Apr/2006 - Honeywell KHF 1050 System Installation Manual

Discrete Line and Flash Checksum
DSP ROM and RAM
Internal Clocks
RF Board XMT Operation
RF Board RCV Operation
DC Voltages
Rx/Ex Internal Temperature
PA and ACP Operation
Rx/Ex - CPLR Serial Communication
ACP Low Pressure WARN
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
Revison 2
N
KHF 1050 SYSTEM INSTALLATION MANUAL
FUNCTION
Table 1001 - RX/EX BITE Matrix
TURN ON PILOT CONT
X
X
X
X
X
X
X
X
X
"Table 1002 - PA BITE Matrix"
23-10-09
X
X
X
X
X
X X
X X
X
X
.
Page 1003

Apr/2006