Power Amplifier - Tait TB8100 User Manual

Synthesiser out of
lock
Synthesiser out of
lock: Exciter
Synthesiser out of
lock: Digital
Synthesiser out of
lock: Receiver

Power Amplifier

TB8100 Service Kit User's Manual
b. Look in the channel profile folders in the Task Manager task list to see if
there are any 'go to channel' actions. Note the number of the channel
that Task Manager instructed the base station to go to.
c. Select Configure > Base Station > Channel Table to see whether a con-
figuration for that channel exists.
The reciter has three different synthesiser alarms.
The exciter synthesiser is unable to lock on to the frequency it is configured to
operate at. In response, the base station disabled the transmitter.
1. Check that this frequency is within the exciter's RF frequency range.
2. Do a diagnostic test to determine the reciter's
check that the frequency is within the exciter's switching range.
3. If the frequency is outside the switching range, use the Calibration Kit to
alter the switching range. Otherwise send the reciter for repair.
One or more of the DSP and sampling clocks is out of lock. In response, the
base station disabled the receiver and the transmitter.
1. The base station is configured for an external reference of a particular
frequency, but the actual frequency of the external reference is different.
2. The master synthesiser is unable to lock onto the frequency. The base station
will run, but the accuracy of its receive and send frequencies cannot be
guaranteed. Send the reciter for repair.
The receiver synthesiser is unable to lock onto the frequency it is configured to
operate at. In response, the base station disabled the receiver.
1. Check that this frequency is within the receiver's RF frequency range.
2. Do a diagnostic test to determine the lock range, and then check that the
frequency is within that range.
3. If the frequency is outside the lock range, use the Calibration Kit to alter the
switching range. Otherwise send the reciter for repair.
The Power Amplifier area shows the alarm status of the PA associated with the
reciter you are logged on to. When a fault is no longer active, any actions (for
example, inhibiting transmission) are reversed.
switching range, and then
Monitoring Alarms 149