Aux-Gps Status Page (Example) - Garmin G1000 Maintenance Manual

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7.3.1 GIA Testing
If unit is removed or replaced the following tests are recommended:
GPS Signal Acquisition Test
The GIA units normally acquire a 3D GPS navigation solution within 5-10 minutes of startup,
provided the aircraft is outside (or indoors with a GPS repeater).
In some rare instances when the GPS receiver is taking longer than normal to
acquire, a date and/or time change may be required.
Select the satellite status page on the MFD (fourth page in AUX group). Two softkeys on the
bottom of the display allow the user to toggle between GPS 1 and GPS 2. Verify that both
receivers show 3D Navigation with a WAAS fix on the MFD.
VHF COM Interference Test
This test must be conducted outside. Use of a GPS repeater inside a hangar may result in a
failed test. Once the signal acquisition test has been completed successfully, perform the
following steps:
1. On the MFD, monitor GPS signal strength bars on the third AUX Page.
2. On the PFD, ensure that the CDI is set to GPS. If it is not, press the 'CDI' softkey until GPS
ENR is displayed.
3. Verify that the GPS "INTEG" flag is out of view.
4. Select 121.150 MHz on the No. 1 COM transceiver.
5. Transmit for a period of 30 seconds while monitoring GPS 1 signal strength levels.
6. During the transmit period, verify that the GPS "INTEG" flag does not come into view on the
PFD and verify that GPS 1 does not lose a 3-D navigation solution on the MFD.
7. Repeat steps 5-6 and re-transmit while monitoring GPS 2 signal levels on the MFD.
8. Repeat steps 4 through 7 for the following frequencies:
G1000 System Maintenance Manual
190-00907-00
Figure 7-5. AUX-GPS Status Page (Example)
NOTE
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Rev. B