- 17 -
Notice: The relationship of TX CLK and TD phase of this series device is auto-adjusted, so users
need not to configure it.
5. The 6
th
~ 8
th
bit: Loopback configuration (default OFF)
6
th
bit
7
th
bit
8
th
bit
ON
Enable ALOOP
Enable DLOOP
Enable RLOOP
OFF
Disable ALOOP
Disable DLOOP
Disable RLOOP
All loopback switches are used for bit error testing, customer could choose the loopback type.
The 6
th
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.
The 7
th
bit: DLOOP (Digital loopback) Local V.35 interface inner loopback
DLOOP is used for test the fiber line link, the E1 cable and modem performance in remote site.
The 8
th
bit: RLOOP (Remote loopback) Remote modem V.35 interface inner loopback
RLOOP is used for test the fiber line link, modems performance in both sites.
z
SW6: Function selection
SW6 definition (default is all OFF)
1st bit
2nd bit
3rd bit
4th bit
5th bit
6th bit
7th bit
8th
bit
Define Fault
Propagation
Reserved Reserved Reserved Reserved Reserved Reserved
RMT
MNG
ON
Enable
- - - - - -
Force
OFF Disable Normal Normal Normal Normal Normal Normal Auto
1. The
1
st
bit: Fault propagation (default OFF)
SW6-1
Fault Propagation
ON Enable
OFF Disable
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.
V.35
Local site
Modem
BERT
Fiber
Local site
modem
Fiber
V.35
BERT
V.35
Remote
site
modem
Local site
Modem
Remote
site
modem
BERT
Fiber
V.35
V.35
