AMG 4688AR 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
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AMG4688AR
Instruction
Sheet
D18179
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01.doc
AMG4688AR
Instruction Manual
8 Channel Video Receive Unit with up to 8 Bi
-
directional
Data and Audio Channels
The
AMG4688AR
is a rackmount eight channel video receive unit designed to transmit 8 video signals
and transmit and receive up to 8 d
ata or audio signals over two singlemode fibres. The 8 data/audio
channel interfaces, whether RS232, RS422, RS485, 20mA, TTL, Contact Closure, Lonworks or Audio,
are defined at manufacture by the addition of daughter boards fitted onto the Data Expansion B
oard A.
The
AMG4688AR
is designed to plug into an AMG2009 or AMG2015 subrack, which in turn fits into a
19" rack system.
The
AMG4688AR
is designed to operate with
AMG4687A
or rackmount equivalent
AMG4687AR
eight channel video transmit 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 ac
curate. No responsibility is assumed by AMG for its use.
Page
2
of
12
AMG4688AR
Instruction
Sheet
D18179
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01.doc
Contents
Introduction
3
Unit Functional Schematic
................................
................................
................................
..................
3
Optical Connection
................................
................................
................................
.............................
3
Connections
4
Video O
utput Connections
................................
................................
................................
..................
4
Optical Connections
................................
................................
................................
...........................
4
Power Connection
................................
................................
................................
..............................
4
Data Channel Connections
................................
................................
................................
.................
4
Data and Audio Channel Configuration
5
Data Interface Daughter Board Options
................................
................................
.............................
5
Data and Audio Channel Configuration
................................
................................
..............................
5
Daughter Board Layout
................................
................................
................................
......................
5
Data and Audio Daughter Board Fitting Inst
ruction
................................
................................
............
5
Data and Audio Connections
................................
................................
................................
..............
6
Front Panel Indicators
7
Power LED
................................
................................
................................
................................
..........
7
Video Output LED’s
................................
................................
................................
............................
7
Fibre Opt
ic LED’s
................................
................................
................................
...............................
7
Low Speed Data LEDs
................................
................................
................................
.......................
7
Physical Information
9
Dimensions
................................
................................
................................
................................
.........
9
Mounting Details
................................
................................
................................
................................
.
9
Removal / replacem
ent from / to the Case
................................
................................
.........................
9
Safety
9
Maintenance and Repair
9

AMG Systems Ltd. reserves the right to make cha
nges to this
document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
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of
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AMG4688AR
Instruction
Sheet
D18179
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01.doc
Introduction
Unit Functional Schematic
The
AMG4688AR
drops off up to 8 video
and 8 data and audio signa
ls transmitted
from the
AMG4687A
.
It also transmits up to 8 data and audio
channels to the
AMG4687A
.
Optical Connection
The
AMG4688AR
is connected as illustrated below when used with an
AMG4687AR
8
-
channel
transmit unit acting as a point to point sys
tem.

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.
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Instruction
Sheet
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Connections
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
Connector
................................
............
LC/PC
Prim
ary Optical Launch Power
............
-
5dBm
Wavelength
................................
..........
1310nm
Optical Fibre
................................
........
Multimode 50/125 or 62.5/125**
PRIMARY OPTO IN
Connector
................................
............
LC/PC
Primary Optical Sensitivity
...................
-
22dBm
Wavelength
................................
..........
1310nm
Optical Fibre
................................
........
Multimode 50/125 or 62.5/125**
**Note: the transmission dista
nce 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
2km. although in most cases the units will operate successfully over longer f
ibre lengths. It is
advisable however for distances greater than 2km, to have the optical fibre tested.
Power Connection
Power supply
................................
.......
from plug in connection on the AMG2009 / AMG2015 subrack
Power consumption
.............................
15 Watts max.
Data Channel Connections
Tot
al No. of Data Channels
.................
8 channels
Data/Audio Channels
–
BANK A
.........
8 channels
Data/Audio Channels
–
BANK B
.........
Not Used
Connector
................................
............
37
-
way D
-
Type female connector
-
shielded.
Connections
................................
.........
See below for connection and configuration
For the data or audio channels to
be present, the appropriate data daughter boards have to be fitted
into the data expansion board slots.

AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accurate. No re
sponsibility is assumed by AMG for its use.
Page
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AMG4688AR
Instruction
Sheet
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Data and Audio Channel Configuration
The
AMG4688A
and rackmount equivalent
AMG4688AR
sends and receives data in one bank
-
Bank
A. Bank B is not use
d. The physical interface is determined by the fitting of AMG data or audio
daughter boards onto the appropriate data expansion board slots.
Data Interface Daughter Board Options
The data interface 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 Data Interface Daughter Board
4
X12579
TTL Data Interface Daug
hter Board
5
X12578
Contact Closure Data Interface Daughter Board
6
X13038
FTT10A Echelon Lonworks Data Interface Daughter Board
Data and Audio Channel Configuration
The data expansion board slots are accessed by removing the AMG unit from its case. A
data channel
is active when a daughter board is installed in the required data channel slot. Each data interface
board enables one bi
-
directional channel.
Daughter Board Layout
The channel slots are as follows:
Data and Audio Daughter Board Fittin
g Instruction
The data and audio daughter boards pushed on to the pin headers mounted on the data expansion
boards. Ensure that the connectors are lined up correctly and not offset before pushing firmly in place.
Note that the data and audio channel number
s are associated with each slot. This allocates the pin
numbers on the rear panel connector together with the front panel LED indicators.

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.
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Instruction
Sheet
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Data and Audio Connections
The BANK A data/audio channels pin connections on the rear panel connectors are as follow
s:
Pin
No.
Description
Bank
Pin
No.
Description
Bank
1
Audio/Data CH1 IN + (A)
A
20
Audio/Data CH1 OUT + (A)
A
2
Audio/Data CH1 IN
-
(B)
A
21
Audio/Data CH1 OUT
-
(B)
A
3
Audio/Data CH2 IN + (A)
A
22
Audio/Data CH2 OUT + (A)
A
4
Audi
o/Data CH2 IN
-
(B)
A
23
Audio/Data CH2 OUT
-
(B)
A
5
Audio/Data CH3 IN + (A)
A
24
Audio/Data CH3 OUT + (A)
A
6
Audio/Data CH3 IN
-
(B)
A
25
Audio/Data CH3 OUT
-
(B)
A
7
Audio/Data CH4 IN + (A)
A
26
Audio/Data CH4 OUT + (A)
A
8
Audio/Da
ta CH4 IN
-
(B)
A
27
Audio/Data CH4 OUT
-
(B)
A
9
GND
A
28
GND
A
10
GND
A
29
GND
A
11
GND
A
30
Audio/Data CH5 OUT + (A)
A
12
Audio/Data CH5 IN + (A)
A
31
Audio/Data CH5 OUT
-
(B)
A
13
Audio/Data CH5 IN
-
(B)
A
32
Audio/Data CH6 OUT +
(A)
A
14
Audio/Data CH6 IN + (A)
A
33
Audio/Data CH6 OUT
-
(B)
A
15
Audio/Data CH6 IN
-
(B)
A
34
Audio/Data CH7 OUT + (A)
A
16
Audio/Data CH7 IN + (A)
A
35
Audio/Data CH7 OUT
-
(B)
A
17
Audio/Data CH7 IN
-
(B)
A
36
Audio/Data CH8 OUT +
(A)
A
18
Audio/Data CH8 IN + (A)
A
37
Audio/Data CH8 OUT
-
(B)
A
19
Audio/Data CH8 IN
-
(B)
A
Note: (A) or (B) in brackets in above table refers to RS485/RS422 data specification not Bank A, B.
See Data or Audio Daughter Board Instruction S
heet for meaning of Audio/Data IN+, Audio/Data IN
-
Audio/Data OUT+, and Audio/Data OUT
-
for each data type.

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
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Instruction
Sheet
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Front Panel Indicators
Power LED
Power
................................
..................
Green
-
unit powered
Off
-
no power applied to unit
Video Output LED’s
Video Present CH1
-
8
..........................
Green
-
vid
eo 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 transmitting
Primary Opto Sync RX
........................
Gr
een
-
optical channel receiving
Org
-
optical channel receiving but not sync.
Off
-
optical channel not transmitting
Low Speed Data LEDs
BANK A
(When RS232 data daughter board fitted)
Data Present CH1
-
8 TX
......................
Green
-
logic zero (+V) present on IN+
Red
-
logic transitions present on IN+
Off
-
logic one (
-
V) present on IN+
This represents the data signals being transmitted on the optical fibre
Data Present CH1
-
8 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
BANK A
(When RS485 / RS422 data daughter board fitted)
Data Present CH1
-
8 TX
......................
Green
-
logic zero (+V,
-
V) present on IN+, IN
-
Red
-
logic transitions pre
sent 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 CH1
-
8 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
BANK A
(When audio daughter board fitted)
Audio Present TX
................................
Green
-
audio present >
-
40dBm
Red
-
audio present > 0dBm (overload at +6dB
m)
Off
-
audio not present or <
-
40dBm
This represents the audio signals being transmitted 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
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Instruction
Sheet
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Audio Present RX
................................
Green
-
audio present >
-
40dBm
Red
-
audio present > 0dBm (overload at +6dBm)
Off
-
audio not present or <
-
40dBm
This re
presents 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
9
of
12
AMG4688AR
Instruction
Sheet
D18179
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01.doc
Physical Information
Dimensions
Height
................................
..................
3U Plug
-
in
Width
................................
...................
21HP
Depth
................................
...................
170mm excluding connectors
Weight
................................
.................
1200grams
Mounting Details
The unit is designed to be mounted within an AMG2009 or AM
G2015 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 examp
le, 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 poin
t 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
Th
ere 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, Biggleswa
de, Beds., SG18 8QB, UK.
Phone
[phone]
Technical Support
[phone]
Email
[e-mail]

AMG Systems Ltd. reserves the right to make changes to this
document with
out notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page
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of
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AMG4688AR
Instruction
Sheet
D18179
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01.doc
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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.
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AMG4688AR
Instruction
Sheet
D18179
-
01.doc
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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.
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AMG4688AR
Instruction
Sheet
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