TB 9-6625-975-24
Table 1. Calibration Description Continued
Test instrument parameters
Performance specifications
A
Resistance
Range: 0 to 1000 M
ccuracy: 1% of any cardinal calibration point
Range: 0 to 500 M at 6 V1
Accuracy: 0.03 in. of scale ( 10% at 15% and 85% of FS)3
Range: 0 to 1000 M in 5 ranges2
Accuracy: 0.045 in. of scale
1Accuracy
is for Biddle, Model 210359.
2Accuracy
is for AUL, Model 1602.
3 5% at mid scale.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287 or AN/GSM-705. Alternate items may be used by the
calibrating activity when the equipment listed in table 2 is not available. The items
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 four-to-one 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
Manufacturer and model
Common name
Minimum use specifications
(part number)
Range: 450 to 1025 V dc
Agilent, Model 3458A
(3458A)
Accuracy: 0.25%
A
Biddle-Gray, Model 71-631
Range: 100 to 1.111 M
STANDARD NO. 1
(7910328)
ccuracy: 0.10%
Aange: 1 to 10 M
Beckman, Model CR10M
R
STANDARD NO. 2
(8598965)
ccuracy: 0.25%
A
Beckman, Model CR100M
Range: 10 to 100 M
STANDARD NO. 3
(8598966)
ccuracy: 0.25%
A
Beckman, Model CR1000M
Range: 100 to 1000 M
STANDARD NO. 4
(8579478)
ccuracy: 0.25%