TB 9-6625-1188-24
5. Accessories Required. The accessories required for this calibration are common
usage accessories, issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUTOTRANSFORMER
Range: 105 to 125 V ac
Ridge, Model 9020A
Accuracy: 0.75%
(9020A)
CALIBRATOR
Range: 1 mA to 10.3 A
Fluke, Model 5720A (5700A)
Accuracy: 0.75%
(p/o MIS-35947); w amplifier,
Fluke, Model 5725A/AR (5725A/AR)
Range: - 8 to + 286 V dc
Agilent, Model 3458A
Accuracy: 0.75%
(3458A)
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 and item identification number as listed in tables 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.
Additional maintenance information is contained in the manufacturers' manuals.
d. Unless otherwise specified all controls and controls 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 protective cover from TI.
b. Connect TI to autotransformer.
c. Connect autotransformer to a 115 Vac source and adjust controls for a 115 V output.
d. Set POWER switch to ON and allow 20 minutes for equipment to warm-up.