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LMM for the Kodiak 100 Page 7-21
190-02102-00 Rev.4
7.6.6 Calibration Procedure E: Magnetometer Interference Test
Figure 7-6. GRS / GMU Calibration Page
This procedure provides instructions for calibrating both GRS AHRS separately. It is
acceptable to calibrate both GRS AHRS simultaneously by putting both PFD 1 and PFD
2 in configuration mode and following the procedure below, using PFD 1 to calibrate
GRS #1 and PFD 2 to calibrate GRS #2.
Calibration Procedure E is required for initial installation verification and
should be included as part of the certification data. Furthermore, Calibra-
tion Procedure E should be performed once every 12 months on at least
one production aircraft for every airframe type or model equipped with the
G1000 system. This procedure validates that no electronic device is inter-
fering with the operation of the GMU 44 magnetometer which directly
impacts the determination of attitude and heading by the GRS 79 AHRS.
Calibration Procedures A-1 through D are not required before the execu-
tion of this procedure.
1. Initiate the AHRS magnetometer interference test procedure by performing the
following steps:
a) Enter Configuration Mode and go to GRS/GMU Calibration page as shown in
Figure 7-6.
b) This page is protected and requires a keystroke password to perform this
test. Press the following softkeys in sequence:
• Softkey 9.
• Softkey 10.
• Softkey 11.
• Softkey 12.
c) Select GRS unit and press the ENT key.
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