TB 9-6625-1962-24
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. The following peculiar accessories are also required for this
calibration: Indicator oscilloscope, Tektronix 7000 series (must be compatible with TI), and
Calibration fixture (extender), Tektronix, model 067-0589-00.
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: 1%
(9020A)
CALIBRATOR
Dc voltage:
Fluke, Model 5720A (5720A)
Range: 1.997 to 1002 V
(p/o MIS-35947)
Accuracy: 0.025%
Dc current:
Range: 1.988 mA to 2.012 A
Accuracy: 0.125%
Range: 190 to 1.9 M
Accuracy: 0.125%
Range: 79.5 to 80.5 kHz
Fluke, Model PM6681/656
Accuracy: 0.15%
COUNTER
(PM6681/656)
Range: 4.7 to 15.9 Vdc
Agilent, Model 3458A (3458A)
Accuracy: 0.025%
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 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 manufacturers' manuals.
d. When indications specified in paragraphs 8 through 10 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 12. 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.