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Notice: The relationship of TX CLK and TD phase of this series device is auto-adjusted, so users
need not to configure it.
th
th
5. The 6
~ 8
ON
OFF
All loopback switches are used for bit error testing, customer could choose the loopback type.
th
The 6
bit: ALOOP (analog loopback) Local fiber optical interface inner loopback
ALOOP is used for test the V.35 cable, RX CLK phase and the modem performance in local site.
th
The 7
bit: DLOOP (Digital loopback) Local V.35 interface inner loopback
Local site
V.35
modem
DLOOP is used for test the fiber line link, the E1 cable and modem performance in remote site.
th
The 8
bit: RLOOP (Remote loopback) Remote modem V.35 interface inner loopback
BERT
RLOOP is used for test the fiber line link, modems performance in both sites.
SW6: Function selection
SW6 definition (default is all OFF)
1st bit
Define
Fault
Propagation
ON
Enable
OFF
Disable
st
1. The 1
bit: Fault propagation (default OFF)
When fault pass enable, alarms of optical interface Rx and Tx will be transferred to DCD and CTS
signal on V.35 interface; When fault pass disable the DSR, DCD and CTS signals of V.35 interface will
be valid.
bit: Loopback configuration (default OFF)
th
6
bit
Enable ALOOP
Disable ALOOP
BERT
V.35
Fiber
Local site
V.35
Modem
2nd bit
3rd bit
Reserved Reserved Reserved Reserved Reserved Reserved
-
-
Normal
Normal
SW6-1
ON
OFF
th
7
bit
Enable DLOOP
Enable RLOOP
Disable DLOOP
Disable RLOOP
Local site
Fiber
Modem
Remote
V.35
site
modem
Fiber
4th bit
5th bit
-
-
Normal
Normal
Fault Propagation
Enable
Disable
th
8
bit
BERT
Remote
V.35
site
modem
6th bit
7th bit
-
-
Normal
Normal
8th
bit
RMT
MNG
Force
Auto
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