TB 9-6625-2296-24
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
c. Unless otherwise specified, verify the result of each test, and whenever the test
requirement is not met take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in the procedure. Additional
maintenance information is contained in TM 11-6625-3244-40 and TM 11-6625-3245-40 for
these TIs.
d. When indications specified in paragraphs 8 through 25 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 25. Do not perform power supply check if all other
parameters are within tolerance.
e. Unless otherwise specified, all controls and control setting refer to the TI.
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each setup within the
performance check where applicable.
NOTE
Ensure proper calibration factors are used for measuring
receiver sensor module selected.
a. Connect TI to a 115 V ac source.
b. Remove top cover and use extender card to extend A25 digitizer board (fig. 2).
c. Press POWER key ON and allow 1 hour for equipment warm-up.
d. Connect signal generator output to oscilloscope channel 1 input.
e. Set signal generator for a -26.5 dBm @ 425 kHz output.
f. Set oscilloscope for AC coupling, 1 μS/div sweep and 10 mV/div scale.