User's Manual

E1 Spread Spectrum Radios
9-5
9.2 LCD Alarm Items
Table 9-9 LCD Alarm Items
Alarm Grade Status Explanation
MOD Critical Modulation alarm Modulation malfunctions
DEMOD Critical Demodulation lock failure Demodulation signal loss
EOW Major No service between equipments Incorrect connection data
ODU-POW Critical The -48V power supply of IDU malfunctions
The cable between IDU & ODU is
short
Link ID Major
LINK ID at the remote end is different from
the user’s setting
MUX Critical Receiving lock failure Even bridging cannot lock the timing
I n-LOS Warning IDU cannot detect the input tributary signal No Traffic input parameters
I n- AIS Warning Tributary signal input are all 1’s Traffic input parameters are all 1’s
ODU- M/C Major
IDU cannot monitor ODU M&C channel between IDU and
ODU is down
RSL Major Receive signal level alarm
Rx connection is not on the best
situation
BER Major Bit error rate alarm
Connection is not on the best
situation
-5V Critical ODU -5V power alarm
SSPA Major Solid state power amplifier is off
TX-POW Major Tx is out of range Transmitter is abnormal
PLL-TX Critical Tx of ODU phase lock LO lose lock
PLL-RX Critical Rx of ODU phase lock LO lose lock
PA-I Critical The current is out of range SSPA is abnormal