TB 9-6625-1014-24
Table 1. Calibration Description
Test instrument
parameters
Performance specifications
AN/URM-90 (ZM-30/U)
LRC resistance
Range: 0.1 mΩ to 11 MΩ
Accuracy: (0.35% +1 dial div) on 0.1 Ω range
(0.2% + 1 dial div) on 100 kΩ range
(0.15% + 1 dial div) on all other ranges
Range: 1000 Hz
Accuracy:
1%
Range: 0.1 pF to 100 F
Accuracy: (0.5% + dial div) from 100 pF to 100 F
2% above 100 F; 2 pF below 100 pF
ESI MODEL 250DE
LRC resistance
Range: 0 to 12 MΩ
Accuracy: (0.1% + 1 dial div)
QX1 rheostat
Range: 3184 to 15.920 Ω
Accuracy: (1% + 1 dial div)
Range: 1000 Hz
Accuracy: 1%
Range: 0 to 1200 F
Accuracy: (0.2% + 1 dial div + 1% X dissipation factor)
Dissipation factor
Range: 0 to 1.05
Accuracy: (1% + 1 dial div)
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286, AN/GSM-287, or AN/GSM-705. Alternate items may be used
by the calibrating activity. The items selected must be verified to perform satisfactorily
prior to use and must bear evidence of current calibration. The equipment must meet or
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 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
(9020A)
Accuracy: 1%
Arco Electronic, Model SS-32
Range: 0.1F
STANDARD
(7907233)
Accuracy: 0.075%