TB 9-6625-2117-24
calibration procedure. The following peculiar accessories are also required for this
calibration: Standardizer 5-80 pF and Probe HV.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
FREQUENCY COUNTER
Range: 9990 to 1010 Hz
Fluke, Model PM6681/656
0.25%
(PM6681/656)
Accuracy:
Range: 0 to -4018 V dc
Fluke, Model 8840A/AF05
Accuracy: 0.125%
(AN/GSM-64D)
Fluke, Model 5820A-5C-GHZ
Time markers:
(5820A-5C-GHZ)
CALIBRATOR
Range: 20 ns to 5 s
Accuracy: 0.75%
Voltage amplitude:
Range: 5 mV to 50 V
p-p at 1 kHz
Accuracy: 0.5%
Pulses:
Range: 1 ms and 10 s
Risetime: 14 ns or less
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
name as listed in table 2.
c. Unless otherwise specified, verify the results 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. When indications specified in paragraphs 8 through 13 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 13. Do not perform power supply check if all other
parameters are within tolerance.
e. Unless otherwise specified, all controls and control settings refer to the TI.
