3. How to Use
3.1. Description of the Front Panel
TX
RX
V35
ALM
PWR/ PAT
Figure 1 the front panel of RC802/804/806-30B-FV35 module
3.1.1. Power Supply/Error code test Indicator
PWR power supply indicator (green/yellow):
PWR/PAT Green/Yellow:
Green, built-in power works in good condition.
Yellow, when using built-in error code test function, if the fiber interface receives its own
sending pseudo random sequence data the indicator will be in steady yellow. When it gets
an error code the indicator will turns to green for at least 1 second.
Steady off, the module is power off.
3.1.2. Alarm Indicators
z
ALM
Red/Yellow:
Steady red,
Local fiber signal has LOS, LOF, 1 E-3 error code alarm.
Flash red,
Remote fiber signal has LOS, LOF, 1 E-3 error code alarm.
Steady Yellow, In fractional mode E1 data channel of local fiber signal has AIS alarm,
G.704 LOF alarm, G.704 multi-LOF alarm, CRC4 verification error; In
unframed (transparent) mode E1 data channel of local fiber signal has
AIS alarm.
Flash Yellow, Only occur in frame mode. E1 data channel of Remote fiber signal has
AIS alarm, G.704 LOF alarm, G.704 multi-LOF alarm, CRC4
verification error alarm.
Steady Off,
no alarm and the line is normal.
Notice: This series device has function of CRC4 verification auto-negotiation. When there is
CRC4 verification information in the receiving E1 signal, the CRC4 verification function
will be enabled automatically. When the CRC4 error occurs the CRC alarm indicator will be
valid. If there is no CRC4 verification information the verification function will be disabled
automatically and CRC alarm indicator is invalid.
3.1.3. V.35 Interface
