AMG AMG4783RN-CWDMn 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 1 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

AMG4783RN-

CWDMn

Instruction Manual

8 Channel Video Transmit Unit with 1 Bi-directional Data

Channel for a CWDM Fibre Link - includes AMG NMS

Network Management Interface

The AMG4783RN-CWDMn is a rackmount eight channel video transmit unit designed to transmit 8

video signals and transmit and receive 1 data signal over two Singlemode fibres. The AMG4783RN-

CWDMn transmits on a CWDM wavelength defined by the 'n' in the CWDMnpartno. as detailed in the

following table, but can receive from any 1310nm or 1550nm band wavelength.

The AMG4783RN-CWDMn is designed to plug into an AMG2009 or AMG2015 subrack, which in turn

fits into a 19" rack system. It also includes an AMG Management Interface to allow management of the

system using the AMG SNMP enabled Management software.

The AMG4783RN-CWDMn is designed to operate with AMG4784N-CWDMn or rackmount equivalent

AMG4784RN-CWDMn eight 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 2 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Contents

Introduction 3

Unit Functional Schematic.................................................................................................................. 3

Standard AMG CWDM Wavelengths ................................................................................................. 3

Optical Connection ............................................................................................................................. 3

Connections 4

Video Input Connections .................................................................................................................... 4

Optical Connections ........................................................................................................................... 4

Power Connection .............................................................................................................................. 4

Data and Audio Channel Connections ............................................................................................... 4

Data and Audio Channel Configuration 5

Data and Audio Channel Configuration.............................................................................................. 5

Data Interface Connections Channel A .............................................................................................. 5

Data Channel A Configuration............................................................................................................ 5

Front Panel Indicators 6

Power LED.......................................................................................................................................... 6

Video Input LED’s............................................................................................................................... 6

Fibre Optic LED’s ............................................................................................................................... 6

Low Speed Data LEDs ....................................................................................................................... 6

Network Management 7

NMS Operation ................................................................................................................................... 7

SNMP ................................................................................................................................................. 7

Network Alarm Port ............................................................................................................................ 7

The Management Interface ................................................................................................................ 7

Alarm Output and Reset Operation .................................................................................................... 9

Physical Information 10

Dimensions ....................................................................................................................................... 10

Mounting Details............................................................................................................................... 10

Removal / replacement from / to the Case....................................................................................... 10

Safety 10

Maintenance and Repair 10

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 3 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Introduction

Unit Functional Schematic

The AMG4783RN-CWDMn transmits up to 8

video and 1 data and audio signals to the

AMG4784RN-CWDMn receive unit using a

wavelength defined by 'n' in the CWDMnpartno.

The example shown in the schematic is where 'n'

= 1, i.e. the Tx wavelength is 1510nm.

It also receives up to 1 data and audio channels

transmitted on any 1310nm or 1550nm band

wavelength from the AMG4784RN-CWDMn.

Standard AMG CWDM Wavelengths

CWDM

n/m

Wavelength

(nm)

CWDM

n/m

Wavelength

(nm)

CWDM

n/m

Wavelength

(nm)

CWDM

n/m

Wavelength

(nm)

1 1510 5 1470 9 1310 13 1390

2 1530 6 1490 10 1330 14 1410

3 1550 7 1590 11 1350 15 1430

4 1570 8 1610 12 1370 16 1450

For CWDM wavelengths 11-14, ITU-T G652C or D fibre is recommended.

Optical Connection

The AMG4783RN-CWDMn is connected as illustrated below when used with an AMG4784RN-

CWDMn 8-channel receive unit acting as a point to point system.

Alternatively, the AMG4783RN-CWDMn and AMG4784RN-CWDMn may be interconnected with

additional system units operating at different optical wavelengths on the same fibre using external

couplers.

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 4 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Connections

Video Input Connections

No. of channels....................................8

Connector ............................................75 ohm BNC Socket.

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

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

Frequency Response...........................10Hz to 7MHz.

Optical Connections

PRIMARY OPTO OUT

Connector ............................................LC/PC

Primary Optical Launch Power ............0dBm

Wavelength..........................................Defined by 'n' in the AMG Partno.

Optical Fibre ........................................Singlemode

PRIMARY OPTO IN

Connector ............................................LC/PC

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

Wavelength..........................................Any 1310nm or 1550nm band

Optical Fibre ........................................Singlemode

Optical Overload ..................................-5dBm

NOTE: The optical launch power may overload the input of an AMG receiver if connected directly. A

minimum of 5dB loss is required to ensure correct operation.

Power Connection

Power supply .......................................from plug in connection on the AMG2009 / AMG2015 subrack

Power consumption .............................10 Watts max.

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 (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. The information herein is believed to

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

Page 5 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Data and Audio Channel Configuration

The AMG4783N-CWDMn and rackmount equivalent AMG4783RN-CWDMn 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 high]

RS422

[switch mid]

RS232

[switch low]

Cat 5/6 Cable

Colour Code T568B

1IN + (A) GND White/orange

2IN - (B) IN Orange

3 White/green

4 Blue

5 White/blue

6 Green

7IN/OUT + (A) OUT + (A) N/A White/brown

8IN/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 on 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 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 120Ω 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 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 750Ω the 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

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 6 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Front Panel Indicators

Power LED

Power...................................................Green - unit powered

Off - no power applied to unit

Video Input LED’s

Video Present CH1-8...........................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 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) present 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 7 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Network Management

Network Management of the system is provided by the AMG Management Interface which allows

Management using the AMG SNMP enabled Management software.

NMS Operation

Requires Network Management "N" option in each Rx (Receive) or Tx (Transmit) unit.

Recommended for Dual Redundant Options to give knowledge of failure

Rx collects information regarding all attached Tx units

Interface

9 Way D-type management port on each Rx or Tx

RS-232 or RS-485 on Management Port

Multiple Rx/Tx units use RS-485 and effectively parallel all the RS-485 ports together

Connect to PC RS-232 Port via RS-485/RS-232 convertor

Proprietary GUI

Loss of unit

Loss of Optical Input

Loss of Video Input

SNMP

SMNP Compatibility: SMNP Version 1

AMG3700 Device do NOT act as SNMP Agents

PC running AMG NMS software is the only 'true' SNMP Agent

Provides Proxy access to all AMG devices

SNMP Community String used to differentiate between AMG devices

Network Alarm Port

Alarm Output: Normally Closed

Opens when loss of :

Video at any insert node

Primary optical input at any node

Secondary optical input at any node

Any node through a power down

Power at the receiver

Closed by: Reset

The Management Interface

The Management Interface is fitted to AMG receivers / transmitters and is signified by a 'N' in the part

number

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 8 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Each management interface, thus each receiver or transmitter, has an ID number with is identified

below the management port. This ID number is used by the AMG Network Management System

(NMS) to identify the unit.

The physical interface is a 9 way female D-type connector. It supports either RS-232 or RS-485.

Management Port Pin-out:

Pin Number RS-232 Connection RS-485 Connection

1 - Data B (+)

2 RD (data out of port) Data A (-)

3 TD (data into port) -

4 Connect to DTR held –ve or shorted

to ground

5 SG (signal ground) SG (signal Ground)

6 Alarm Output Alarm Output

7 Alarm Output Alarm Output

8 Alarm reset (Gnd) Alarm reset (Gnd)

9 Alarm reset Alarm reset

For multiple Management Ports it is recommended that the RS-485 interface is used with each RS-

485 pair connected in parallel. In this case an RS-485 to RS-232 / USB converter is required in order

to connect to a standard PC Comms. Port.

The time delay between receiving a data request and sending out a response from the port is 625µs.

Therefore any RS-485 converter should have a 'turn around' time or 'transmit dwell' time equal to or

less than 625µs.

Recommended RS-485 Converter's are:

RS-485 to RS-232

Dataforth DCP485-S: Available in the UK from http://uk.farnell.com/ Order No. 300-9348

Settings on the DCP485-S:

RS-485 Switch Settings: 1-UP, 2-DOWN, 3-DOWN, 4-UP, 5-DOWN, 6-DOWN, 7-DOWN,

8-UP

RS-232 Switch Settings: 1-DOWN, 2-UP, 3-DOWN, 4-UP

DCE/DTE set to DCE.

RS-485 to USB

B&B 485USBTB-2W: Available in Europe from http://www.bb-europe.com/ Order No. 485USBTB-2W

Connections to management port:

Management

Port

DCP485-S 485USBTB-2W

1 2 or 4 B+

2 3 or 5 A-

5 GND GND

NOTES:

On the DCP485-S, pins 3 and 5 are connected together and pins 2 and 4 are connected together.

On the 485USBTB-2W, there are 2 pairs of terminals both labeled A-, B+, either pair may be used.

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 9 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Alarm Output and Reset Operation

The alarm output and reset is designed to indicate a change of state of the fibre loop or spur attached

to the receiver. The Alarm output is a volts free contact relay output (rating: 0.5A at 125VAC or 1A at

24VDC). It normally open, which means that when not powered the contacts will be open circuit.

On power up the contacts will close and will remain closed for up to 5 seconds. During this time the

receiver will monitor and record the state of the AMG transmit units connected to the receiver.

The contacts will then remain closed until there is a change from this recorded state. A change of state

would be:

Addition or loss of video at any insert node

Addition or loss of primary optical input at any node

Addition or loss of secondary optical input at any node

Power up or down of any node

Loss of power at the receiver

Following a change of state the contacts will remain open, regardless of whether the alarm condition

reverts back to its previous state, until the a reset signal is presented to the alarm input connections.

The alarm reset input is biased at 5V via a 1kΩ resistor. To reset the alarm, the alarm reset is required

to be pulled to ground, either by a volt-free contact or an open collector output. The alarm output will

be held in a closed state whilst the alarm reset is connected to ground.

On release of the alarm reset, the alarm output will remain in a closed state until the next change of

state to the AMG transmit unit connected to the receiver. The alarm output may not register a change

of state which happens within 5 seconds of release of the alarm reset.

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 10 of 12 AMG4783RN-CWDMn Instruction

Sheet D18318-00.doc

Physical Information

Dimensions

Height...................................................3U Plug-in

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.

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, wrist 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 accordance 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 at 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. at

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

Email techsupport@amgsystems.com

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