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KHF 1050 SYSTEM INSTALLATION MANUAL
Page 1003
Revison 2 23-10-09 Apr/2006
Table 1001 - RX/EX BITE Matrix
5. KPA 1052 Power Amplifier Built-In-Test
The power amplifier design incorporates provisions for monitoring its own
operation to detect any condition or occurrence that the operator (a flight crew
member) might observe and interpret as a reason for requesting a
maintenance action.
The maintenance data collection provision includes the following three types of
monitoring: Power-On Test, Conditions Monitoring and Initiated test, as defined
below.
PA Alarm 1 - This alarm will be generated whenever the SWR at the output of
the power amplifier is too high. The antenna coupler will try to retune to lower
SWR during transmit mode.
PA Alarm 2 - This alarm will be generated whenever an invalid band error
request occurs, a higher than normal SWR within the PA is generated, a higher
than normal output power occurs, an over-temperature condition exists, or the
PA has no output power. This alarm inhibits all transmissions.
The BITE tests that are performed at system turn-on, at pilot activated or
continuously are summarized in “Table 1002 - PA BITE Matrix” .
FUNCTION TURN ON PILOT CONT
Discrete Line and Flash Checksum X
DSP ROM and RAM X X
Internal Clocks X X
RF Board XMT Operation X X
RF Board RCV Operation X X
DC Voltages X X
Rx/Ex Internal Temperature X X X
PA and ACP Operation X X X
Rx/Ex - CPLR Serial Communication X X
ACP Low Pressure WARN X
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