TB 9-6625-2153-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287, AN/GSM-705 and Secondary Reference Calibration Standard
Set NSN 4931-00-621-7878. Alternate items may be used by the calibrating activity. The
item selected must be verified to perform satisfactorily prior to use and must bear evidence
of current calibration. The equipment must meet or exceed the minimum use specifications
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 this
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Common name
Minimum use specifications
Manufacturer and model
(part number)
Agilent, Model 3458A (3458A)
Range: 0 : to 1 M:
1
Accuracy: r0.0025%
Range: 10 M:
Accuracy: r 0.0125%
Range: 100 M:
Accuracy: r0.0625%
1For
reference level support of RDS-615B, accuracy is 12.5 ppm.
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. This is a general procedure which provides instructions for the calibration of a
variety of resistance decades and/or standards.
d. 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 manufacturer's manual for each TI.
e. Unless otherwise specified, all controls and control settings refer to the TI.
