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56-101-01501_01502 Revision D
Page | 15
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.
AUTO
MON
INS
CAP
SIM
CAL
F1
F2
F3
F4
F5
F6
(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.
L/H
L/S
L/G
H/G
H/S
S/G
F1
F2
F3
F4
F5
F6
(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.
L/H
L/S
L/G
H/G
H/S
S/G
F1
F2
F3
F4
F5
F6
(10) The test is considered satisfactory if the minimum specified is reached.
HI-Z
ACFT
IND
DFQ40K
4W
SM
GND
COMP
LO-Z
Com Link
-
+
INPUT
WIRING
AIRCRAFT
INDICATOR
A/C
IND
Adapter Cable
Do Not Connect
AIRFRAME
CHASSIS
IND
COMP
LO-Z
HI-Z
LO-Z
HI-Z
COMP
GND
GND
A/C