User's Manual

User Manual for POD Systems Revision: 0.7
© KMW USA Inc.
1818 E. Orangethrope Ave, Fullerton, CA 92831
Tel. [phone]
www.kmwcomm.com
65
2.2.1.5 Alarms
Table 2-35 3/5/7 band RU – Alarms
Alarm Name
Description
Remedy
Alarm
Severity
LED
color
High Temperature
Temperature too high
Check environment
Major
Red
Temperature high
Minor
Yellow
Low Temperature
Temperature too low
Minor
Yellow
Downlink High
Output Power
RF signal too high
Check Head-end downlink input level/
attenuator configuration/ALC status
Major
Red
RF signal high
Major
Yellow
Uplink High Input
Power
RF signal too high
Check RU uplink input level/ attenuator
configuration/ ALC status
Major
Red
RF signal high
Major
Yellow
Downlink Low
Output Power
RF signal too low
Check Head-end downlink input level/
attenuator configuration/ RF cabling
Minor
Yellow
Link
Communication fail
Check cable connection
Major
Yellow
Freeze
The final stage of
Shutdown process
Check if shutdown process is going again
after reset
Major
Red
Downlink ALC
Activation
ALC activation
Check Head-end downlink input level/
attenuator configuration
Warning
Yellow
Uplink PLL Unlock
Uplink PLL unlock
Check if uplink PLL is still in unlocked
status after resetting PLL frequency
Minor
Yellow
VSWR
Bad RF cable/mismatched
service antenna
Check cable between RU and service
antenna, VSWR of service antenna
Major
Yellow
Optic LD Fail
Uplink LD fail
Check if optic LD fail alarm occurs again
after reset.
Major
Yellow
Optic PD Fail
Downlink PD fail
Check optic cable connection with H-
HOM
Major
Yellow
Optic Loss
Excess permitted optic loss
Check optic cable connection with H-
HOM / clean Optic connector and port
Minor
Yellow
High current
Power supply load too high
Check if current alarm occurs again after
reset.
Major
Red
Sync fail
No TDD sync signal is
acquired
Check optic cable connection with H-
HOM and 2.6G downlink input signal
Major
Yellow
2.2.1.6 Grounding
- Refer to section 3.3.2