AMG AMG3784EBxR-DRCWDMn/m 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
1
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
AMG3784EBxR
-
DR
-
CWDMn/m
Instruction Manual
8 Channel Video Receive Unit with Bi
-
directional Data and
Audio Channels plus Ethernet for a Dual Redundant fibre
ring using CWDM
The
AMG3784EBxR
-
DR
-
CWDMn/m
is a rackmount eight channel video receive un
it designed to
receive 8 video signals from a single optical fibre ring with Dual Redundant operation. It also provides
bi
-
directional data channels via a low speed data interface, plus full duplex 100BaseT Ethernet
connectivity around the ring.
The
AMG3
784EBxR
-
DR
-
CWDMn/m
is designed to plug into an AMG2005 subrack, which in turn fits
into a 19" rack system.
The
AMG3784EBxR
-
DR
-
CWDMn/m
is designed to operate with
AMG3713EBx
-
DR
-
CWDMn/m
-
C
or
rackmount equivalent
AMG3713EBxD
-
DR
-
CWDMn/m
-
C
single channel video
, data and Ethernet
insert units. It may also be used with other combinations of single, dual and four channel video, data
and Ethernet insert units.
An
AMG3784EBxR
-
DR
-
CWDMn/m
receive unit will 'drop off' up to eight video channels which are
being transmi
tted around the fibre ring from up to eight single channel insert units, or from an
equivalent combination of multi
-
channel insert units.

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
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Contents
Introduction
3
Unit Functional Schematic
................................
................................
................................
..................
3
CWDM Operation
................................
................................
................................
...............................
3
Standard AMG CWDM Wavelengths
................................
................................
................................
.
3
Video Input Channel Configuration
................................
................................
................................
....
3
Dual Redundant Operation
................................
................................
................................
.................
4
Optical Co
nnection
................................
................................
................................
.............................
4
Connections
6
Data and Audio Channel Connections
................................
................................
...............................
6
Video Output Connections
................................
................................
................................
..................
6
Optical Connections
................................
................................
................................
...........................
6
Power Connection
................................
................................
................................
..............................
6
Ethernet Connection
................................
................................
................................
...........................
6
Ethernet Operation
7
Data and Audio Channel Configuration
8
Data and Audio Channel Configu
ration
................................
................................
..............................
8
Data Interface Connections Channel A
................................
................................
..............................
8
Data Channel A Configuration
................................
................................
................................
............
8
Data / Audio Channel B Configuration
................................
................................
...............................
9
Data Interface Dau
ghter Board Options
................................
................................
.............................
9
Audio / Data Interface Connections RJ45
-
Channel B
................................
................................
......
9
Front Panel Indicators
10
Power LED
................................
................................
................................
................................
........
10
Video Output LED’s
................................
................................
................................
..........................
10
Fibre Optic LED’s
................................
................................
................................
.............................
10
Low Speed Data LEDs
................................
................................
................................
.....................
10
Physical Information
12
Dimensions
................................
................................
................................
................................
.......
1
2
Mounting Details
................................
................................
................................
...............................
12
Removal / replacement from / to the Case
................................
................................
.......................
12
Safety
12
Maintenance and Repair
12

AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information her
ein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
3
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Introduction
Unit Functional Schematic
The
AMG3784EBxR
-
DR
-
CWDMn/m
transmits and receives optical signals from both a primary and a
secondary optical channel. The optical channels operate at wavelengths defined by '
n
' and '
m
' in the CWDM
n/m
part number and are transmitted on the same optical fibre in different
directions, using external optical couplers
to connect
3784EBxR
-
DR
-
CWDMn/m
to the single fibre loop.
A typical configuration is shown in the
schematic where
n
= 1,
m
= 2, the primary
channel operates on 1510nm and the
secondary channel on 1530nm.
The
AM
G3784EBxR
-
DR
-
CWDMn/m
receives up to 8 video, 2 data, and Ethernet
signals transmitted from
AMG3713EBx
-
DR
-
CWDMn/m
-
C
insert units. It also transmits
data and Ethernet signals back to the insert
units.
As each insert unit regenerates the optical signal of
the same wavelength, the optical dynamic range between
each optically connected node of the same wavelength is 22dB.
CWDM Operation
In a CWDM based system, each unit uses two distinct CWDM wavelengths. For example, in the case of a
CWDM1/2 unit, the wa
velengths used are CWDM1 (1510nm) for the primary and CWDM2 (1530nm) for the
secondary and they travel on the same optical fibre in different directions. See table below for details of available
CWDM wavelengths.
The
AMG3784EBxR
-
DR
-
CWDMn/m
is designed to
be connected into a single fibre loop using external
optical couplers to provide a pass
-
through functionality between the incoming and outgoing optical fibre for
signals at other wavelengths.
Since up to 16 distinct wavelengths can be transmitted on eac
h singlemode fibre, a maximum of 4 CWDM loops
can be connected onto a single fibre, dual redundant loop.
Standard AMG CWDM Wavelengths
CWDM Code
'n' or 'm'
Wavelength
(nm)
CWDM Code
'n' or 'm'
Wavelength
(nm)
1
1510
5
1470
2
1530
6
1490
3
1
550
7
1590
4
1570
8
1610
Video Input Channel Configuration

AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information her
ein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
4
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
At the
AMG3713EBx
-
DR
-
CWDMn/m
-
C
or rackmount
AMG3713EBxD
-
DR
-
CWDMn/m
-
C
insert unit,
video signals present at the BNC inputs can be inserted on one to eight video channels transmitted on the opt
ical
fibre. The first video channel number of each insert unit is set by the rotary switch on the front panel of the unit.
It is normal to set each insert unit to a different channel number. If the same number is used twice, an insert unit
connected 'down
stream' on the primary optical route will 'over
-
write' any coincident video channels coming
from the previous insert unit and those video signals will be lost.
The switch channel numbers 1 to 8, correspond to video channels 1
-
8. Unused switch channel num
bers 0 & 9
duplicate video channel selections 1 & 8 respectively. i.e. setting switch to position 0 or 1 selects video channel
1 and setting switch to position 8 or 9 selects channel 8.
Dual Redundant Operation
In normal operation where optical connecti
on to both the previous unit and subsequent insert units is OK, video
and 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 video and data signals on its secondary
output in the opposite di
rection. 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 da
ta 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 video and data signal on the secondary optical output. This video and data will be transmitted to the
next
unit around the ring in the opposite direction on the secondary route.
Optical Connection
The
AMG3784EBx
-
DR
-
CWDMn/m
or rackmount
AMG3784EBxR
-
DR
-
CWDMn/m
is designed to be
connected in a ring or point to point system.
In a ring system, single, dual and
four channel insert units respectively can be combined to make up an 8 channel
video transmission system as illustrated below.
If a fibre link is broken, operation of the ring continues by making use of the secondary optical fibre route as
below:

AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information her
ein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
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of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
If multiple breaks occur, operation is maintained with all the units still physically connected to the receiver. For
the scenario shown below camera signals and control would now be lost from cameras 1, 2 and 3 as there is now
no physical connection betwe
en the transceivers and the receiver. However operation of cameras 4,5,6,7 and 8
remains fully functional.
Note that where necessary repeaters can be added at nodes to increase the average distance between nodes.

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
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AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Connections
Data and Audio Channel
Connections
Total No. of Data Channels
.....................
2 channels
DATA CHANNEL A
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 c
onnections)
RS422
–
switch position
–
middle
RS485
–
switch position
–
low (furthest from BNC connections)
DATA CHANNEL B
Data Connector
................................
......
RJ45
Channel B Interface
................................
Defined by data/audio interface daughter board fitted into Slot 1 on
main board and indicat
ed by the 'x' in the AMG partno.
Video Output Connections
No. of channels
................................
......
8
Connectors
................................
............
75 ohm BNC Socket.
Output Impedance
................................
..
75 ohm terminated.
Output Level
................................
..........
1 Volt p
-
p nominal
Frequency Response
...............................
10Hz to 7MHz.
Optical Connections
PRIMARY OPTO OUT
Connect
or
................................
..............
LC/PC
Primary Optical Launch Power
................
-
1dBm
Wavelength
................................
...........
Defined by '
n
' in the AMG Partno.
Secondary Optical Sensitivity
..................
-
23dBm
Wavelength
................................
...........
Defined by '
m
' in the AMG Partno.
PRIMARY OPTO IN
Connector
................................
..............
LC/PC
Primary Optical Sensitivity
.....................
-
23dBm
Wavelength
................................
...........
Defin
ed by '
n
' in the AMG Partno.
Secondary Optical Launch Power
............
-
1dBm
Wavelength
................................
...........
Defined by '
n
' in the AMG Partno.
Through Loss
................................
.........
2dB (for channels not of '
n
' or '
m
' wavelengths)
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

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
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Ethernet Operation
In order for the A
MG system to transmit Ethernet signals, an onboard RJ45 Ethernet interface or X16003
Ethernet interface adaptor should be fitted to all units in the ring.
The Ethernet interface can operate at either 10Mbits/s half duplex, or 100Mbit/s full duplex. When
all the
Ethernet interfaces around the ring are operating at 100Mbit/s full duplex the system behaves as a multi
-
port
repeater. Data transmitted on any one port is transmitted out on all other ports with the minimum of delay or
buffering. The nominal bandw
idth available for Ethernet transmission within the ring is 100Mbit/s when
Ethernet only, or 50MBit/s when the low speed data option is also used. If one node is transmitting, the entire
bandwidth is available for this traffic. If multiple nodes transmit s
imultaneously on the ring, then the bandwidth
is shared between each node as required. With similar traffic at each node the sharing would be nominally equal.
Although the limit for the number of video channels which can be transmitted around the ring is
eight, up to 64
nodes can be attached for distributing Ethernet signals with the bandwidth sharing implemented. The units use
Flow Control (Pause Frames) to limit the access to the ring to share the bandwidth and to ensure that no data is
lost. When an Et
hernet port is operating at 10Mbits/s half duplex, this port will now only receive data from a
receive unit rather than all ports as when operating at 100Mbits/s full duplex.
The 100BaseT port does not implement MDI/MDIX; it should be connected with a str
aight 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 fo
r its use.
Page
8
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Data and Audio Channel Configuration
Data and Audio Channel Configuration
The
AMG3784EBx
-
DR
-
CWDMn/m
and rackmount equivalent
AMG3784EBxR
-
D
R
-
CWDMn/m
sends and
receives data to/from Channel A and Channel B. Channel A is a single data interface selectable by the user with
the slide switch on the rear panel. Channel B carries a second channel of data / audio, the function and physical
interface
being determined by the type of daughter board fitted to the B Channel data slot.
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
1
IN + (A)
GND
White/orange
2
IN
-
(B)
IN
Orange
3
White/green
4
Blue
5
White/blue
6
Green
7
IN/OUT + (A)
OUT + (A)
N/A
White/brown
8
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 sw
itch 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 RS
485 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 nega
tive 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 manufacturer
s 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 detec
ts 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 fo
r its use.
Page
9
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Data / Audio Channel B Configuration
Data Channel B is operational when fitted with the appropriate daughter board.
Data Interface Daughter Board Options
The data inte
rface daughter board options are as follows:
Option Code
'x'
Part No.
Description
0
X12542
4 Wire Audio Interface Daughter Board
1
X04057
RS422/485 Data Interface Daughter Board
2
X04049
RS232 Data Interface Daughter Board
3
X04058
20mA Current Loop D
ata Interface Daughter Board
4
X12579
TTL Data Interface Daughter Board
5
X12578
Contact Closure Data Interface Daughter Board
6
X13038
FTT10A Echelon Lonworks Data Interface Daughter Board
Audio / Data Interface Connections RJ45
-
Channel B
RJ45 C
hannel B low speed data/audio interface connections:
Channel B
RJ45 Pin
No.
Data / Audio
Daughter Board
Cat 5/6 Cable
Colour Code T568B
1
White/orange
2
Orange
3
OUT + (A)
White/green
4
IN
-
(B)
Blue
5
IN + (A)
White/blue
6
OUT
-
(B)
Green
7
White/brown
8
Brown
Note: (A) or (B) in brackets in above table refers to RS485 / RS422 data specification, not Channel A, Channel
B.

AMG Systems Ltd. reserves the right to make changes to this
document without noti
ce. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
10
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Front Panel Indicators
Power LED
Power
................................
....................
Green
-
unit powered
Off
-
no power applied to unit
Video Output LED’
s
Video Present CH1
-
8
..............................
Green
-
video signal present on output BNC
Org
-
channel present but no video on O/P BNC
Off
-
no video channel present
Fibre Optic LED’s
Primary Opto Sync TX
...........................
Green
-
optical channel transmitting
Off
-
optical channel not tran
smitting
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
Channel B
(When RS232 data daughter b
oard fitted)
Data Present TX
................................
.....
Green
-
logic zero (+V) present on IN+
Red
-
logic transitions present on IN+
Off
-
logic one (
-
V) present on IN+

AMG Systems Ltd. reserves the right to make changes to this
document without noti
ce. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
11
of
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AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
This represents the data signals being transmitted on the optical fibre
Data Present RX
................................
....
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
Channel B
(When RS485 / RS422 data daughter board fitted)
Data Present TX
................................
.....
Green
-
logi
c zero (+V,
-
V) present on IN+, IN
-
Red
-
logic transitions present on IN+, IN
-
Off
-
logic one (
-
V, +V) present on IN+, IN
-
This represents the data signals being transmitted on the optical fibre
Data Present RX
................................
....
Green
-
logic zero (+V,
-
V) present on
OUT+, OUT
-
Red
-
logic transitions present on OUT+, OUT
-
Off
-
logic one (
-
V , +V) present on OUT+, OUT
-
This represents the data signals being received on the optical fibre
Channel B
(When audio daughter board fitted)
Audio Present TX
................................
..
Green
-
audio p
resent >
-
40dBm
Red
-
audio present > 0dBm (overload at +6dBm)
Off
-
audio not present or <
-
40dBm
This represents the audio signals being transmitted on the optical fibre
Audio Present RX
................................
..
Green
-
audio present >
-
40dBm
Red
-
audio present > 0dBm (ove
rload at +6dBm)
Off
-
audio not present or <
-
40dBm
This represents the audio signals being received from 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
12
of
12
AMG3784EBxR
-
DR
-
CWDMnm
Instruction
Sheet
D16784
-
01.doc
Physical Information
Dimensions
Height
................................
...................
3U Plug
-
in
Width
................................
....................
14HP
Depth
................................
....................
170mm excluding connectors
Weight
................................
..................
1000grams
Mounting Det
ails
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 discharg
e
(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 unapprov
ed 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
[phone]
Technical Support
[phone]
Email
[e-mail]