AMG AMG4723 Manual de usuario

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

documen

t without notice. The information herein is believed to

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

Page

AMG4723

Instruction

Sheet

D16804

00.doc

AMG4723 Instruction

Manual

2 Channel Video Transmit Unit with Bi

directional Data

Channel

The

AMG4723

is a standalone two channel video transmit unit designed to transmit 2 video signals

and transmit and receive 1 data signal over two singlemode

fibres.

The

AMG4723

is designed to be powered using an

AMG2003

standalone power supply.

The

AMG4723

is designed to operate with

AMG4724

or rackmount equivalent

AMG4724R

two

channel video receive unit in a point to point configuration.

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

AMG4723

Instruction

Sheet

D16804

00.doc

Contents

Introduction

Unit Functional Schematic

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

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

Optical Connection

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

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

Connections

Video Input Connections

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

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

Optical Connections

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

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

Power Connection

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

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

Data and Audio Channel Connections

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

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

Data and Audio Channel Configuration

Data and

Audio Channel Configuration

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

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

Data Interface Connections Channel A

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

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

Data Channel A Configuration

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

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

Front Panel Indicators

Power LED

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

..........

Video Input LED’s

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

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

Fibre Optic LED’s

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

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

Low Speed Data LEDs

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

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

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

G4723

Instruction

Sheet

D16804

00.doc

Introduction

Unit Functional Schematic

The

AMG4723

transmits up to 2 video and

1 data signal to the

AMG4724

It also receives 1 data signal transmitted

from the

AMG4724

Optical Connection

The

AMG4723

is connected as illustrated below when used with an

AMG4724

ceive unit acting as a

point to point system.

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

document without notice. T

he information herein is believed to

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

Page

AMG4723

Instruction

Sheet

D16804

00.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

Frequency Response

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

10Hz to 7MHz.

Optical Connections

RIMARY OPTO OUT

Connector

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

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

LC/PC

Primary Optical Launch Power

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

5dBm

Wavelength

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

..........

1310nm

Optical Fibre

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

........

Singlemode

PRIMARY OPTO IN

Connector

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

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

LC/PC

Primary Optical Sensitivity

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

22dBm

Wavelength

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

..........

1310nm

Optical Fibre

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

........

Singlemode

Power Connection

Connector Type

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

...

.1mm screw lock long power jack

–

centre positive

Connector Partno.

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

Switchcraft S761K, AMG G16125

Supply Voltage

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

.....

13.5 to 18.0 Volts DC.

Maximum Power

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

10 Watts

Data and Audio Channel 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 RJ45 connector.

RS485

–

switch position

high (closest to BNC connections)

RS422

–

switch position

–

middle

RS232

–

switch position

–

low (furth

est from BNC connections)

DATA CHANNEL B

Data Channel B

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

...

Not Present

AMG Sys

tems 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

AMG4723

Instruction

Sheet

D16804

00.doc

Data and Audio Channel Configuration

The

AMG4723

and rackmount equivalent

AMG4723R

sends and receives data to/from Channel A.

Channel B is not avai

lable. 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 high]

RS422

witch mid]

RS232

[switch low]

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)

N/A

White/brown

IN/OUT

(B)

OUT

(B)

OUT

Brown

Note: (A) or (B) in bra

ckets 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 dependi

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

e 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 600mV positive or

negative will be detected as a tri

state condition. 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 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 the AMG equipment

detects a tri

state condition, then these resistors should have a value above 5kΩ. 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 detect

ed.

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

requested.

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

AMG4723

Instruction

Sheet

D16804

00.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 receivi

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 on 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) pr

esent on OUT+

Red

logic transitions present on OUT+

Off

logic one (

V) present on OUT+

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

AMG4723

Instruction

Sheet

D16804

00.doc

Physical Information

Dimensions

Height

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

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

112mm

Width

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

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

170mm (excluding connectors)

Depth

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

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

0mm

Weight

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

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

750grams

Mounting Details

The AMG unit is supplied with a clip

on mounting bracket which should be attached to a panel or wall

using 2 off 4.0mm screws, see diagram on page 1 for dimensions. The unit is clipped into the

mounting bracket, and i

s then held firmly in position.

Removal / 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, wris

t straps) when

handling the PCB.

To remove 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 accordan

ce with EN 60825

2:2000.

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 a

t other people.



Use only approved filtered 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 products. 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

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 i

ts use.

Page

AMG4723

Instruction

Sheet

D16804

00.doc

This page is intentionally blank.

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