User Manual

AirLink Pro T1/E1 Rack MountInstaller’s Guide
Operations and Maintenance
Rev. B - 1/97
4-10
Table 4-1
Visual Indicators
Name Color Function
Power Green Indicates that primary power is applied to the
equipment and the power supply is working.
Major Alarm Red When ON, indicates that one or more of the
following events has occurred.
-Transmit Power below threshold
-Synthesizer Loss of Lock (equipment failure)
-Transmitter Failure
- DTE Input Loss
- Radio Sync Loss
- Loss of primary burst sync (single sync bus)
- Loss of primary and backup burst sync (dual
sync bus)
Minor Alarm Yellow When ON, indicates that one or more of the
following events has occurred.
- RCV Input Level Below Threshold
- Unit has been placed in a test mode
- ES threshold exceeded
- UAS threshold exceeded
- Loss of primary or backup burst sync (dual
sync mode)
Sync Source Green When ON, indicates that this unit is a source of
burst sync for other AirLinks.
T1/E1 SIG Loss Red When ON, indicates the T1/E1 input signal from
the DTE has been lost or all zeros.
Acquiring Performance Information
Each AirLink Pro T1/E1 Rack Mount system maintains an internal database of
status and performance information that it uses, in part, to derive the events
that are stored in the event queue. The performance information categories
include:
❚ Quasi-Random Signal Sequence Bit Error Rate (QRSS BER)
❚ Errored Second (ES) counts (1-hour and 24-hour)
❚ Unavailable Second (UAS) counts (1-hour and 24-hour)