Of

Limits.

Is input signal affected by large

variations?

NO

The OCXO voltage control is limited by

aging.

END

Excessive phase or frequency variations can cause an OOL

detection.

YES

The OCXO needs to be changed or

readjusted if function available. Check quality of

input reference

LED POWER

Is POWER LED lit?

Normal condition

YESNO

END

Internal power supply has failed.

MODULE FAILURE


10.1.7.Oscillator Module 'OM'

MODULE FAILURE.

LED OOL

Is OOL LED lit?

Normal condition

YESNO

END

Check the reference input signal of SASE

NO YESEND

Check the frequency offset.

Is the frequency offset out of

specification?

The OCXO voltage control is Out Of Limits due to the

quartz aging.

MODULE FAILURE

LED Θ

Is Θ LED lit?

Normal condition

YESNO

END

Wait at least 30 minutes for temperature stabilisation..

NO YESEND

The OCXO internal temperature is not

within limits .

Has the equipment just been

powered-up?

MODULE FAILURE

LED OUT

Is OUT LED lit?

Normal condition

YESNO

END

The output signal is detected invalid..


10.1.8.Phase-Stepper Switch 'PSS'

LED OP

Is OP LED lighting?

Normal condition. This module is in the active channel.

END

YES NO

Normal condition. This module is in

the stand-by channel.

LED PRIOR

Is PRIOR LED lit?

YES NO

Normal condition. This module is in

the stand-by channel.

Is OP LED lit?YES

Normal condition. This is the priority

channel and is active.

END

This channel is the priority one and is not

active due to local alarm (BS or AS).

NO

LED BS

Is BS LED lit?

YESNO

END

Normal condition.

Is the previous module in alarm?

NO

MODULE FAILURE

YES

Check the previous module

LED AS

Is AS LED lit?

YESNO

END

Normal condition.

YES Is AS LED still lit?

MODULE FAILURE

Alarm detection possibly caused by spike parasite, back

to normal mode

NO

Change priority to operating channel

by pressing its front pannel switch.

Change priority back to this channel.

LED OOL

Is OOL LED lit or flashing on/off?

Normal condition

YESNO

END

The module is correcting the

phase.

LED HOLD

Is HOLD LED lit?

YESNO

END

Normal condition.

Is the switch on front panel on hold

position?

This position is used only for maintenance

purposes. Return switch to center

position.

MODULE FAILURE

NOYES

Δϕ

Δϕ


10.1.9.Embedded System Manager "ESM"

LED AL

Is AL LED lit?

Normal condition

YESNO

END

MODULE FAILURE


11. Warranty This Oscilloquartz product carries a warranty which commences from date of despatch from factory. Unless agreed otherwise or stipulated differently on the original acknowledgement of order, the duration of the warranty is 24 months. It applies to demonstrably faulty material or poor workmanship, but excludes batteries. Oscilloquartz shall bear only the cost of repair or replacement in it's own works. Should this not be possible for reasons beyond our control, all additional costs will be for the customer’s account. Repairs under warranty carry either the balance of the original warranty or a six months warranty, whichever is longer. Damages resulting from natural wear, improper maintenance, failure to observe the operating instructions, excessive strain, unsuited consumption material, improper environmental and mounting conditions are excluded from this warranty. The warranty expires if the customer or a third party modifies or repairs the product without Oscilloquartz’s prior written consent or if the customer does not take immediate steps to prevent the damage from becoming more serious; likewise, if insufficient time is provided for repair or replacement. The customer will not be entitled to other warranty claims. Thence, Oscilloquartz is not liable for consequential damage.

OSCILLOQUARTZ S.A. NEUCHATEL / SWITZERLAND

April 1997


12. DEFINITION OF TERMS AND SYMBOLS

DPLL

Digital Phase Lock Loop

fo

Oscillator Output Frequency

fc

Cut-off Frequency

Jitter

Short-term non-cumulative variations of the significant instants of a digital signal form their ideal positions in time, expressed in seconds or in UI (unit interval).

τ or Tau

Loop Time Constant

Wander

Long-term non-cumulative variations of the significant instants of a digital signal form their ideal positions in time, expressed in seconds or in UI (unit interval).

x(t)

Offset of phase-time between two signals in function of time, expressed in seconds

XO

Crystal Oscillator

xin

Phase-time difference at the input of the digital PLL filter (PI controller)

y(t)

Fractional frequency offset, normalised instantaneous offset from a reference, in function of time.


13. DOCUMENT HISTORY Project Nº : 5548B-1 Document Type : OPERATING MANUAL Version : English Author : OSA Desaules Marc Revision : I Last Up-date : 30.08.2006 Creation : 30.05.1997 DATE REVISION CORRECTIONS 1. 30.05.97 - Creation 2. 13.10.97 A Page 22, correction of the front panel. Page 27, adding MAC 2 layout. Page 46, new default Tau Loop values. Page 53, adding MAC 2 electrical outputs. 3. 20.02.98 B Correction typing mistakes page 15, "942 082 085.xx" and "942 082 086.xx". Support for IIU 942.085.066. Support for OIU 942.085.192. Support for OIU 942.085.193. Support for BNO type Outputs Group. 4. 11.03.98 C Support for OM 942.082.070.01. 5. 15.06.99 D Elimination of the personnalisation fields -> full generic document. Support for OM 942.082.072.01. Page 48, new default Tau Loop values (DM 3448). Page 45, Sub-D pin-out correction. 6. 17.08.99 E Page 42, Sub-D pin-out correction. 7. 02.07.2001 F - Add release descriptions. - Support for OM 942.082.071.21. - Add support for RTU. - Add support for GPS-I2 - Precise the type of connectors (male/female) 8. 22.02.2002 G - Pages 16-18, 41, modifications about ESM model availability (release). - Sub-D 25p pin-out corrections. 9. 04.06.2004 H - Add PSU frequency range 10. 30.08.2006 I - Update GPS Antenna description and installation

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