User Manual

Sonik G2BT Base Transmitter User Manual
March 14, 2002 41 7M487C4
Cutback by 1 dB Cutback by 3 dB Station de-keys
VSWR at 1 PA RF output
connector > 3:1
VSWR at 1 PA RF output
connector > 10:1
VSWR at more than 1 PA
RF output connector >
10:1
VSWR at antenna
connector > 3:1
VSWR at antenna
connector > 10:1
Temperature of station
exceeds 65˚C
Temperature of station
exceeds 70˚C
Temperature of station
exceeds 80˚C
One or more PAs issue a
temperature warning
1 PA or 1 PSU fails
internally in a 400W
station
More than 1 PA and/or
PSU fails internally in a
400W station
The PA and/or PSU fails
internally in a 100W
station
Clipping of RF waveform
detected (FCC rules)
Exciter card loses lock
Cartesian feedback loop
fails or is disconnected
RF output power at
antenna connector
exceeds set power level
by 10%
Table 1, Power Cutback Conditions
If a cutback occurs due to a fault, the G2BT may revert to full power if the fault goes away for 60
seconds.
If a de-key occurs, the station will set the transmission paging mode user interface variable
(tran
pa)
to OFF, and the calibration test mode variable
(cal t)
to STOP, and will not allow
transmission even after cycling power until the paging mode variable is locally or remotely set to
ON, or the calibration test mode variable is locally or remotely set to START.