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KHF 1050 SYSTEM INSTALLATION MANUAL
Page 1004
Revison 2 23-10-09 Apr/2006
Table 1002 - PA BITE Matrix
6. KAC 1052 Antenna Coupler Built-In-Test
The antenna coupler 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.
These maintenance observations are stored in non-volatile memory within the
KHF 1050 system so they can be retrieved with appropriate test equipment.
If the maintenance observation is serious enough to indicate Antenna Coupler
failure, the failure shall be communicated to the receiver/exciter for reporting to
the HF controller.
The BITE tests that are performed at system turn-on, at pilot activation or
continuously are summarized in “Table 1003 - Antenna Coupler BITE Matrix” .
Table 1003 - Antenna Coupler BITE Matrix
FUNCTION
POWER
ON
PILOT CONT
Load SWR (PA ALM#1) During Tx Only X
Temperature Internal SWR (PA ALM#2) X
Transmitter Power at 50 W
(With KAC 1052 in the system)
XX
FUNCTION
POWER
ON
PILOT CONT
Internal Memory X X
Internal DC Power X X X
Bridge Amplifier Output Voltage X X
Low Pressure Alarm Signal (PRESS ALM) X X
Leak Pressure Warning Level (Temp, Press) X X
RF Power Level and Power Sensor X
PA alarm #1 and #2 X X
VSWR and Impedance Sensor X
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