Honeywell BENDIX KING KMH 880 System Installation Manual page 190

B
Check that the aircraft 5Vac or Vdc or 28 Vdc panel background lighting
power source and dimmer control is operational by adjusting the cockpit
dimmer switch for proper cockpit panel background illumination.
Check that the Transponder, TAS, and Radar Systems are OFF. If applica-
ble, the selected encoding altitude source should be #1. If applicable, the
ADC (Air Data Computer) source should be set to normal.
Operate the appropriate aircraft circuit breakers to apply power to the TAS
Processor, Traffic Advisory displays and all other aircraft equipment con-
nected to the TAS Processor subsystem. Check that the circuit breakers
remain closed (pushed in).
Allow enough time for equipment warm-up. Equipment in the TAS system
require one minute for equipment warm-up. External sensors may require
more than one minute warm-up time.
On the TAS control panel, Place the SBY switch to SBY mode. Place the
ABOVE/NORM/BELOW switch so as to indicate "NORM". Place the Range
so the 5 nautical mile (nmi) range has been selected. The following should
be visible on the traffic display screen:
• No "TAS" flag annunciation.
• "TAS STBY".
• If installed, the TA/VSI vertical speed needle should indicate 0 fpm.
Check that the brightness of the traffic display can be controlled by the
appropriate control. Brightness of the traffic display may be controlled by
the aircraft dimmer switch or by the BRT control on the display unit.
On the TAS Control Unit, select the ON position. The following conditions
should exist:
• The traffic display should indicate "TA" or "TA ONLY".
• No faults or fail annunciations are present on the traffic display.
• Traffic may be displayed on the traffic display depending on the
TAS strapping configuration and whether traffic exists in the area.
• Non-threat Traffic, displayed as an open white diamond.
• Proximity Intruder Traffic, displayed as a filled white diamond.
• Traffic Advisory (TA) traffic, displayed as a yellow circle.
D. Perform the Self-test by initiating the TAS System Self-test on the TAS Con-
trol Panel. The following events should occur during the test period:
On the traffic display, a test pattern will be displayed that allows verification
of each type of intruder symbol that can be displayed. During the self-test,
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KMH 880/KTA 870
Rev 0, October/2000