Aeroflex Operation Manual
PSD60-2R – REV 1 – AUGUST 24, 2011 – PAGE 2-3
2.4 RESISTANCE MEASURMENT
1. Connect CHASSIS jack (J7) to Airframe.
2. Turn power ON, select the desired LO-Z frequency, and allow three minutes for test set to
stabilize.
3. Check battery condition, if "LO BAT" is displayed on the display replace batteries.
4. Connect TANK UNITS LO-Z, HI-Z and COMP connectors (P4, J5, and P6) to the aircraft
interface with the appropriate interface cables.
5. Turn the FUNCTION SELET switch (A3S1) to MEASURE EXT, and select desired points to be
measured using the MEGGER SELECT switch. (A3S1)
6. The resistance between the points selected will be displayed in ohms on the test set display.
2.5 DTF MEASURMENT
1. Connect CHASSIS jack (J7) to Airframe.
2. Turn power ON, select the desired LO-Z frequency, and allow three minutes for test set to
stabilize.
3. Check battery condition, if "LO BAT" is displayed on the display replace batteries.
4. Connect TANK UNITS LO-Z, HI-Z and COMP connectors (P4, J5, and P6) to the interface box
with the appropriate interface cable.
5. Without the aircraft interface connected to the airplane, place the FUNCTION SELECT switch
(A3S1) in DTF mode.
6. When the unit nulls all stray capacitance, 0pF will be indicated on the units display.
7. Connect the interface to the airplane and read the capacitance indicated on the units display.
8. Divide the displayed capacitance by the capacitance per foot of the specific coax measured. This
number will yield the length of the coax, or the distance to the fault of the coax.
2.6 ERROR CODES
ER0 –
Not used at this time.
ER1 – LO-Z SHORT
The LO-Z signal is shorted and/or the REFHI/REFLO signal is to low.
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