TB 9-4931-321-35
minimum use specifications listed in table 2. The accuracies listed in table 2 provide a
four-to-one ratio between the standard and TI. Where the four-to-one ratio cannot be met,
the actual accuracy of the equipment selected is shown in parenthesis.
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 the
calibration procedure. The following peculiar accessories are also required for this
calibration: Termination (Dummy Load), 50 Ω feedthrough; BNC plug to BNC jack,
Hewlett-Packard, Model 11048C (11048C) and Isolation Plug (Three wire to two wire
adapter) (7912356).
Table 2. Minimum Specifications of
Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Range: 105 to 125 V ac
Ridge, Model 9020A (9020A)
Accuracy: 1%
Agilent, Model 33250A (33250A)
FUNCTION/ARBITRARY
Output Range: 0.015 to 1 V rms
at 1 kHz
Accuracy: Amplitude 2%
1,020 Hz
Accuracy: 1%
Range: 0.87 to 1.8 V dc
Fluke, Model 8840A/AF05
(AN/GSM-64D)
Accuracy: 1%
Range: 0.098850 to 1.000000
ESI, Model DT72A
(7915908)
Accuracy: 0.06%
Biddle-Gray, Model 71-650 (71-650)
Range: 100 to 5,000 Ω
Accuracy: +0.75%
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
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.