TB 9-6625-1097-35
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUDIO ANALYZER
Range: 10 Hz to 600 kHz
Boonton, Model 1121 (1121)
Distortion: <1%
FREQUENCY COUNTER Range: 9.9 to 1,008,990 Hz
Fluke, PM6681/656 (PM6681/656)
Accuracy: 0.25%
Range: 20 Hz to 9 kHz
Fluke, Model 8840A/AF05 (AN/GSM-64D)
0.98 to 1.02 V ac
Accuracy: 0.5%
TRUE RMS
Range: 1 to 999 kHz
Fluke, Model 8922A/AA (8922A/AA)
25 mV to 2.5 V
Accuracy: (0. 7%)
6. Preliminary Instructions
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
name as listed in table 2.
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 this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
WARNING
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 step within the
performance check where applicable.
a. Remove TI protective cover as required for adjustment.
b. Connect TI to a 115 V ac source.
and stabilization.
