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Figure 3. Pulse characteristics - equipment setup.

Calibration Procedure For Transponder Test Set, An/Apm-239A (Including Transponder Test Set Ts-2681/Apm-239A And Multimeter Me-358/Apm-239A) Page Navigation
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TB 9-6625-2204-24
(5) Set calibrator controls for a 0.0 V output and move lead from multimeter J1 pin
B to pin P.
(6) Set multimeter function switch to +6 VDC and adjust calibrator for a 10 V dc
indication on multimeter. Calibrator will indicate between 9.6 and 10.4 V dc.
(7) Set calibrator controls for a 0.0 V output and set multimeter function switch to
6.3 VAC.
(8) Move lead from multimeter J1 pin P to pin D. Adjust calibrator controls for
400 Hz and a 10 V ac indication on multimeter. Calibrator will indicate between 9.5 and
10.5 V ac.
(9) Set calibrator controls for a 0.0 V output and set multimeter function switch to
XTAL CUR MA DC.
(10) Move lead from multimeter J1 pin D to pin F. Adjust calibrator controls for a
10 mA dc indication on multimeter. Calibrator will indicate between 9.6 and 10.4 mA dc.
(11) Adjust calibrator controls for a 5 mA dc indication on multimeter. Calibrator
will indicate between 4.6 and 5.4 mA dc.
b. Adjustments. No adjustments can be made.
11. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
9/(10 Blank)


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