AMG Systems AMG2783R-DR User manual

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 AMG2783R-DR Instruction
Sheet D15232-00
AMG2783R-DR
Instruction Manual
Eight Channel Video Transmit Unit with Bi-directional Data
with Dual Redundant Operation on a dual fibre ring
AMG2783R-DR is a rackmount eight channel video transmit unit designed to transmit eight video
signals onto a dual fibre optical fibre ring. It also provides a RS485/RS422 bi-directional data channel
to the video receiver. The AMG2783R-DR is designed to plug into an AMG2000 or an AMG2005
subrack which in turn fits into a 19” rack system.
The AMG2783R-DR is designed to operate with an AMG2784-DR 8 channel video and bi-directional
data receive unit or their rackmount equivalents.
Index Page No.
Introduction.......................................................................................................... 2
Unit Functional Schematic................................................................. 2
Optical System Connection............................................................... 2
Connections ......................................................................................................... 3
Video Output connections................................................................. 3
Optical Connections.......................................................................... 3
Power Connections ........................................................................... 4
Data Connections.............................................................................. 4
Indicators ........................................................................................................... 5
Physical Information ........................................................................................... 5
Dimensions........................................................................................ 5
Mounting Details................................................................................ 6
Configuration of the RS422/RS485 Data Channel ............................................ 6
SW1 Switch Settings ........................................................................................... 6
Removal from the Case....................................................................................... 7
Safety ........................................................................................................... 7
Maintenance and Repair ..................................................................................... 7
2783R-DR
AMG
PRIMARY OPTO SYNC
TX O O RX
SECONDARY OPTO SYNC
TX O O RX
VIDEO PRESENT
CH1 O O CH2
CH3 O O CH4
CH1 O O RX
DATA PRESENT
-------------------------
8 CH VIDEO TX
+
DATA TX/RX
POWER
OPOWER O
VIDEO PRESENT
CH5 O O CH6
CH7 OCH8
CH1 O O RX
DATA PRESENT
+





V
I
D
E
O
OPTO IN D
A
T
A
CH 5
CH 6
CH 7
CH 8 CH 4
CH 3
CH 2
CH 1
OPTO
OUT
MANAGEMENT
PORT





D
A
T
A
PRIMARY
OPTO
IN
SECO NDA RY
OPTO
OUT
OPTO
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 2of 7 AMG2783R-DR Instruction
Sheet D15232-00
Introduction
Unit Functional Schematic
The AMG2783R DR receives a 1310nm optical signal
from both a primary and secondary fibre input. It inserts
up to 8 video signals and data and receives a single data
channel signal transmitted from AMG2784-DR receiver.
In normal operation the data signal is taken from the
primary input and the video and data transmitted out on
the primary output. The secondary optical input is
independent and is regenerated on the secondary output.
If the primary input signal is not present, the 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 signal on its secondary
output. This signal will be repeated around the ring to get back to this AMG2783R-DR. 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 video and data transmission.
If the secondary input signal is not present, the unit will assume that the route to the next unit is not
OK and send out the video and data signal on the secondary optical output. This return data will be
transmitted to the next unit around the ring in the opposite direction on the secondary route.
Optical System Connection
The AMG2783R-DR units are designed to be connected in a point to point system with an
AMG2784R-DR. The optical dynamic range between each optically connected node is 17dB.
Note that where necessary repeaters can be added to increase transmission distances.
The AMG2784R-DR is connected as illustrated below when used with an AMG2783R-DR 8 channel
insert unit.
2784R-DR
2700 optics (Primary)
TX
RX
2700 optics
(Secondary) RXTX
1310nm
1310nm 1310nm
1310nm
8 Video Outputs 1 Data I/O
PRIMARY
OPTO IN
Primary Signal Direction
Secondary Signal Direction
SECONDARY
OPTO OUT PRIMARY OPTO OUT
SECONDARY
OPTO IN
( to primary input and
secondary output of next
2783-1,2,4-DR,or 2783-DR)
( From primary output and
secondary input of previous
2783-1,2,4-DR,or 2783-DR)
1
3
8
2
1
3
2
8
2784R-DR
AMG
PRIMARYOPTO SY NC
TXO O RX SECONDARY O PTO SYNC TXO O RX
VIDEOPRE SENT
CH1 O OCH2
CH3 O OCH4
CH1 O OR X
DATA PRESENT
-------------------------
8CH VIDEO RX
+
DATATX/RX
POWER
O
POWER
O
VIDEOPRE SENT
CH5 O OCH6
CH7 OCH8
CH1 OO RX
DATA PRESENT
+
Secondary Optical Fibre
Primary Optical Fibre
2783R-DR
AMG
PRIMARY OPTOSYNC
TX
O
O
RX
SECONDARYOPTO SYNC
TX
O
O
RX
VIDEOPRESENT
CH1
O O
CH2
CH3
O O
CH4
CH1
O O
RX
DATAPRESENT
-------------------------
8 CH VIDEO RX
+
DATATX/RX
POWER
O
POWER
O
VIDEOPRESENT
CH5
O O
CH6
CH7
O
CH8
CH1
O
O
RX
DATAPRESENT
+

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 AMG2783R-DR Instruction
Sheet D15232-00
If one of the routes is broken, operation of the system is maintained as shown below:
Or:
Connections
Video Input Connections
Connector ...........................................75 ohm BNC Socket.
Input Impedance..................................75 ohm terminated.
Input Level ...........................................1 volt p-p nominal
Frequency Response ..........................10Hz to 5.75MHz min.
No of channels.....................................8
Optical Connections
PRIMARY OPTO OUT
Connector............................................FC/PC
Optical Launch Power .........................-5dBm
Wavelength..........................................1310nm
PRIMARY OPTO IN
Connector............................................FC/PC
Optical Sensitivity................................-22dBm
Wavelength..........................................1310nm
SECONDARY OPTO OUT
Connector............................................FC/PC
Optical Launch Power .........................-5dBm
Wavelength..........................................1310nm
1
3
8
2
1
3
2
8
2784R-DR
AMG
PRIMARYOPTO SY NC
TX O O RX SECONDARY OPTO SYNC TXO O RX
VIDEOPRE SENT
CH1 OO CH2
CH3 OO CH4
CH1 O OR X
DATA PRESENT
-------------------------
8CH VIDEO RX
+
DATATX/RX
POWER
O
POWER
O
VIDEOPRE SENT
CH5 O OCH6
CH7 OCH8
CH1 O ORX
DATA PRESENT
+
Secondary Optical Fibre
Primary Optical Fibre
2783R-DR
AMG
PRIMARY OPTOSYNC
TX
O
O
RX
SECONDARYOPTO SYNC
TX
O
O
RX
VIDEOPRESENT
CH1
O O
CH2
CH3
O O
CH4
CH1
OO
RX
DATAPRESENT
-------------------------
8 CH VIDEO RX
+
DATATX/RX
POWER
O
POWER
O
VIDEOPRESENT
CH5
O O
CH6
CH7
O
CH8
CH1
O
O
RX
DATAPRESENT
+
1
3
8
2
1
3
2
8
2784R-DR
AMG
PRIMARYOPTO SY NC
TX O O RX
SECONDARYO PTO SYNC
TXO O RX
VIDEOPRE SENT
CH1 OO CH2
CH3 OO CH4
CH1 O OR X
DATA PRESENT
-------------------------
8CH VIDEO RX
+
DATATX/RX
POWER
OPOWER O
VIDEOPRE SENT
CH5 O OCH6
CH7 OCH8
CH1 O ORX
DATA PRESENT
+
Primary Optical Fibre
2783R-DR
AMG
PRIMARY OPTOSYNC
TX
O
O
RX
SECONDARYOPTO SYNC
TX
O
O
RX
VIDEOPRESENT
CH1
O O
CH2
CH3
O O
CH4
CH1
OO
RX
DATAPRESENT
-------------------------
8 CH VIDEO RX
+
DATATX/RX
POWER
O
POWER
O
VIDEOPRESENT
CH5
O O
CH6
CH7
O
CH8
CH1
O
O
RX
DATAPRESENT
+

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 AMG2783R-DR Instruction
Sheet D15232-00
SECONDARY OPTO IN
Connector............................................FC/PC
Optical Sensitivity................................-22dBm
Wavelength..........................................1310nm
Power Connection
Power supply.......................................from plug in connection on the 2000 or 2005 subrack
Power consumption .............................20 Watts max.
Data Connections
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
Data Channels .....................................2 channels, one associated with video channels 1 to 4 and the
second associated with video channels 5 to 8. The data into the
AMG2784R is broadcast out to the respective insert units. The
return data from the insert units is logically OR’ed together to
provide two data return signals respectively. When the 2784R is
used with a management card, as in a 2784RN, these two data
channels are combined and presented on either rear panel
connector. See the instruction sheet for the 2700 Management
card for how to separate out the data channels in the two
banks.
Connections RS422 4 wire..................See schematic
Connections RS485 4 wire..................See schematic
Protocol................................................RS485 2wire (switch selectable SW2)
RS422 4 wire Bus’ed or point to point (switch selectable SW2)
See below for Configuration of the RS485 / RS422 data channel and description of tristate
operation





OPTO IN D
A
T
A
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 +





D
A
T
A
Channels 5 to 8
Pin 5 – Ground
Pin 4 – No Connection
Pin 3 – No Connection
Pin 2 – Data In/Out –
Pin 1 – Data In/Out +





OPTO IN D
A
T
A
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 +
D
A
T
A

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 AMG2783R-DR Instruction
Sheet D15232-00
Indicators
Power...................................................Green – unit powered
Off – no power applied to unit
Primary Opto Sync TX.........................Green - optical channel transmitting
Off - optical channel not transmitting
Primary Opto Sync RX ........................Green - optical channel receiving
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
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
Physical Information
Dimensions
Height ..................................................3U Plug-in
Width....................................................21HP
Depth ...................................................170mm excluding connectors
Weight..................................................1100grams

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 AMG2783R-DR Instruction
Sheet D15232-00
Mounting Details
The unit is designed to be mounted within a 2000 or 2005 Subrack on standard card guides. Note the
AMG standard racks are supplied with guide rails every 7HP. In order to fit this unit in the subrack, 2
sets of card guides have to be removed by pulling gently on the card guides.
The 2000 series subrack is fitted with a 50 watt power supply. A maximum of 2 units may be fitted into
one 2000 series subrack.
The 2005 series subrack is fitted with a 100 watt power supply. A maximum of 3 units may be fitted
into one 2005 series subrack limited by the 70HP rack space.
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 the AMG2700
equipment detects a tri-state condition, then these resistors should have a value above 1kohm.
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 ON
6 Not Used OFF
7 Not Used OFF
8 On board data / Separate data card ON

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 AMG2783R-DR Instruction
Sheet D15232-00
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 ON
6 Not Used OFF
7 Not Used OFF
8 On board data / Separate data card ON
Removal from the Case
Note: - The 2700 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 2700 series of products uses a Class 1 laser system 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 the optical fibres systems see EN
60825-2:2000 or your local safety officer.
Maintenance and Repair
There are no user serviceable parts within the AMG2700 products.
In case of problem or failure contact your local support centre or AMG Systems Ltd, Technical Support
Department on tel. [phone].
See unit data sheet for full specification.