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2.7.6 Interference Test Procedure
(1) Operate the system on all functions and modes, and check that this does not affect other
electronic equipment in the aircraft.
(2) Operate the system on all functions and check that it is not affected by any of the functions of the
other electronic or electrical equipment in the aircraft.
(3) Upon successful completion of the foregoing post-installation tests, install the radome
preparatory to preflight checkout of the system.
2.8 PREFLIGHT CHECK AND FLIGHT CHECK PROCEDURES
2.8.1 Preflight Check Procedure
2.8.1.1 Single Indicators
Note
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The preflight check assumes that the system
has been properly installed and passed the
post-installation checks, that the aircraft is
pointed toward a non-reflective area, and that
fuel trucks or personnel are not close to the
radar line-of-sight.
After elapse of the turn-on time delay, the "RT
fault" indication should not appear on the display
in any mode except test. If "RT fault" appears in
any mode except test (or does not appear in the
test mode), a malfunction exists and corrective
action should be taken.
(1) Energize the radar bus and vertical gyro reference bus. Ensure that 28 VDC and 115 VAC power
is being supplied to the system. Check that the vertical (stabilization) gyro is erected.
(2) Vary the external panel lighting voltage (dim control) for maximum panel brightness. Check the
white panel markings for even light distribution. Reduce the lighting voltage. The panel lighting
should dim.
(3) Rotate the Function Select Switch on the Radar Control Panel to the TEST position.
(4) Set the TILT control on the Radar Control Panel to any position.
CAUTION
