351804-1 Rev. 100
COM5000-8 TECHNICAL MANUAL
16
3.2.4
T-4180 Exciter Module
Refer to T-4180 manual.
3.3
TRANSMITTER SYSTEM OPERATION
3.3.1
General
The COM5000-8 power amplifier can be considered an "extension" of its model T-4180 exciter. Transmitter
operation is described in the T-4180 Manual.
To a major degree, the COM5000-8 is transparent to the operator of the T-4180 however, the following
should be noted:
b)
The COM5000-8 power amplifier will continue to operate under most fault conditions providing as
much power output as is possible dependent upon the particular condition.
c)
Continuous BIT action is taken to prevent damage and allow for continued PA operation under most
fault conditions. The actions are either dynamic (adjusting to conditions as they change), key
dependent (evaluated on the next PTT), or latched in.
d)
Faults and BIT responses are reported to the T-4180. The information can be accessed and read on
the T-4180 front panel display or on an external computer. See section 3.3.4 below.
3.3.2
Operating The Transmitter
To turn ON the Transmitter proceed as follows:
a.
Turn ON the System Controller module.
b.
Turn ON the T-4180 Exciter
c.
Turn the Power Supply module AC circuit breaker ON (3-handle toggle breaker).
AMP OFF mode:
When the System Controller module is turned ON
– with the T-4180 and the Power Supply module turned
OFF - the AMP OFF status LED indicator is lit.
If both the System Controller and the T-4180 is turned ON and serial data communication has been
established between the T-4180 and the System Controller, the AMP OFF and the SPLY fault LED indicator
is lit. The SPLY fault LED is lit because the 50VDC Power Supply module is turned OFF.
