Page 5-8
G1000/GFC 700 Post Installation Checkout Procedure - Hawker / Beechcraft King Air C90
Revision 5
190-00682-00
5.3.5
Magnetometer Interference Test
A magnetometer interference test verifies a magnetically ‘clean’ installation of the GMU 44. This test
exercises various devices on the aircraft that could potentially affect the magnetic field as measured by
the GMU 44 .
Figure 5-4. Magnetometer Interference Test
This test is used to validate that no electronic device interferes with the operation of the
GMU 44 magnetometer. Calibration Procedures A through C are not required prior to
this procedure.
1. Initiate the AHRS magnetometer interference test procedure by performing the following steps:
2. On PFD1, enter Configuration Mode and go to GRS/GMU Calibration page as shown in Figure
5-4.
3. This page is protected and requires a keystroke password to perform this test. Press the
following softkeys in sequence:
i) softkey
9
ii) softkey
10
iii) softkey
11
iv) softkey
12
4. Select
MAG INTERFERENCE TEST
and press the PFD1
ENT
key.
5. Follow the checklist items displayed on the PFD1, and press the
ENT
key as each one is
completed or confirmed.
NOTE
