TN72 TABS GPS Receiver Installation Manual
5 January 2018
01691-00
Issue AG
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16
Trig Avionics Limited
7. Post Installation Checks
Post installation checks should be carried out in accordance with your
certification requirements. Basic functionality can be verified as follows:
•
Place the aircraft in the open with a good view of the sky.
•
Apply power to the transponder and the GPS receiver. The
transponder can be left in Standby mode.
•
Repeatedly press the Fn button on the transponder control panel until
the ADS-B diagnostic screen is displayed. It will initially display
dashes “—“ for the position fix.
•
After two minutes the GPS should have obtained a position fix and a
position corresponding to the aircraft location should be displayed.
•
Where configured, verification of correct squat switch ground/airborne
indications. In an aircraft with a squat switch, setting the Mode switch
to ALT when the aircraft is on the ground should leave the
transponder in GND mode; when the aircraft becomes airborne, the
mode will switch automatically to ALT. When GPS emulation of the
squat switch has been configured the mode changes need the GPS to
have an adequate position fix. GPS based air/ground transitions can
take more than 30 seconds to register.
Summary of Contents for TN72
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