ALCOMA ALxxF Microwave Radio IDU Users Manual

ALCOMA Proprietary of 16

ALxxF Microwave Radio Indoor Unit (IDU)

Users Manual

Revision 2 1 June 2009

ALCOMA spol. s r.o.

Habartovska 313 152 00 Prague 5

Tel: +420-602619655


Table of Contents 1. ALXXF PRODUCT DESCRIPTION 3

1.1. Overview 3 1.2. Front Panel Interfaces 7

1.2.1. T1/E1 Ports.............................................................................................................................. 7 1.2.2. Ethernet Transport Ports.......................................................................................................... 7 1.2.3. Ethernet Management Ports .................................................................................................... 8 1.2.4. Overhead/Hot Standby Interface ............................................................................................. 8 1.2.5. Command Line Serial Interface .............................................................................................. 9 1.2.6. DC Power ...............................................................................................................................10 1.2.7. ODU Interface........................................................................................................................11

2. SETUP AND OPERATION 13 3. CLI TEXT MENU CONTROL AND STATUS SOFTWARE INTERFACE 15


1. ALxxF Product Description

1.1. Overview The ALxxF serves as the Indoor Unit of a point-to-point microwave radio system designed for operation in the 7 to 38 GHz radio frequency band. Key features and functions are as follows:

• Line interface and conditioning functions necessary for transport of up to four PDH T1/E1 channels

• Ethernet transport via two front panel 100BaseT RJ-45 ports. The IDU can be configured for standalone Ethernet transport, or a combination of T1/E1 and Ethernet transport. VLAN security features and Ethernet port rate controls.

• Digital modem functions with configurable modulation modes of QPSK, 16QAM, 32QAM, 64QAM, 128QAM and 256QAM.

• Configurable forward error correction with settable interleaver depth (latency)

• Management interfaces include front panel RS-232 serial port and two Management Ethernet ports and Web based GUI interface.

o Web based security user authentication o Advanced link performance monitoring, including data log and

event logs o Downloadable firmware upgrade feature via Ethernet

management ports o Link status display of local and remote terminals o Local and remote control of terminals via Ethernet management

ports o Software selection of multiple versions of ODU’s

• On-board Ethernet Switch together with dual management Ethernet ports supports daisy-chaining of Ethernet Management

• Overhead admin serial channel interface (transported as side-channel over the link)

• SNMP alarm features and user settable heartbeat for use with trap server.

• Two FormC general purpose relays. Two Alarm Bi-level inputs

• Hot Standby control and status interface allows for Protected Mode operation.


• Wide-mouth 21 to 60V DC Power interface is configurable via internal switch for negative or positive voltage operation1

• All Outdoor Unit (ODU) interface signals are multiplexed onto front-panel N-type connector interface

• Front panel LEDs indicate Power-on, Alarm and Fault status

1 Prototype DC power polarity configured via jumpers on Power Converter Board. Production version will replace jumpers with slide switch.


Signal Processing

µP Ethernet Switch

E1/T1LIU

Quad Ethernet RJ-45 Ports

Quad E1/T1 RJ-48 Ports

Quad Magnetics

Craft (DB-9)HSBY/Aux (DB-26)

3 3

Alar

m B

i-lev

el In

putsPower

Conversion

DC Power

Quad Magnetics

+V -V

GN

D

Relay

Rel

ay C

ontro

ls

Adm

in. O

H S

eria

l Cha

nnel

HSB

Y I/O

2 2 4

Proc

Bus

MII

Cnt

rl/S

tatu

s

Dat

a I/O

MDC

DAC

ADCBPF

BPF

BPF

BPF

LPF

ASK Cmd Mod

ASK Tlm Demod

ODU I/F (N-Type)

Exp

ansi

on

Inte

rface

MII

MDC

Figure 1 ALxxF Functional Block Diagram


ODU

DC PowerOH/HsbyModem

T1/E1P1

T1/E1P2

T1/E1P3

T1/E1P4

Eth1

Eth2

EthMgmt

EthMgmt

PowerAlarmFault

CLI

F1 F2

Figure 2 ALXXF Front Panel


1.2. Front Panel Interfaces

1.2.1. T1/E1 Ports

The T1/E1 ports are 8-pin modular jacks with standard RJ-48 pinouts as shown in Figure 3 and Table 1 below. Transport mode is software configurable to support one to four T1 channels or 1 to 4 E1 channels. Lines are matched to 100 ohm in T1 mode and 120 ohm in E1 mode.

Figure 3 Pin Definition for 8-pin Modular Jack (as seen looking into the port)

Pin Signal Name 1 RX, Ring, - 2 RX, Tip, + 3 Shield/Return/Gnd4 TX, Ring, - 5 TX, Tip, + 6 Shield/Return/Gnd7 NC 8 NC

Table 1 T1/E1 RJ-48 Pinout

1.2.2. Ethernet Transport Ports

The two Ethernet transport ports (Enet-1 and Enet-2) provide 10/100BaseT interfaces with standard RJ-45 pinouts. When the IDU is properly configured, the IDU provides transport of Ethernet frames ingressed at these ports over the link to the far side radio. An internal Ethernet switch also provides layer 2 switching functions between these two ports and the far side terminal. The Ethernet PHYs provide MDI/MDI-X cross-connect with auto-detect, so both straight-thru and cross cables are accommodated to any other 10/100 Base-T interface. Ethernet transport is configurable up to 130 Mbps.

Note that Ethernet transport will be enabled with a coming firmware update.


1.2.3. Ethernet Management Ports

The two Ethernet management ports (Mgmt-1 and Mgmt-2) provide 10/100BaseT interfaces to the IDU’with standard RJ-45 pinouts. These ports allow management access to the IDU’s internal CPU. An internal Ethernet switch also provides layer 2 switching functions between these two ports and the far side terminal. The Ethernet PHYs provide MDI/MDI-X cross-connect with auto-detect, so both straight-thru and cross cables are accommodated to any other 10/100 Base-T interface.

Note that Ethernet-based management is not yet enabled on the prototypes. These functions will be enabled with a future firmware update.

1.2.4. Overhead/Hot Standby Interface

The Overhead and Hot Standby signals are provided over a DB-26 interface with connector pinouts and signal assignments as defined in Figure 4 and Table 2 below.

1

19

9

26

Figure 4 Pinout for High-density DB-26 Connector (as seen looking at front panel)


Pin Signal Name Description 1 Chassis Ground Ground 2 Aux Serial Receive Aux Serial Channel Rx Data (to IDU) 3 Hot Standby 5V Power 5V Power to HSBY Shelf 4 Hot Standby SPI MISO SPI communication bus to/from HSBY Shelf 5 Chassis Ground Ground 6 Hot Standby Serial Transmit Serial communication to HSBY Shelf 7 Hot Standby Shelf Present HSBY Shelf present signal 8 Relay 2 COM Relay 2 COM pin 9 Relay 1 NC Relay 1 NC pin

10 Aux Serial Transmit Aux Serial Channel Tx Data (from IDU) 11 Chassis Ground Ground 12 Hot Standby SPI Clock SPI communication bus to/from HSBY Shelf 13 Hot Standby 3.3V Power 3.3V Power to HSBY Shelf 14 Hot Standby Serial Receive Serial communication from HSBY Shelf 15 Chassis Ground Ground 16 Aux Alarm Input 2 Bi-level alarm 2 input 17 Relay 1 NO Relay 1 NO pin 18 Relay 2 NC Relay 2 NC pin 19 Chassis Ground Ground 20 Hot Standby SPI Sel SPI communication bus to/from HSBY Shelf 21 Hot Standby 5V Power 5V Power to HSBY Shelf 22 Hot Standby SPI MOSI SPI communication bus to/from HSBY Shelf 23 Chassis Ground Ground 24 Aux Alarm Input 1 Bi-level alarm 1 input 25 Relay 2 NO Relay 2 NO pin 26 Relay 1 COM Relay 1 COM pin

Table 2 Overhead/Hot Standby Interface Connector Pinout

1.2.5. Command Line Serial Interface

The CLI interface presents a standard three-wire RS-232 DCE interface on a female DB-9 connector with connector pinouts and signal assignments as defined in Figure 5 and Table 3 below. The CLI interface is configured as follows:


• Data rate: 57600 bps • 1 start bit • 8 data bits • No parity • 1 stop bit

15

69

Figure 5 Pin Definitions for Female 9 Pin Sub-D Connector (as seen by looking at front panel)

Pin # Signal Name Direction Signal Description

1 NC 2 TXD Out Transmit Data (from IDU) 3 RXD In Receive Data (to IDU) 4 NC 5 GND N/A Ground 6 NC 7 NC 8 NC 9 NC

Table 3 CLI Connector Pinout

1.2.6. DC Power

DC Power is provided via a three terminal connector, as indicated in Figure 6. A switch internal to the IDU must be set to the desired polarity.

For positive voltage operation: • Internal power switch must be set for “+24V” operation • Connect positive terminal of external supply to “+V” terminal of

ALXXF • Connect negative terminal of external supply to “-V” terminal of

ALXXF. • Connect negative terminal of external supply to “GND” terminal of

ALXXF.


For negative voltage operation: • Internal power switch must be set for “-48V” operation • Connect negative terminal of external supply to “-V” terminal of

ALXXF • Connect positive terminal of external supply to “+V” terminal of

ALXXF. • Connect positive terminal of external supply to “GND” terminal of

ALXXF.

+V -V GND

Figure 6 DC Power Connector (as seen from front panel)

Two fuses are accessible from the front panel. One fuse (labeled F1 in Figure 2) provides short circuit protection when the IDU is configured for positive voltage operation; the second fuse (F2) provides short circuit protection when configured for negative voltage operation. In both cases, the fuse protects both the IDU and the ODU. The fuse holders accommodate standard 5 x 20 mm fuses. ALXXF units are delivered with 7A fast-acting fuses installed.

A simplified block diagram of the power converter is provided as Figure 7, depicting the function of the polarity selection switches and the positioning of the fuses. In addition to the protection fuses, the production version will also include electronic protection circuitry designed to protect against certain kinds of short-circuit events without resulting in blowing either fuse. (Note that this electronic over-current protection is not yet active in the Prototype Units.)

1.2.7. ODU Interface

The N-Type ODU interface multiplexes the following signals: • DC power (with polarity determined by internal switch setting as

discussed in Section 1.2.6). • Transmit modulated IF signal at center frequency 350 MHz (to

ODU) • Receive modulated IF signal at center frequency 140 MHz (from

ODU) • OOK ODU command signal at 5.5 MHz center frequency • OOK ODU telemetry signal at 10 MHz center frequency


Isolated 5V Converter

Secondary Converters

GND

-V

+VPol Sense/ Inrush

Limiting

F2

F1 Pol Sense/ Inrush Limiting/ OV Prot.

DC to ODU

DC Supply to IDU

Figure 7 ALXXF Power Converter Simplified Block Diagram


2. Setup and Operation

To setup a link for operation, proceed with the following steps at each end of the link:

1. Prior to operation, make certain that IDU is configured (via internal switch setting) to DC Power polarity required by the ODU. The factory configuration of the IDU is indicated via marking on the back of the IDU. WARNING: FAILURE TO FOLLOW THIS STEP MAY DAMAGE THE ODU.

2. Prior to connecting DC power to the IDU, connect the IDU and ODU via a 50 ohm coaxial cable.

3. Connect the CLI port to a terminal emulator with settings as defined in Section 1.2.5.

4. Connect an external DC power supply to the IDU front panel interface. Make certain that the polarity of the external supply matches the configuration of the IDU (see Section 1.2.6 for details).

5. Configure the IDU to the desired transport mode via the text menu interface, as described in Section 3. For example, to configure the IDU for Two T1 Channel Transport, make the following menu selections:

• From the Main Menu select “1) IDU Control / Status” • From the IDU Control / Status Menu, select “1) Link Configuration” • From the Link Configuration Menu, select “2” for 2DS1 (T1)

operation. All aspects of the IDU (line interfaces, modulation mode, FEC, etc…) are automatically configured from this selection.

6. Enter “X” repeatedly to return to the Main Menu.

7. Configure the ODU as desired: • From the Main Menu select “2) ODU Control / Status” • From the ODU Control / Status Menu, configure Tx Power, Tx

Channel, and Rx Channel as desired, then enable Tx Power Enable. (Note that the software is currently designed such that ODU PA Tx must be explicitly enabled. The software can be modified to automatically enable the ODU Tx PA upon turn-on if desired by EMS.)

When both ends of the link have been configured to the same (or consistent) configurations, acquisition is automatic on both sides. Many aspects of the IDU status are available via the “Link Status” selection under the “IDU Control /


Status” menu. ODU status is available via the “Display Status” menu under the ODU Control / Status menu. The table shows the total number of E1’s that can be configured, total data speed for each type of modulation and bandwidth are shown. All bandwidth not used for E1 transport can be assigned for Ethernet transport with the iAM-ALXXF IDU. The Ethernet looks like a single port to the modem. The Ethernet switch can be programmed to rate limit any, each, or all of its ports. If you don’t limit the input rate, it will process what it can based on the modem configuration.

B CHANNEL = Channel Bandwidth (MHz) Modulation 7.0 14.0 28.0

QPSK 4E1

8Mbps 4E1

16Mbps 4E1

34 Mbps

16 QAM

4E1 16Mbps

4E1 34 Mbps

4E1 68 Mbps

32 QAM 4E1

34 Mbps 4E1

68 Mbps

64 QAM 4E1

130 Mbps


3. CLI Text Menu Control and Status Software Interface

The prototype Command Line Interface is a simple scrolling Text Menu interface with structure as depicted in Figure 8. To proceed down any path of the menu hierarchy, enter the indicated alphanumeric followed by the Return key. From anywhere in the menu, proceed back up the hierarchy by entering the letter “X” followed by the Return key.


Main Menu:1) IDU Control / Status2) ODU Control / Status3) Loopbacks4) BER Testing5) Test Signals6) Utilities

IDU Control / Status:1) Link Configuration2) Link Status3) Enable Aggreate Loopback4) Enable Aggreate BERT5) Expert Menu6) Save Current ConfigurationX) Exit

1

Link Configuration:Capacity Mod Type

1) 1DS1 QPSK2) 1DS1 16QAM3) 1DS1 32QAM4) 1DS1 64QAM

5) 2DS1 16QAM6) 2DS1 32QAM7) 2DS1 64QAM

8) 3DS1 32QAM9) 3DS1 64QAM

10) 4DS1 64QAM

21) 1E1 QPSK22) 1E1 16QAM23) 1E1 32QAM24) 1E1 64QAM

25) 2E1 16QAM26) 2E1 32QAM27) 2E1 64QAM

28) 3E1 32QAM

1

Link Status:1) Modem State2) Modem Configuration3) Modem Operational Status4) Modem Link Quality Status5) Modem BERT Status6) Loopback/BERT Status7) LIM A Operational Status8) LIM B Operational Status9) LIM A Link Quality StatusA) LIM B Link Quality StatusB) Overhead Link Quality StatsC) Demod StatusD) RS Decoder StatusE) ConstellationW) WeightsR) Reset StatisticsX) Exit

2

2 3

Loopbacks:1) Modem Loopback Mode2) Lim A Loopback Mode3) Lim B Loopback ModeX) Exit

LIM Loopback:1) Disable Loopback2) Line-Side Digital Loopback3) Radio-Side Analog Loopback4) Radio-Side Digital LoopbackX) Exit

2 or 3 (Enter Line # 0)

Test Signals:1) Transmit single tone2) Transmit two tone3) Sweep single tone4) Sweep single tone and capture ADC5) Sweep single tone and capture loopback6) Sweep single tone and capture receiver7) Capture ADC8) Capture loopback9) Capture receiverA) Capture receiver (Symbols)X) Exit

5

BER Testing:1) LIM A BERT Tx Mode2) LIM B BERT Tx Mode3) LIM A BERT Rx Line Select4) LIM B BERT Rx Line SelectX) Exit

4

Utilities:1) LEDs2) REAL TIME CLOCK3) I2C DEVICES4) IF PROCESSOR5) MEMORY DUMPS6) MODEM TEST7) FLASH UTILITIESX) Exit

6

ODU Control / Status:1) Set TX Enable2) Set TX Power3) Set TX Frequency4) Set TX Channel5) Set RX Frequency6) Set RX Channel7) Display VersionS) Save SettingsR) Restore FactoryU) Update StatusX) Exit

Figure 8 CLI Text Menu Description

ALCOMA ALxxF Microwave Radio IDU Users Manual

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