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Figure 15 Aircraft Insulation Test Configuration
C. Test Procedure
Refer to the specific Maintenance Manuals for proper procedures and calibration values.
(1) Press PWR to turn test set ON.
(2) Allow initialization to complete as displayed by the progress bar.
(3) Press ENT to accept last used Frequency or key in new between 400 and 10,000Hz.
a. Example for 1000 Hz: On the keypad press “1”, then “0”, then “0”, then “0” then ENT.
(4) Press F3 to select INSulation Measure.
(5) Press MODE to select 3T (default) or 2T as desired.
(6) Press RANGE to select AUTO ranging (default) or 40M, 400M, 4,000M or 20G range.
(7) Press F1 for L/H (default), if not already highlighted.
(8) Observe the LCD display until it shows its highest value, or a value exceeding the
minimum specified. The test is considered satisfactory if the minimum is reached.
(9) Press F2 for L/S.
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