Garmin G5 User Manual page 53

1.7.4.2.4 C
C
aLibration
The Air Data configuration page has a selection for static pressure calibration. This
procedure is used to perform an altimeter re-calibration. The altitude pressure sensor
used in the G5 is very low drift and does not typically require re-calibration.
NOTE: This calibration is only used when the G5 fails a periodic altimeter test and
should only rarely, if ever, be used.
The static pressure calibration requires the use of a pressure control system (test
set) with an altitude accuracy of at least ±5 ft at sea level and ±20 ft at 30,000 ft. It
is necessary to re-calibrate to sea level (0 ft), 10,000 ft, 20,000 ft, and optionally to
30,000 ft. The operator is allowed to finish the calibration at the end of the 20,000 ft
calibration if the 30,000 ft calibration is not desired.
CAUTION: To avoid damaging the G5 pressure sensors, both the pitot and
static ports must be connected to the test set.
1) Select the Air Data configuration page.
2) Select Calibrate Static Pressure.
3) Ensure all on-screen instructions have been complied with, then press Start.
4) At each calibration point the display will present a screen indicating the
pressure altitude to set. Once the altitude is set, select Ready to calibrate
this pressure.
5) During the calibration at each pressure, the pressure must be held constant
for 30 seconds for the calibration step to be successful. The calibration may
be cancelled at any point should the test setup require adjustment before
repeating. A progress screen will be displayed showing the status of the
test.
6) Select Done when the static pressure calibration is successfully completed.
190-02072-00 Rev. B
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aLibration roCedure
Garmin G5 User's Manual
Installation Manual
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