AMG AMG3604N-DR 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 11

AMG3604N-DR Instruction Sheet

D19005-00.doc

AMG3604N-DR

Instruction Manual

Single Channel Receive Unit with Bi-directional Data

Channel for a Dual Redundant fibre ring - includes AMG

NMS Network Management Interface

The AMG3604N-DR is a standalone single channel receive unit designed to transmit and receive one

bi-directional data channel to multiple AMG3603-DR units via a low speed data interface on a

multimode optical fibre ring with Dual Redundant operation.

The AMG3604N-DR is designed to be powered using an AMG2003 standalone power supply.

The AMG3604N-DR is designed to operate with an AMG3603-DR or rackmount equivalent

AMG3603R-DR data receive unit.

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 11

AMG3604N-DR Instruction Sheet

D19005-00.doc

Contents

Introduction 3

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

Dual Redundant Operation................................................................................................................. 3

Connections 5

Power Connection .............................................................................................................................. 5

Data and Audio Channel Connections ............................................................................................... 5

Data and Audio Channel Configuration 6

Data and Audio Channel Configuration.............................................................................................. 6

Data Interface Connections Channel A.............................................................................................. 6

Data Channel A Configuration............................................................................................................ 6

Front Panel Indicators 7

Power LED.......................................................................................................................................... 7

Fibre Optic LED’s ............................................................................................................................... 7

Network Management 8

NMS Operation................................................................................................................................... 8

SNMP ................................................................................................................................................. 8

Network Alarm Port ............................................................................................................................ 8

The Management Interface ................................................................................................................ 8

Alarm Output and Reset Operation.................................................................................................. 10

Physical Information 11

Dimensions....................................................................................................................................... 11

Mounting Details............................................................................................................................... 11

Removal / replacement from / to the Case....................................................................................... 11

Safety 11

Maintenance and Repair 11

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 11

AMG3604N-DR Instruction Sheet

D19005-00.doc

Introduction

Unit Functional Schematic

The AMG3604N-DR transmits

and receives the optical signals

from both a primary and

secondary optical channel.

These optical channels are

transmitted on two optical fibre in

opposite directions, operating at

1310nm.

The AMG3604N-DR receives and drops off data signals transmitted from AMG3603-DR insert units. It

then inserts data signals onto the outgoing optical signal to AMG3603-DR insert units.

As each unit regenerates the optical signal, the optical dynamic range between each optically

connected node is 17dB.

Dual Redundant Operation

In normal operation where optical connection to both the previous unit and subsequent insert units is

OK, data signals are transmitted on the primary output and data is received from the primary input.

The secondary optical input is independent and is regenerated on the secondary output.

If the primary input signal is not present, a unit will shut down the secondary output to inform the

previous unit that the signal route is not OK. The previous unit will then send out the data signals on its

secondary output in the opposite direction. This signal will be repeated around the ring to get back to

this unit on the secondary route. As the primary input is not present on this unit, the data signal will

now be taken from the secondary optical input thus maintaining integrity of the data transmission.

If the secondary input signal is not present, an insert unit will assume that the route to the next unit is

not OK and send out the data signal on the secondary optical output. This data will be transmitted to

the next unit around the ring in the opposite direction on the secondary route.

The AMG3604N-DR or rackmount AMG3604RN-DR is designed to be connected in a ring or point to

point system.

1310nm

RS485/422/232

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 11

AMG3604N-DR Instruction Sheet

D19005-00.doc

If a fibre link is broken, operation of the ring continues by making use of the secondary optical fibre

route as below:

If multiple breaks occur, operation is maintained with all the units still physically connected to the

receiver.

RS485/422/232

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 11

AMG3604N-DR Instruction Sheet

D19005-00.doc

Connections

Optical Connections

PRIMARY OPTO OUT

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

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

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

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

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

PRIMARY OPTO IN

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

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

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

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

Wavelength..........................................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 Multimode fibre is

500m, although in most cases the units will operate successfully over longer fibre lengths. It is

advisable however for distances greater than 500m, to have the optical fibre tested.

Power Connection

Connector Type...................................2.1mm screw lock long power jack –centre positive

Connector Partno. ...............................Switchcraft S761K, AMG G16125-00

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 (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 6 of 11

AMG3604N-DR Instruction Sheet

D19005-00.doc

Data and Audio Channel Configuration

The AMG3604N-DR and rackmount equivalent AMG3604RN-DR 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

RJ45 Pin

No.

Channel A

Cat 5/6 Cable

Colour Code T568B

RS485

[switch high]

RS422

[switch mid]

RS232

[switch low]

IN + (A)

GND

White/orange

IN - (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 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 7 of 11

AMG3604N-DR Instruction Sheet

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Front Panel Indicators

Power LED

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

Off - no power applied to unit

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 receiving

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

Off - optical channel not transmitting

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

Org - optical channel receiving but not sync.

Off - optical channel not receiving

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 8 of 11

AMG3604N-DR Instruction Sheet

D19005-00.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 9 of 11

AMG3604N-DR Instruction Sheet

D19005-00.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

Data B (+)

RD (data out of port)

Data A (-)

TD (data into port)

Connect to DTR held –ve or shorted

to ground

SG (signal ground)

SG (signal Ground)

Alarm Output

Alarm reset (Gnd)

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

2 or 4

B+

3 or 5

A-

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 10 of 11

AMG3604N-DR Instruction Sheet

D19005-00.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.

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