4448 Relay 8x1 Switch FV 1.00 · 2012. 10. 29. · 3 Configuration 9 3.1 Configuring an 8x1...

Contents

1 Introduction 1

2 Installation 3

2.1 Rear connectors and pin-out 4

2.2 Crosspoint control 7

3 Configuration 9

3.1 Configuring an 8x1 switcher 11

3.2 Selecting power-down mode 11

3.3 Source expansion 12

3.4 Level expansion 15

3.5 Example expansion cabling 17

4 Trouble shooting 19

5 COSMOS status monitoring 21

6 Specification 23

7 Ordering information 25

Technical Manual Issue 1.00

4448 Relay 8x1 Switch

1 Introduction

The 4448 is an eight input, one output relay switcher designed to fit in the 1050 3Uand 1051 1U ICON Pro-Bel modular product rackframes. When fitted to the 1050 rackframe the module occupies 20mm of rack width. The module is intended for usewith RS232, RS422 and other signals up to 5Mbit/s in balanced mode.

It provides a solution for small ancillary or monitoring matrices with the benefit ofsimple button per crosspoint control.

The architecture of the modules allow crosspoint outputs to be bussed together toallow switchers above eight inputs to be built. For example a 64x1 system requireseight modules. In addition the switcher may be configured with other modules inthe Pro-Bel range to form married multi-level matrices.

Vertical interval switching can be achieved by feeding one or more 4448 moduleswith a field trigger from another Pro-Bel 8x1 switcher, such as a 3438 or 3408 whichcan produce a vertical interval trigger from a video signal.

An onboard rechargeable battery provides retention of crosspoint settings afterpower loss.

Characteristics of the 4448 module are:

• easy expansion up to 64 inputs in half rack width

• flexible control, with button per crosspoint or binary addressing

• synchronised switching via an externally supplied field trigger

• standalone and master slave configuration

• four wire and two wire data communications compatibility

• crosspoint memory via battery backup

• LED crosspoint tally display

• flexible power-down default

• compatible with Pro-Bel COSMOS status monitoring

1 chapter 1 Issue 1.00

4448

Technical Manual chapter 1 2


The 4448 8x1 relay switch

CONTROLINPUTS AND

LAMP SUPPLY

DC POWERAND

STATUS DATA

SIG / CNTLEXP IN

SIG / CNTLEXP OUT

BINARYCONTROL

OUT

8x1 (A+B)RELAY

SWITCH

SIGNALINPUTS

SIGNALOUTPUTS

BINARYCONTROL IN

CONTROLLOGIC

POWERREG

BATT

LEVEL B

STATUSMON

LEVEL A

LEVEL B

LEVEL A

EXPANSIONCONFIG

2 Installation

The 8x1 relay switcher consists of a 4448 ICON module which takes a single cardposition in either a 1U 1051 or a 3U 1050 Pro-Bel modular rackframe. It uses the20mm K4448-2 rear connector to provide single balanced pairs and the 20mmK4448-2W rear connector to provide access to both balanced pairs. For module andrear connector installation instructions please refer to the appropriate ICON rackframe section of the manual.


4448

TP1 0V

POWER

PL13

PL13

PL21

PL22

EXP OUT

PL7

OFF

ON

CHAN SEL

1

2

3

4

5

6

7

8

�4448

BATTERY

EXPANSION IN

L

E

V

E

L

A

B

I

N

A

R

Y

PL14

L

E

V

E

L

B

L

E

V

E

L

A

B

I

N

A

R

Y

L

E

V

E

L

BEXP FT

PL6

OFF

ON

CLK I/O

PL9

BRK

MAKE

B EXP I/O

PL8

A EXP I/O

PL15

PL11

PL10

PL23

OFF

ON

FT LOGIC

PL5

BUTTON

BIN

MODE

BRK

MAKE

BRK

MAKE

BRK

MAKE

PL4

OFF

ON

BATT

PL3

OFF

ON

DISOUT

PL17

OFF

ON

DEFAULT

CHANNEL 1

PL16

N/C

PL18

N/O CHANNEL 6 CHANNEL 2 CHANNEL 5 CHANNEL 3 CHANNEL 7 CHANNEL 4 CHANNEL 8 A BYPASS

LEVEL A

RL7 RL4 RL15 RL13 RL3 RL9 RL8 RL14 RL1

CHANNEL 1

PL19

N/C

PL20

N/O CHANNEL 6 CHANNEL 2 CHANNEL 5 CHANNEL 3 CHANNEL 7 CHANNEL 4 CHANNEL 8 B BYPASS

LEVEL B


RSF2

RSF1

The 4448 8x1 relay module

2.1 Rear connectors and pin-outThe K4448-2 rear connector which provides access to single balanced pairs or ‘twowire’ I/O has a 25 way ‘D’ connector for signal I/O and a 15 way ‘D’ type socket forcontrol. The K4448-2W rear connector has a single 64 pin DIN 41612 connector andprovides access to two balanced pairs or ‘four wire’ I/O.



The K4448.2

rear connector

K4448

.2

S

I

G

N

A

L

I

/

O

C

O

N

T

R

O

L

K4448

.2W

S

I

G

N

A

L

I

/

O

C

O

N

T

R

O

L

The K4448.2W

rear connector

The K4448-2 rear panel pin-outs are as follows:


4448

CONTROL Pin outsPin Function Pin Function

1 SEL 1 9 A0EXT

2 SEL 2 10 A1EXT

3 SEL 3 11 A2EXT

4 SEL 4 12 A3EXT (DIS)

5 SEL 5 13 LAMPSUP

6 SEL 6 14 OV

7 SEL 7 15 SCREEN

8 SEL 8

Signal output connector

25 way ‘D’ female socketPin Function Function

1 IP 3A- 14 IP 7A-

2 IP 3A+ 15 IP 7A+

3 OV 16 OV

4 IP 4A- 17 IP 8A-

5 IP 4A+ 18 IP 8A+

6 O/P A- 19 N/C

7 O/P A+ 20 N/C

8 OV 21 IP 5A-

9 IP 1A- 22 IP 5A+

10 IP 1A+ 23 OV

11 OV 24 IP 6A-

12 IP 2A- 25 IP 6A+

13 IP 2A+

The K4448-2W rear panel pin-outs are as follows:



AUDIO

I/O

C1 A1

A32C32

Note: View ofcontact sideof panelmounted plug.Wiring side ofcable mountedsocket isidentical

Row C Pin Number Row A

1 OV

IP 3A + 2 IP 3A -

IP 3B + 3 IP 3B -

IP 7A + 4 IP 7A -

OV 5 OV

IP 4A + 6 IP 4A -

IP 7B + 7 IP 7B -

IP 8A + 8 IP 8A -

IP 4B + 9 IP 4B -

OP A + 10 OP A -

OV 11 OV

OP B + 12 OP B -

N/C 13 N/C

IP 1A + 14 IP 1A -

IP 8B + 15 IP 8B -

IP 5A + 16 IP 5A -

0V 17 SEL 2

IP 2A + 18 IP 2A -

IP 1B + 19 IP 1B -

IP 6A + 20 IP 6A -

IP 5B + 21 IP 5B -

SEL 1 22 A0 EXT

A2 EXT 23 SEL 5

A1 EXT 24 SEL 3

FT VID 25 N/C

SEL 4 26 A3 EXT (DIS)

IP2B + 27 IP 2B -

LAMPSUP 28 SEL 6

OV 29 SEL 8

SEL 7 30 0 V

IP6B + 31 IP 6B -

0 V 32 0 V

2.2 Crosspoint control

Connecting button panels

Crosspoints may be selected by connecting a button panel (eg. Pro-Bel’s 8 button6200 or 16 button 6202) to the control socket on the K4448.2 or K4448.2W rearpanels and setting PL5 to ‘BUTTON’.

The analogue video switcher card has priority switching built in. If two keys arepressed simultaneously, the higher numbered one will be selected. This featureallows signal ‘line up’ to be performed quickly. To achieve this, one key must beheld down and a higher numbered key pushed and released. Each time the highernumbered key is pushed and released that source will be selected, as long as thebutton is held down. Once the button is released, the previous source is selectedagain.

Two 8x1 modules may be independently controlled from a 16 button panel, such asthe Pro-Bel 6202. This particular panel has two separate connectors to plug into thecontrol socket on each module, simplifying the installation. If the internalexpansion cables are fitted (see Source expansion), priority switching can beperformed across several modules. The highest priority module will always be theleft most, viewed from the front of the cards.


4448

SEL 1 SEL 2 SEL 3 SEL 4 SEL 5 SEL 6 SEL 7 SEL 8OV LAMPSUP GND

Example 8 way button panel wiring

Using binary control

To use binary control instead of a button panel, PL5 must be set to ‘BIN’. Crosspointsmay be then selected by binary addressing using 12V CMOS levels.

* Crosspoint output is tri-stated - used for system expansion.

LOGIC 1 = +12V, LOGIC 0 = 0V

For externally supplied binary signals wiring must be made to the 4448 rear panel.To select an input the correct binary address is needed and A3EXT must be logic 0.For source expansion all other modules whose inputs are not selected A3EXT mustbe at logic 1.

Binary control signals can be generated by one 8x1 module and fed to another, tocreate a master slave configuration. To achieve this, the lower expansion cable onthe front of the cards must be fitted, and all slave modules set to binary mode. Themaster module can be set to button mode and conveniently driven from a buttonpanel.



Binary addressingI/P A2EXT A1EXT A0EXT A3EXT

1 0 0 0 0

2 0 0 1 0

3 0 1 0 0

4 0 1 1 0

5 1 0 0 0

6 1 0 1 0

7 1 1 0 0

8 1 1 1 0

* X X X 1

3 Configuration

The module is easy to configure and build into expanded systems using expansioncables and jumpers.


4448

PL15

BIN

AR

Y(A

DD

RE

SS)

EX

PB

US

OUTPUTSWITCH

2W

IRE

EX

PB

US(

B)

CN

TL

EX

PB

US

CONTROL PANEL ANDBINARY SELECT LINES

LAMP SUPPLY

LOW VOLTAGEDC SUPPLY

(8X1)16x2-WAY

RELAYS

8 X TWO WIRE ORFOUR WIRE INPUTS

MODEBUTTON/BIN

PL5

PL23

FIELD TRIGON/OFF

CHANNEL SELECT LEDS

CH 1

CH 2

CH 3

CH 4

CH 5

CH 6

CH 7

CH 8

POWER LED

+12V

SIGNALOUTPUTS

PL14

CONTROLLOGIC

POWERREG

EXPANSIONENABLEJUMPERS

BATT

STATUS DATA

STATUSMON

+5V

-5V

-12V

RSF1

RSF2

RSF3

EXP SIGA+PL8

EXP SIGA-P10

DIS OUTPL3

CLOCK I/OPL16

FIELD TRIGPL7

BATT SUPPL4

2W

IRE

EX

PB

US

(A)

PL12

PL13

PL21

PL22

2 WIRE (B) IP

2 WIRE (A) IP 2 WIRE (B) OP

2 WIRE (A) OP

EXP SIGB+PL9

EXP SIGB-PL11

4448 8x1 relay switch schematic view

Signal expansion jumpersJumper Condition Function

PL10 MAKE or BREAK Signal expansion bus A - used when expanding 2/4-wire sources

PL8 MAKE or BREAK Signal expansion bus A + used when expanding 2/4-wire sources

PL11 MAKE or BREAK Signal expansion bus B - used when expanding 4-wire sources

PL9 MAKE or BREAK Signal expansion bus B + used when expanding 4-wire sources

Note:

The B expansion bus and jumpers PL9 and PL11 are not required with two-wireexpansion.

Expansion connectors and jumpers located near the front of the module

Configuration changes are accomplished by pulling the jumper from its currentposition on the header pins and moving it to the alternate position desired. Thejumper must make electrical contact with at least two pins.



Control configuration jumpersJumper Condition Function

PL5BUTTON

BIN

Simple button per crosspoint control

Binary control, used in expanded systems and computer control

PL7 OFF or ONFIELD TRIGGER, or FT LOGIC used to distribute field trigger signalbetween cards for synchronous switching

PL3 OFF or ON DIS OUT, used to disable downstream cards when expanding sources

PL6 OFF or ON CLOCK I/O, inter-card latching pulse

PL23 OFF or ONEnables generator of FT LOGIC field trigger pulse by this card (futureoption)

PL4 OFF or ONBATT SUP, used to extend battery supply from the first module in anexpanded system to others - normally off

PL13

PL13

PL21

PL22

EXP OUT

PL7

OFF

ON

BATTERY

EXPANSION IN

L

E

V

E

L

A

B

I

N

A

R

Y

PL14

L

E

V

E

L

B

L

E

V

E

L

A

B

I

N

A

R

Y

L

E

V

E

L

BEXP FT

PL6

OFF

ON

CLK I/O

PL9

BRK

MAKE

B EXP I/O

PL8

A EXP I/O

PL15

PL11

PL10

PL23

OFF

ON

FT LOGIC

PL5

BUTTON

BIN

MODE

BRK

MAKE

BRK

MAKE

BRK

MAKE

PL4

OFF

ON

BATT

PL3

OFF

ON

DISOUT

3.1 Configuring an 8x1 switcherThe simplest configuration is a single 8x1 module without expansion.

Control may be from either a simple control panel or in binary form from a controlsystem such as a computer. PL5 selects the method of crosspoint control.

3.2 Selecting power-down modeThe 4448 can be configured to output either nothing or input 1 if a power failure isexperienced. Configuration is accomplished by changing jumpers on the card.


4448

PL5 Crosspoint control modePosition Function

BUTTON Crosspoint selection using a button panel

BIN Crosspoint selection using binary control

PL17

OFF

ON

DEFAULT

CHANNEL 1

PL16

N/C

PL18

N/O CHANNEL 6 CHANNEL 2 CHANNEL 5 CHANNEL 3 CHANNEL 7 CHANNEL 4 CHANNEL 8 A BYPASS

LEVEL A


CHANNEL 1

PL19

N/C

PL20

N/O CHANNEL 6 CHANNEL 2 CHANNEL 5 CHANNEL 3 CHANNEL 7 CHANNEL 4 CHANNEL 8 B BYPASS

LEVEL B


Bypass jumpersFunction PL17 PL16, PL18 PL19, PL20

No- Bypass ON N/O N/O

IP 1 Bypassed both levels OFF N/C N/C

3.3 Source expansionSeveral switcher cards can be linked to make larger switchers up to 64x1. Each cardsupports 8 inputs. Expansion employs the front of card connectors together withthe ribbon cables supplied with the card.



CONTROLINPUTS1 TO 8

INPUTS1 TO 8 OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13

16

x1

24

x1

32

x1

PL8,10, 9,11: MAKEPL3,6: ONPL7, 23, 4: OFF

CONTROLINPUTS9 TO 16

INPUTS9 TO 16

CONTROLINPUTS

17 TO 24

INPUTS17 TO 24

CONTROLINPUTS

25 TO 32

INPUTS25 TO 32

NOTE:ONLY CONTROL MODEJUMPER PL5 NEEDS TOBE SET ON LAST CARD

PL5 MODEBUTTON EXPANSION

CONFIG

PL21

PL22

OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13



CONFIG

PL21

PL22

OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13



CONFIG

PL21

PL22

OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13



CONFIG

PL21

PL22

AE

XP

AE

XP

AE

XP

AE

XP

Expanding to 16, 24 and 32 x 1 (four wire)

Note: Expansion to 64 follows the same pattern as shown above

Synchronous switching

Synchronous (TV field triggered) switching is not normally required on relayswitches and the rear connectors are not provided with TV reference inputs althoughprovision is made on the module for field pulse generation for use in the future.

If synchronous switching is required a field pulse may be attainable from a spareexpansion output connector of a video switch (3408 or 3438) and input via a ribboncable to PL12. Care should be taken so that only the FT LOGIC pulse is enabled intothis expansion input.


4448

4 -wire source expansion jumper settings with buttoncontrol and asynchronous switchingJumper Setting Function

PL5 BUTTON Control mode

PL8 & PL10 ON 2 wire ‘Level A’ signal expansion O/P

PL9 & PL11 OFF 2 wire ‘Level B’ signal expansion O/P

PL3 ON DIS OUT priority switching signal

PL6 ON Clock I/O

PL 7 OFF FT LOGIC - synchronous switching mode

PL23 OFF Field trigger pulse generation enable

PL4 OFF Common battery supply line

4448

4448

4448

4448

1 2 3 4

16 inputs

24 inputs

32 inputs

4-wire expansion cabling for 32x1 system

The following rules apply to source expansion:

• Only Level A and/or Level B expansion cables used

• Expansion jumpers not needed on last card in chain

• Outputs available from last card in chain

• An ICON video switching module capable of producing a field trigger can supplya vertical trigger for synchronous switching on all 4448 cards. The trigger pulseis fed via ribbon cable on PL12 (level A expansion in) and is passed to thecorresponding expansion out connector if PL17 is in the ON state.

• Synchronous switching between sources is only possible if all sources arealready synchronised to one reference

• PL4 should always be OFF unless another card has had its battery removed



4-wire source expansion jumper settings with button controland synchronous switchingJumper Setting Function

PL5 BUTTON Control mode

PL8 & PL10 ON 2 wire ‘Level A’ signal expansion O/P

PL9 & PL11 OFF 2 wire ‘Level B’ signal expansion O/P

PL3 ON DIS OUT priority switching signal

PL14 ON Clock I/O

PL 7 ON FTLOGIC - for synchronous switching

PL 23 OFF Field trigger pulse generator enable (not valid on 4448 -leave OFF)

PL4 OFF Common battery supply line

Notes:

2-wire expansion requires Level A bus inter-card cables only.

4-wire expansion requires both Level A and Level B inter-card cables.

Examples of ICON modules that can produce a field trigger are the 3408 SDI 8x1switch, and the 3438 analogue video 8x1 switch fitted with a 2315 module

3.4 Level expansionIt may be useful in some applications for one card to control the input selection ofother cards to create a multi-level switcher. This mode is called master/slave andutilises the binary control interconnections.

The master card can be driven from a button panel and all other cards by binaryaddressing using the lower expansion connectors PL14-PL15 on the front of the card.

In this example of a three level component switcher, binary and control/signalexpansion bus connectors are used since it is desirable to distribute timing signalsfrom the first card to ensure switching at the same time for all cards in the system.However the signal expansion jumpers must be OFF (BREAK) on all cards.


4448

CONTROLINPUTS1 TO 8

INPUTS1 TO 8Level 1

OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13

PL8,10, 9,11: BREAKPL3,6: OFFPL7: ON, 23, 4: OFF

INPUTS1 TO 8Level 2

INPUTS1 TO 8Level 3

NOTE:ONLY CONTROL MODEJUMPER PL5 MUST BESET ON LAST CARD


CONFIG

PL21

PL22

OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13


PL5 MODEBINARY EXPANSION

CONFIG

PL21

PL22

OUTPUTS

BIN

AR

YE

XP

BE

XP

CN

TL

EX

P

PL14

8 X 1

PL12

PL15 PL13


PL5 MODEBINARY EXPANSION

CONFIG

PL21

PL22

FT LOGIC (FIELD PULSE FROMVIDEO SWITCH)

AE

XP

AE

XP

AE

XP

Example of level expansion: synchronous three level 8x1 switcher

The following rules apply to synchronous level expansion

• binary expansion cables required

• level A expansion cables required for FT LOGIC connection

• a field trigger must be fed to the first card in an expansion chain with PL7 set toON and PL23 set to OFF

• expansion jumpers not needed on last card in chain

• synchronous switching between sources is only possible if all sources arealready synchronised to one reference

• PL4 should always be OFF unless another card has had its battery removed



4448

4448

4448

1 2 3

FT LOGIC

Expansion cabling for three level synchronous switcher

Configuring level expansion with synchronous switchingJumper Master card Slave cards Function

PL5 BUTTON BIN Control mode

PL8 & PL10 OFF OFF 2 wire ‘Level A’ signal expansion O/P

PL9 & PL11 OFF OFF 2 wire ‘Level B’ signal expansion O/P

PL3 OFF OFF DISOUT, priority switching signal

PL6 OFF OFF CLK I/O

PL7 ON ON FTLOGIC - for synchronous switching

PL23 OFF OFFField trigger pulse generator enable (not valid on4448 -leave OFF)

PL4 OFF OFF Common battery supply

3.5 Example expansion cablingThe following illustration shows the actual wiring arrangement used for 4-wire levelexpansion with the boards placed at the minimum pitch of 20mm apart.

Notice the use of module guides fitted to the lower front rail of the frame to easecard insertion and removal. Please refer to the ICON frackframe manual for moredetails of installing modules and rear connectors.

The lower Binary expansion cabling would not normally be required with sourceexpansion.


4448

NOT USED

CONTROL FLOW

BINARY (ADDRESS) EXPANSION

84

44

84

44

84

44

FT LOGIC only (for sync switching)

4 Trouble shooting

The green card edge POWER LED is not lit

• check the PSU indicator to confirm that there is power to the frame

• check the resettable fuses protecting the card - do this by removing the powerto the card for about 30 seconds then restoring the power

• if necessary, refer to the power supply trouble shooting guide in the appropriateICON rackframe manual section

There is no output signal

• ensure that the green power LED on the front of the card is lit

• check that the inputs are connected to the rear panel and a valid signal is present

• verify that the correct channel is selected - the LED on the button panel shouldshow the same channel number as the CHAN SEL LED on the front of the 4448module

• check the output connection from the rear panel to the monitoring device andthe output cable

• ensure that the cable wiring and jumper link settings are correct for theconfiguration used

The button panel will not select a different input

• ensure that the jumper PL5 is correctly set to ‘BUTTON’ on all modules

• check that the expansion cables are correctly installed

• check that another, lower numbered, input is not permanently selected

The output signal is corrupted

• check that the Level A and/or B jumpers are set correctly for the configuration

• ensure all expansion cables are installed correctly

• check that the 2-wire and 4-wire jumpers have been set correctly


4448

5 COSMOS status monitoring

If the frame is fitted with a COSMOS controller card the following parameters will bereported back to the COSMOS status monitoring system:

• module present

• input 1-8 selected

• power OK

In addition, the module is programmed with the following information, which can beread by the status monitoring controller:

• module type

• module bar code

• module issue no

For further details of the Pro-Bel status monitoring system please refer to theCOSMOS status monitoring manual.


4448

6 Specification

Inputs

Number and type: 8 with 2 balanced pairs per input

Output

Number and type: 2 balanced pairs

Switcher Performance

Data rates: Up to 5Mbit/s in balanced mode with 110�terminations

Maximum voltage: 30 Vdc/rms a.c.

Maximum current: 1A

Operating time 2 - 3ms typ.

Control

Battery supply voltage:

(BATTSUP)

If supplied by external DC source, +3.5V to +12V

External field trigger:

(FTLOGIC)

Allows switch transition to be synchronised toexternal source

BUTTON mode: Max current sunk by select line 8mA for 24Vexternal supply, 4mA for +12V on board supply.(LAMPSUP 12V @ 100mA maximum)

BINARY mode: 3 bit binary address, 12V CMOS positive logicconvention

Card select (CLKI/O): Disables other cards in an expanded system

Priority encoding:

(DISIN/DISOUT)

Encodes switcher priority for expanded system

Indications

Power: Green LED

Input selected: 8 x yellow LEDs


4448

General

Power: +5V DC, +/- 13.5V DC from ICON rackframe

Temperature range

Operating: 0� to +40�C

Storage: -10�C to +70�C



7 Ordering information

Part number Description

ICO-4448-2000 8 X 1 Relay Switch, 2 wire, D connectors (20mm)

ICO-4448-20W0 8 X 1 Relay Switch, 4 wire, DIN 41612 connector(20mm)


4448

Contents1 Introduction 12 Installation 32.1 Rear connectors and pin-out 42.2 Crosspoint control 7

3 Configuration 93.1 Configuring an 8x1 switcher 113.2 Selecting power-down mode 113.3 Source expansion 123.4 Level expansion 153.5 Example expansion cabling 17

4 Trouble shooting 195 COSMOS status monitoring 216 Specification 237 Ordering information 25

4448 Relay 8x1 Switch FV 1.00 · 2012. 10. 29. · 3 Configuration 9 3.1 Configuring an 8x1...

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Transcript of 4448 Relay 8x1 Switch FV 1.00 · 2012. 10. 29. · 3 Configuration 9 3.1 Configuring an 8x1...