Optical Interface; Dip-Switch Setup; Dip-Switch Sw5 Setup - Raisecom RC802-60B Series User Manual

4.1.4. Optical Interface

For dual-strand fiber, the optical connector is DSC/PC. TX means transmitting, RX
means receiving.
For single strand fiber, the optical connector is SC/PC.

4.2. Dip-switch Setup

4.2.1. Dip-switch SW5 Setup

Please use small flat-blade screwdriver or other sharp end tools to set up the dip-switch.
nd
1st and 2 bit: E1 link loop-back setup
st
1
OFF
ON
OFF
ON
rd
3 : location of loop back (default setting is'OFF')
OFF, remote loop back；
ON, local loop back.
st
Note: when 1 and 2
BER Tester
If "local loop-back" is set up on local optical multiplexer, the local optical multiplexer will
generate internal-loop and external-loop simultaneously.
BER Tester
If "remote loop-back" is set up on local optical multiplexer, the remote optical multiplexer will
generate internal-loop and external-loop simultaneously.
4th bit: Fault-Pass-Through (FPT) function setup
When FPT is disabled, it is identical to the AIS function of traditional optical multiplexers.
When the receiving signals of the E1 interface at the remote site are lost, the
CORRESPONDING local E1 interface will output all "1" signals; when the receiving signals
of the local optical interface are lost, ALL local E1 interfaces will output all "1" signals.
FPT is designed for users who have special requirements. When FPT is enabled, if there is
alarm of LOS on any direction of optical interface， E1 interfaces on both sides will not output
HDB3 code. In this case, there will be LOS alarm, rather than AIS alarm, on downstream
E1 terminal devices (e.g. Switches, converters or SDH devices).
nd
2
OFF No loop-back
st
OFF 1 E1 loop back
nd
ON 2 E1loop back
ON Both1st and 2
nd
dip-switch setting is not both off, 3
Local Optical
E1
Multiplexer
Local Optical
E1
Multiplexer
Description
nd
loop back
rd
dip switch is available.
Fiber
Fiber
7
Raisecom Technology Co., Ltd
ON
OFF
1 2 3 4 5 6 7 8
BER Tester
Remote Optical
Multiplexer
BER Tester
Remote Optical
E1
Multiplexer