Garmin GNS 530W, Руководство по установке

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500W Series Installation Manual Page 5-31
190-00357-02 Rev. D
5.5.4 VHF NAV Checkout (GNS 530W)
Press the CDI key to select VLOC mode (indicated by a white VLOC in the lower left corner of the
display). Check the VOR reception with ground equipment, operating VOT or VOR, and verify audio
and Morse code ID functions (if possible). Tune a Localizer frequency and verify the CDI needle and
NAV flag, and VDI needle and GS flag operation.
5.5.5 VHF COM Checkout (GNS 530W)
5.5.5.1 Antenna Check
If desired, the antenna VSWR can be checked using an inline wattmeter in the antenna coax using
frequencies near both ends of the band. The VSWR should be < 2:1, and is not to exceed 3:1. A VSWR
of 2:1 will cause a drop in output power of approximately 12%, and 3:1 causes approximately a 26%
drop.
5.5.5.2 Receiver / Transmitter Operation
Tune the unit to a local VHF frequency and verify the receiver output produces a clear and
understandable audio output. Verify the transmitter functions properly by contacting another station and
getting a report of reliable communications.
5.5.6 TAWS System Check (For Units With TAWS Only)
While on the ground turn the 500W Series unit on following normal power-up procedures. The audio
panel should also be turned on.
NOTE
A 3D GPS position fix is required to conduct this check.
1. Select the TAWS page.
2. Press the MENU key.
3. Select the Test Terrain? field and press the ENT key.
4. Wait until the TAWS self-test completes (10-15 seconds) to hear the TAWS system status aural
message.
•
The aural message “TAWS System Test OK” will be annunciated if the TAWS system is
functioning properly.
•
The aural message “TAWS System Failure” will be annunciated if the TAWS system is NOT
functioning properly.
If no audio message is heard, then a fault exists within the audio system and the TAWS capability must
be considered non-functional.