TB 9-6625-2279-24
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Fluke, Model 5720A (5720A)
CALIBRATOR
Dc volts:
(p/o MIS-35947)
Range: 242.5 mV to 1030 V
Accuracy: 0.75%
Dc current:
Range: 48.5 A to 515 mA
Accuracy: 0.75%
Ac volts:
Range: 2.375 to 1050 V
Accuracy: 1.25%
A
Biddle-Gray, Model 71-631 (7910328)
Range: 17.74 to 225531.9
STANDARD
ccuracy: +2.83%
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.
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
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.
8. Dc Voltage
a. Performance Check
(1) Connect calibrator output to TI + and COM.
(2) Set TI function/range switch to 0.25 DCV.