AMG AMG2683 Manuel utilisateur

AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 1of 7 AMG2683 Instruction

Sheet D15251-01

AMG2683

Instruction Manual

Eight Channel Video Transmit Unit with Bi-directional Data

The AMG2683 is a standalone eight channel video transmit unit designed to transmit eight video

signals. It also provides two RS485/RS422 or RS232 bi-directional data channel. It is designed to be

powered from an AMG2002 power supply.

The AMG2683 is designed to operate with the AMG2684(R) eight channel video receivers and data

transceiver requiring two multimode fibres for operation of the video and bi-directional data.

Index Page No.

Introduction.......................................................................................................... 2

Unit Functional Schematic................................................................. 2

Optical System Connection............................................................... 2

Connections ......................................................................................................... 2

Video Input connection...................................................................... 2

Optical Connections.......................................................................... 2

Power Connections ........................................................................... 3

Data Connections.............................................................................. 3

Indicators ........................................................................................................... 4

Physical Information ........................................................................................... 5

Dimensions........................................................................................ 5

Mounting Details................................................................................ 5

Configuration of the RS422/RS485 Data Channel ............................................ 5

Removal from the Case....................................................................................... 7

Safety ........................................................................................................... 7

Maintenance ......................................................................................................... 7

218mm

109mm

193mm between mounting slot centres

AMG

2683

8 CHANNEL VIDEO

TRANSMIT

BI-DIRECTIONAL

DATA

FRONT PANEL INDICATORS

VIDEO PRESENT

CH 1 CH2 CH 5 CH6

O O O O

CH 3 CH4 CH 7 CH8

O O O O

POWER

OGND

+12- 16 Volts dc

OPTO

REAR PANEL CONNECTIONS

CH 5

OPTO

OUT

GND

OUT-

OUT+

IN-

IN+

DATA

CONNECTIONS

RS 422

RS 485

O O

RX TX

O O

CH1-4 CH5 -8

DATA PRESENT

VIDEO

CH 1

CH 6

CH 7

CH 8 CH 4

CH 2

CH 3

DATA

5-8 DATA

1-4

POWER

5-8 POWER

1-4

AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 2of 7 AMG2683 Instruction

Sheet D15251-01

Introduction

Unit Functional Schematic

The AMG2683 receives a 1310nm optical signal and

drops of data transmitted from an AMG2684R

receiver. It then inserts eight video and one data signal

onto the outgoing 1310nm optical signal. The video

signals are inserted on the 8 channels available on the

optical fibre.

Optical System Connection

The AMG2683 is connected as illustrated below when

used with an AMG2684R 8 channel receiver.

Note that where necessary repeaters can be added at nodes to increase the average distance

between nodes.

Connections

Video Input Connection

Connector ...........................................8 off 75 ohm BNC Socket.

Input Impedance..................................75 ohm terminated.

Input Level ...........................................1 volt p-p nominal

Frequency Response ..........................10Hz to 5.75MHz min.

Optical Connections

OPTO OUT

Connector............................................ST

Optical Launch Power .........................-5dBm

Wavelength..........................................1310nm

OPTO IN

Connector............................................ST

Optical Sensitivity................................-22dBm

Wavelength..........................................1310nm

Power Connection

Connector............................................2off removable screw terminal connectors (3.5mm spacing)

Manufacturers Part No. Phoenix/Combicom MC1-5/2-ST-3.5

AMG Part No.G00047-00

Power requirement ..............................12 volts to 16 volt DC @

1500mA (2 amp turn on

current)

Connections.........................................See schematic

+12 – 16 Volts on lower pin

0 Volts on upper pin

2683 2600 optics TX

1310nm

Incoming Fibre

(from output of 2684)

8 Video Inputs RS422/485

1310nm

Outgoing Fibre

(to input of 2684)

AMG

2783

8 CHANNEL VIDEO

INSERT

BI-DIRECTIONAL

DATA

OPTOSYNC

FRONTPANEL INDICATORS

VIDEOPRESENT

CH 1 CH2 CH5 CH6

O O O O

CH 3 CH4 CH7 CH8

O O O O

POWER

OGND

+12-16Vo lts dc

OPTO

REARP ANELCONNECTIONS

CH5

OPTO

OUT

GND

OUT-

OUT+

IN-

IN+

DATA

CONNECTIONS

RS 422

RS 485

O O

RX TX

O O

CH1-4 CH5-8

DATAPRESENT

VIDEO

CH 1

CH6

CH7

CH8 CH 4

CH 2

CH 3

DATA

5-8

DATA

1-4

POWER

5-8 POWER

1-4

2784RN

AMG

OPTO SYNC

VIDEO PRESENT

CH1

O O

CH2

CH3

CH4

CH1

O O

DATA PRESENT

------------------ -------

8CH V IDEO RX

DATA TX/RX

POWER

VIDEO PRESE NT

CH5

O O

CH6

CH7

CH8



OPTO IN D

CH 8 CH 4

OPTO OUT

Channels 1 to 4

Power

Ground

+12 – 16 Volts dc



Channels 5 to 8

Power

Ground

+12 – 16 Volts dc

AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 3of 7 AMG2683 Instruction

Sheet D15251-01

Data Connections

Number of Channels............................Two independent data channels, one associated with video

channels 1-4 and another associated with video channels 5-8.

Data Connector ...................................5 way removable spring terminal connector (2.5mm spacing)

Manufacturers Part No. Phoenix/Combicom FK-MC-0.5/5-ST-

2.5

AMG Part No G15098-00

SW1 used to select between RS232 and RS485/422, SW2 is used to select between RS422 and

RS485.

NOTE: The unit is shipped from the factory as RS485 unless otherwise requested.

Connections RS422 4 wire..................See schematic

Connections RS485 2 wire..................See schematic

Connections RS232 ............................See schematic

Protocol................................................RS232

SW1 switch position 9 on, switch position 10 on

SW2 all off

RS485 2wire

SW1 switch position 9 off, switch position 10 off

SW2 see below

RS422 4 wire Bus’ed or point to point

SW1 switch position 9 off, switch position 10 off

SW2 see below



OPTO IN D

CH 8 CH 4

OPTO OUT Channels 1 to 4

Pin 5 – Ground

Pin 4 – Data Out –

Pin 3 – Data Out +

Pin 2 – Data In –

Pin 1 – Data In +



Channels 5 to 8

Pin 5 – Ground

Pin 4 – Data Out –

Pin 3 – Data Out +

Pin 2 – Data In –

Pin 1 – Data In +



OPTOIN D

CH 8 CH 4

OPTO OUT

Channels 1 to 4

Pin 5 – Ground

Pin 4 – No Connection

Pin 3 – No Connection

Pin 2 – Data In/Out –

Pin 1 – Data In/Out +



Channels 1 to 4

Pin 5 – Ground

Pin 4 – No Connection

Pin 3 – No Connection

Pin 2 – Data In/Out –

Pin 1 – Data In/Out +



OPTO IN D

CH 8 CH 4

OPTO OUT

Channels 1 to 4

Pin 5 – Ground

Pin 4 – No Connection

Pin 3 – Data Out

Pin 2 – No Connection –

Pin 1 – Data In



Channels 1 to 4

Pin 5 – Ground

Pin 4 – No Connection

Pin 3 – Data Out

Pin 2

–

No Connection

–

Pin 1 – Data In



AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 4of 7 AMG2683 Instruction

Sheet D15251-01

See below for Configuration of the RS485 / RS422 data channel and description of tristate

operation

Each of the two data channels can be set up independently.

Indicators

Power...................................................Green – unit powered

Off – no power applied to unit

Opto Sync TX ......................................Green - optical channel transmitting

Off - optical channel not transmitting

Opto Sync RX......................................Green - optical channel receiving

Off - optical channel not receiving

Video Present CH1..............................Green – video signal present on video CH1 input BNC

Off – no video present on video CH1 input BNC

Video Present CH2..............................Green – video signal present on video CH2 input BNC

Off – no video present on video CH2 input BNC

Video Present CH3..............................Green – video signal present on video CH3 input BNC

Off – no video present on video CH3 input BNC

Video Present CH4..............................Green – video signal present on video CH4 input BNC

Off – no video present on video CH4 input BNC

Video Present CH5..............................Green – video signal present on video CH5 input BNC

Off – no video present on video CH5 input BNC

Video Present CH6..............................Green – video signal present on video CH6 input BNC

Off – no video present on video CH6 input BNC

Video Present CH7..............................Green – video signal present on video CH7 input BNC

Off – no video present on video CH7 input BNC

Video Present CH8..............................Green – video signal present on video CH8 input BNC

Off – no video present on video CH8 input BNC

Data Present TX ..................................Green – logic one present on the data input

Red – logic zero present on the data input

Off – tri-state off or no connection on the data input

This represents the data signals being transmitted on the optical fibre

Data Present RX..................................Green – logic one present on the corresponding data

output

Red – logic zero present on the data output

Off – tri-state off on the data output

This represents the data signals being received on the optical fibre

AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 5of 7 AMG2683 Instruction

Sheet D15251-01

Physical Information

Dimensions

Height ..................................................109mm

Width....................................................218mm

Depth ...................................................70mm

Weight..................................................800grams

Mounting Details

The unit is designed to mount into a panel via the two mounting slots of 4.5mm x 10mm.

Mounting Details

The unit is designed to mount into a panel via the two mounting slots of 4.5mm x 10mm.

Configuration of the RS422/485 Data Channel

The RS422/485 data channel can operate in two modes that are set by SW2 on the main PCB. (See

below for removal of the PCB and access to SW2)

Mode 1 – RS485 two wire half duplex transmission.

Mode 2 – RS422 four wire full duplex transmission. In this mode the RS422 output will transmit a

tristate condition as well as logic high and logic low for systems which require bus-ing of

the RS422 four-wire connection.

MODE Configuration Details SW2

position 1 SW2

position 2 SW2

position 3 SW2

position 4

1 RS-422 4 wire Point-to-Point -

and RS-422 BUS system OFF OFF OFF OFF

2 RS-485 2 wire BUS systems OFF ON ON ON

The data input for both the RS485 and the RS422 modes detects a tri-state input condition by

monitoring the differential voltage level across the input. A differential level below 500mV positive or

negative will be detected as a tristate condition. A level above 500mV positive or negative will be

detected as a logic 1 or logic zero respectively. It is important therefore to terminate the RS485

bus or the RS422 input bus using 120ohms if a pre-bias is present on the RS485 or RS422 bus.

A large number of third party equipment manufacturers apply a pre-bias on their RS485 bus. This pre-

bias is applied by pulling one arm of the RS485 bus high (+5 volts) and the other arm low (0 volts)

using high value resistors within the third party equipment. In order to ensure that a tri-state condition

is detected by the AMG2700 equipment, then these resistors should have a value above 1kohm.

AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 6of 7 AMG2683 Instruction

Sheet D15251-01

SW1 Switch Settings

All SW1 switch settings are set at the factory as follows:

Channels 1-4 Card

Switch

Position Description Setting

1 Video channel configuration OFF

2 Video channel configuration OFF

3 Video channel configuration OFF

4 Primary / Secondary Board Setting ON

5 Dual Redundant / Not dual redundant OFF

6 Not Used OFF

7 Not Used OFF

8 On board data / Separate data card ON

9 RS232 or RS422/485 OFF for

RS485/422

10 RS232 or RS422/485 OFF for

RS485/422

Channels 5-8 Card

Switch

Position Description Setting

1 Video channel configuration OFF

2 Video channel configuration OFF

3 Video channel configuration ON

4 Primary / Secondary Board Setting OFF

5 Dual Redundant / Not dual redundant OFF

6 Not Used OFF

7 Not Used OFF

8 On board data / Separate data card ON

9 RS232 or RS422/485 OFF for

RS485/422

10 RS232 or RS422/485 OFF for

RS485/422

AMG Systems Ltd. reserves the right to make changes to this document without

notice. The information herein is believed to be accurate. No responsibility is

assumed by AMG for its use.

Page 7of 7 AMG2683 Instruction

Sheet D15251-01

Removal From the Case

Note: - The 2600 PCB’s are static sensitive. Handle with proper care and use normal electrostatic

discharge (ESD) procedures. Use properly grounded protection (for example, wrist stamps) when

handling the PCB.

In order to remove the case (to access SW1 and SW2)

1.1.Loosen and remove the four screws on the top and bottom of the unit’s rear panel.

1.2.Slide the PCB assembly connected to the rear panel out of the case.

1.3.Ensure that the optical fibre is not trapped.

SW1 and SW2 can be found on the bottom right hand corner of each board and are labelled, close to

the rear panel. The switch position are labelled on the switch, switch position 1 is always the furthest

from the edge of the PCB.

When re-inserting the main PCB into the housing take care not to trap the optical fibre or the board

interconnection cables.

Fasten the rear panel with the screws.

Safety

The 2600 series of products uses a Class 1 laser system in accordance with EN 60825-2:2000.

However it is always advisable to follow good practice when working with optical fibre systems. This

includes:

Do not stare with unprotected eyes or with any unapproved collimating device at fibre ends or

connector faces, or point them at other people.

Use only approved filtered or attenuating viewing aids

For other safety issues and advice on good practice associated with the optical fibres systems see EN

60825-2:2000 or your local safety officer.

Maintenance

There are no user serviceable parts within the AMG2600 products.

In case of problem or failure contact your local support centre or AMG Systems Ltd, Technical Support

Department on tel. +44 (0) 1767 600777.

See unit data sheet for full specification.

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