AMG AMG4704E-SF 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
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
AMG4704E
-
SF
Instruction Manual
Data Receive Unit with Bi
-
directional Data Channel plus
Ethernet
The
AMG4704E
-
SF
is a standalone receive unit designed to transmit and receive 1 data signal plus
full duplex 100BaseT Ethernet connectivity over one
singlemode fibre.
The
AMG4704E
-
SF
is designed to be powered using an
AMG2003
standalone power supply.
The
AMG4704E
-
SF
is designed to operate with an
AMG4703E
-
SF
or rackmount equivalent
AMG4703ER
-
SF
data 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 accurate. No responsibility is assumed by AMG for its use.
Page
2
of
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
Contents
Introduction
3
Unit Functional Schematic
................................
................................
................................
..................
3
Optical Connection
................................
................................
................................
.............................
3
Ethernet Operation
................................
................................
................................
.............................
3
Connections
4
Power Connection
................................
................................
................................
..............................
4
Optical Connections
................................
................................
................................
...........................
4
Ethernet 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
Fro
nt Panel Indicators
6
Power LED
................................
................................
................................
................................
..........
6
Fibre Optic LED’s
................................
................................
................................
...............................
6
Low Speed Data LEDs
................................
................................
................................
.......................
6
Physical Information
7
Dimensi
ons
................................
................................
................................
................................
.........
7
Mounting Details
................................
................................
................................
................................
.
7
Removal / replacement from / to the Case
................................
................................
.........................
7
Safety
7
Maintenance and Repair
7

AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
b
e accurate. No responsibility is assumed by AMG for its use.
Page
3
of
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
Introduction
Unit Functional Schematic
The
AMG4704E
-
SF
transmits one data
signal to the
AMG4703E
-
SF
.
It also receives one data channel
transmitted from the
AMG4703E
-
SF
.
Ethernet connectivity is also provided
between the two units.
Optical Connection
The
AMG4704E
-
SF
is connected as illustrated below when used with an
AMG4703E
-
SF
data transmit
unit acting as a point to point system.
Ethernet Operation
In order for the AMG system to transmit Ethernet signals, an onboard RJ45 Ethernet interface
or
X16003 Ethernet interface adaptor should be fitted to both the Transmit unit and the Receive unit.
The Ethernet interface can operate at either 10Mbits/s half duplex, or 100Mbit/s full duplex, and data is
transmitted from one port the other port with t
he minimum of delay or buffering. The maximum
bandwidth (at 100Mbit/s full duplex) available for transmission across the fibre link is nominally
50MBit/s.
The 100BaseT port does not implement MDI/MDIX; it should be connected with a straight 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 ma
ke 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
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
Connections
Power Connection
Connector Type
................................
...
2.1mm screw lock long power jack
–
centre positive
Connector Partno.
................................
Switchcraft S761K, AMG G16125
-
00
Supply Volt
age
................................
.....
13.5 to 18.0 Volts DC.
Maximum Power
................................
.
5 Watts
Optical Connections
PRIMARY OPTO IN
Connector
................................
............
LC/PC
Optical Fibre
................................
........
One fibre
-
Singlemode
Primary Optical Launch Power
............
-
5dBm
Wavelength
................................
..........
1310nm
Primary Optical Sensitivity
...................
-
22dBm
Wavelength
................................
..........
1550nm
Eth
ernet 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
Data and Audio Channel Connections
DATA CHANNEL A
Data Channel A
................................
...
1 channel
Data Co
nnector
................................
....
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 connections)
RS422
–
switch position
–
middle
RS485
–
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
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
Data and Audio Channel Configuration
Data and Audio Channel Configuration
The
AMG4703E
-
SF
and rackmount equivalent
AMG4703ER
-
SF
sends and receives data to/from
Channel A. Ch
annel 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 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 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 Boa
rd 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 co
ndition. A level above 600mV positive or negative will be
detect
ed 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 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 cond
ition, then these resistors should have a value above 5k
Ω. If the third party
bias resistors are less the 750Ωthe 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
r
equested.

AMG Systems Ltd. reserves the right to make changes to this
document without notice. The information herein is believed to
be accur
ate. No responsibility is assumed by AMG for its use.
Page
6
of
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
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 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+) pre
sent 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 si
gnals 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)
...................
Gre
en
-
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 chan
ges 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
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
Physical Information
Dimensions
Height
................................
..................
112mm
Width
................................
...................
170mm (exclud
ing connectors)
Depth
................................
...................
70mm
Weight
................................
.................
750grams
Mounting Details
The AMG unit is supplied with a clip
-
on mounting bracket which should be attached to a panel or wall
using 2 off 4.0mm screws, see diagram on page 1 for dimensions. The unit is clipped into the
mounting bracket, and is then held firmly in position.
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 protec
tion (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 fib
res 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 la
ser 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.
Maintenanc
e 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]

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
8
AMG4704E
-
SF
Instruction
Sheet
D18079
-
01.doc
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