TB 9-6625-1062-24
Table 2. Minimum Specifications of Equipment Required
Minimum Use
Manufacturer and Model
Common Name
Specifications
(Part Number)
Range: 0 to 1.150 F
CAPACITANCE BRIDGE
Andeen-Hagerling, Model 2550A
(SECONDARY)
Accuracy: 0.125%
Range: 0 to 1151.2 pF
Accuracy: 0.012%
Range: 0.1 pF to 2000 F1
CAPACITANCE/INDUCTANCE
Wayne Kerr, Model 6425B
MEASURING SYSTEM
(MIS-45837)
Accuracy: 0.05 %
(TRANSFER)
from 100 pF to 1 F.
1Verified
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instructions outlined in paragraph 6 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 and item identification number 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.
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.
7. Capacitors (Fixed)
a. Performance Check
(1) Adjust capacitance bridge for 1 kHz operation.
(2) Adjust capacitance bridge to obtain residual capacitance. Record the value for
each range being used.
(3) Connect TI to capacitance bridge UNKNOWN CAPACITANCE HIGH and LOW
terminals with TI G banana plug plugged into LOW terminal of capacitance bridge.
(4) Measure capacitance and record capacitance indication.
(5) Subtract value recorded in (2) above from value recorded in (4) above. The
difference is the measured value. A test report is required for all General Radio, Types
