AMG AMG4683ER Bedienungsanleitung

AMG Systems Ltd. reserves the right to make changes to this

document without notice. The information herein is believed to

be accurate. No responsibility i

s assumed by AMG for its use.

Page

AMG4683ER

Instruction

Sheet

D16845

01.doc

AMG4683ER

Instruction Manual

8 Channel Video Transmit Unit with Bi

directional Data

Channel and Ethernet for a Multimode Fibre Link

The

AMG4683ER

is a rackmount eight channel video transmit unit designed to transmit 8 video

signals and transmit

and receive 1 data signal plus full duplex 100BaseT Ethernet connectivity over

two Multimode fibres.

The

AMG4683ER

is designed to plug into an AMG2005 subrack, which in turn fits into a 19" rack

system.

The

AMG4683ER

is designed to operate with

AMG468

or rackmount equivalent

AMG4684ER

eight

channel video receive unit in a point to point configuration.

AMG Systems Ltd. reserves the right to make changes to this

document witho

ut notice. The information herein is believed to

be accurate. No responsibility is assumed by AMG for its use.

Page

AMG4683ER

Instruction

Sheet

D16845

01.doc

Contents

Introduction

Unit Functional Schematic

................................

..................

Optical Connection

................................

.............................

Connections

Video Input Connections

................................

....................

Optical Connections

................................

...........................

Power Connection

................................

..............................

Ethernet Connection

................................

...........................

Data and Audio Channel Connections

................................

...............................

Data and Audio Channel Configuration

................................

..............................

Data Interface Connect

ions Channel A

................................

..............................

Data Channel A Configuration

................................

............

Front Panel Indicators

Power LED

................................

..........

Video Input LED’s

................................

...............................

ibre Optic LED’s

................................

...............................

Low Speed Data LEDs

................................

.......................

Ethernet Operation

Physical Information

Dimensions

................................

.........

Mounting

Details

................................

Removal / replacement from / to the Case

................................

.........................

Safety

Maintenance and Repair

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

AMG4683ER

Instruction

Sheet

D16845

01.doc

Introduction

Unit Functional Schematic

The

MG4683ER

transmits up to 8 video

and 1 data signal to the

AMG4684ER

It also receives 1 data channel transmitted

from the

AMG4684ER

Ethernet connectivity is also provided

between the two units.

Optical Connection

The

AMG4683ER

is connected as illus

trated below when used with an

AMG4684ER

channel

receive unit acting as a point to point system.

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

AMG4683ER

Instruction

Sheet

D16845

01.doc

Connections

Video Input Connections

No. of channels

................................

....

Connector

................................

............

75 ohm BNC Socket.

Input Impedance

................................

75 ohm terminated.

Input Level

................................

...........

1 volt p

p nominal

equency Response

...........................

10Hz to 7MHz.

Optical Connections

PRIMARY OPTO OUT

Connector

................................

............

LC/PC

Primary Optical Launch Power

............

5dBm

Wavelength

................................

..........

1310nm

Optical Fibre

................................

........

Multimode 50/125 or 62.5/125**

PRIMARY OPTO IN

Connector

................................

............

LC/PC

Primary Optical Sensitivity

...................

22dBm

Wavel

ength

................................

..........

1310nm

Optical Fibre

................................

........

Multimode 50/125 or 62.5/125**

**Note: the transmission distance is limited by the bandwidth of the Multimode optical fibre. The optical

data rate is 1.25Gbits/s. The maximum bandwidth specification at this data rate for Multimo

de fibre is

2km. although in most cases the units will operate successfully over longer fibre lengths. It is

advisable however for distances greater than 2km, to have the optical fibre tested.

Power Connection

Power supply

................................

.......

from plug in connection on the

AMG2009 / AMG2015 subrack

Power consumption

.............................

10 Watts max.

Ethernet Connection

Ethernet Data Connector

....................

RJ45

Interface

................................

...............

Auto

negotiation up to 100BASE

TX full duplex

Ethernet Data Rate

..............................

Maximum 50Mbits/s total Ethernet traffic on fibre

Data and Audio Cha

nnel Connections

DATA CHANNEL A

Data Channel A

................................

...

1 channel

Data Connector

................................

....

RJ45

Channel A Interface

.............................

On Board Data Interface

–

RS232, RS422 or RS485. Selected

by slide switch above the RJ45 connector.

RS232

–

switch position

high (closest to BNC connection

RS422

–

switch position

–

middle

RS485

–

switch position

–

low (furthest from BNC connections)

DATA CHANNEL B

Data Channel B

................................

...

Not Present

AMG Systems Ltd. reserves the right to make changes to this

document without notice. Th

e information herein is believed to

be accurate. No responsibility is assumed by AMG for its use.

Page

AMG4683ER

Instruction

Sheet

D16845

01.doc

Data and Audio Channel Configuration

The

AMG4683E

and rackmount equivale

AMG4683ER

sends and receives data to/from Channel A.

Channel B is not available. Channel A is a single data interface selectable by the user with the slide

switch on the rear panel.

Data Interface Connections Channel A

Channel A

RJ45 Pin

No.

RS485

[switch low]

RS422 [switch

mid]

RS232

[switch high]

Cat

5/6 Cable

Colour Code T568B

IN + (A)

GND

White/orange

(B)

Orange

White/green

Blue

White/blue

Green

IN/OUT + (A)

OUT + (A)

White/brown

IN/OUT

(B)

OUT

(B)

OUT

Brown

Note: (A) or (B) in brackets in above table refers to RS485 / RS422 data specification, not Channel A,

Channel B.

Data Channel A Configuration

Channel A is always present and allows for a RS232, RS422

(full duplex, four wire) or RS485 (half

duplex, two wire) interface depending on the position of the switch located above the RJ45 connector.

The switch signifies the presence of the X16004 Low Speed Data/Audio Interface Board. If there are

LED's present o

n the RJ45 connector then an X16003 Ethernet Interface Board is fitted.

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 600

mV positive or

negative will be detected as a tri

state conditio

n. A level above 600mV 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 120Ωif a pre

bias is present on the RS485 or RS422 bus.

A large numbe

r 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 the AMG equipment

detects a tri

state condition, then these resistors should have a value above 5k

Ω. If the third party

bias resistors are less the 750Ωthe bus can be double or triple terminated as required to ensure that a

tri

state level is detected.

Note: The Data Channel A is shipped from the factory set up for RS485 operation unless otherwise

equested.

AMG Sy

stems 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

AMG4683ER

Instructi

Sheet

D16845

01.doc

Front Panel Indicators

Power LED

Power

................................

...................

Green

unit powered

Off

no power applied to unit

Video Input LED’s

Video Present CH1

...........................

Green

video signal present on input BNC

R/G

channel present but no video on I/P BNC

Fibre Optic LED’s

Primary Opto Sync TX

.........................

Green

optical channel transmitting

Off

optical channel not transmitting

Primary Opto Sync RX

.........................

Green

optical channel receiving

Org

optical channel receiving but not sync.

Off

optical channel not transmitting

Low Speed

Data LEDs

Channel A

Data Present TX (RS485 or RS422)

...

Green

logic zero (+V,

V) present on IN+, IN

Red

logic one (

V,V+) present on IN+, IN

Off

tri

state off or no connection on IN+, IN

Data Present TX (RS232)

....................

Green

logic zero (+V) present o

n input IN+

Red

logic transitions present on input IN+

Off

logic one (

V) present on input IN+

This represents the data signals being transmitted on the optical fibre

Data Present RX (RS485 or RS422)

...

Green

logic zero (+V,

V) present on OUT+, OUT

Red

logic one (

V,+V) present on OUT+, OUT

Off

tri

state off or no connection on OUT+, OUT

Data Present RX (RS232)

...................

Green

logic zero (+V) present on OUT+

Red

logic transitions present on OUT+

Off

logic one (

V) present on OUT+

This re

presents 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

AMG4683ER

Instruction

Sheet

D16845

01.doc

Ethernet Operation

In order for the AMG system to transmit Ethernet signals, an onboard RJ45 Ethernet interface or

X16003 Ethernet interface adaptor should be fitted to both the Transmit uni

t and the Receive unit.

The Ethernet interface can operate at either 10Mbits/s half duplex, or 100Mbit/s full duplex, and data is

transmitted from one port the other port with the minimum of delay or buffering. The maximum

bandwidth (at 100Mbit/s full dup

lex) available for transmission across the fibre link is nominally

50MBit/s.

The 100BaseT port does not implement MDI/MDIX; it should be connected with a straight though

cable to an external switch port and with a cross over cable when connected directly

to a PC or DTE.

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

AMG4683ER

Instruction

Sheet

D16845

01.doc

Physical Information

Dimensions

Height

................................

...................

3U Plug

Width

................................

....................

14HP

Depth

................................

...................

170mm excluding connectors

Weight

................................

..................

1000grams

Mounting Details

The unit is designed to be mounted within an AMG2009 or AMG2015 Subrack on standard card

guides.

Remova

l / replacement from / to the Case

Note:

The AMG unit PCB's are static sensitive. Handle with proper care and use normal electrostatic

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

handling the PCB.

To re

move units from the case to access the data expansion boards and the daughter boards, remove

the 2 or 4 fixing screws on the rear panel and slide the PCB's out of the case.

Ensure that the fibres do not snag or get trapped.

To replace the PCB's into the

case, slide the PCB's gently into the case aligning the boards with the

appropriate slots. Ensure that the fibre do not snag or get trapped.

Safety

AMG Optical Fibre Products use Class 1 laser systems in accordance with EN 60825

2:2000.

It is always a

dvisable 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 filter

ed or attenuating viewing aids

For other safety issues and advice on good practice associated with optical fibre systems, please see

EN 60825

2:2000 or your local safety officer.

Maintenance and Repair

There are no user serviceable parts within AMG pro

ducts. See unit data sheet for full specification.

In case of problem or failure, please call your local support centre or contact:

AMG Systems Ltd.

3 The Omega Centre, Stratton Business Park, Biggleswade, Beds., SG18 8QB, UK.

Phone

+44 (0) 1767

600 777

Technical Support

+44 (0) 1767 604 491

techsupport@amgsystems.com

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