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 3 AMG2780R-DR-CWDMn
Instruction Sheet D15339-
00
AMG2780R-DR-CWDMn
Instruction Manual
2700 Series Repeater for use on a Dual Redundant dual fibre
ring using CWDM wavelengths
The AMG2780R-DR-CWDMn is a rackmount repeater designed to operate in a dual fibre dual
redundant loop at a CWDM wavelength ‘n’. It is designed to plug into a standard AMG2000 or
AMG2005 rackmount system.
Functional Description
The AMG2780R-DR-CWDMn receivesan optical signal
from both a primary and secondary optical input.
In normal operation where connection of both the
previous unit and the subsequent unit are OK, the optical
signals on both the primary and secondary routes are
regenerated on the respective optical outputs.
If the primary optical input signal is not present, the unit
will shut down the secondary optical output to inform the
previous unit that the signal route is not OK. The previous
unit will then send out that was on the primary optical
output on its secondary optical output. This signal will be repeated around the ring to get back to this
AMG2780R-DR-CWDMn. on the secondary route. As the primary input is not present on this unit, the
signal from the secondary optical input is now repeated onto the primary optical output. Thus
maintaining integrity of the transmission on the primary optical signal route.
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 signal that was on the primary optical output onto the secondary optical output.
This signal will be transmitted to the next unit around the ring in the opposite direction on the
secondary route.
Primary
Secondary
CH 5
CH 6
CH 7
CH 8 CH 4
CH 3
CH 2
CH 1
OPTO IN
OPTO OUT
OPTO OUT
OPTO IN
2780R-DR-CWDM1
AMG
PRIMARY OPTO SYNC
TX O ORX
POWER
O
SECONDARY OPTO SYNC
TXO ORX
POWER
O
2780R-DR-CWDMn
2700 optics (Primary)
TXRX
2700 optics
(Secondary) RXTX
CWDMn
CWDMn CWDMn
CWDMn
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)
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 3 AMG2780R-DR-CWDMn
Instruction Sheet D15339-
00
Connections
Optical Connections
PRIMARY OPTO OUT
Connector............................................FC/PC
Primary Channel Launch Power..........-3dBm
PRIMARY OPTO IN
Connector............................................FC/PC
Primary Channel Sensitivity.................-25dBm
SECONDARY OPTO OUT
Connector............................................FC/PC
Secondary Channel Launch Power.....-3dBm
SECONDARY OPTO IN
Secondary Channel Sensitivity............-25dBm
Secondary Channel Launch Power.....-3dBm
Operating Wavelength.........................n = 1 1510nm
n = 2 1530nm
n = 3 1550nm
n = 4 1570nm
n = 5 1470nm
n = 6 1490nm
n = 7 1590nm
n = 8 1610nm
Power Connection
Power supply.......................................from plug in connection on the 2000 or 2005 subrack
Power consumption .............................10 Watts max.
Indicators
Power...................................................Green – unit powered
Off – no power applied to unit
Primary Opto Sync TX.........................Green - Primary optical channel transmitting
Off - Primary optical channel not transmitting
Primary Opto Sync RX ........................Green - Primary optical channel receiving
Off - Primary optical channel not receiving
Secondary Opto Sync TX....................Green - Secondary optical channel transmitting
Off - Secondary optical channel not transmitting
Secondary Opto Sync RX....................Green - Secondary optical channel receiving
Off - Secondary optical channel not receiving
Physical Information
Dimensions
Height ..................................................3U Plug-in
Width....................................................14HP
Depth ...................................................170mm excluding connectors
Weight..................................................750grams
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 3 AMG2780R-DR-CWDMn
Instruction Sheet D15339-
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, 1
set 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.
The 2005 series subrack is fitted with a 100 watt power supply
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. +44 (0) 1767 600777.
See unit data sheet for full specification.
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