SECTION II EQUIPMENT REQUIREMENTS

TB 9-4920-451-35

Table 1. Calibration Description

Test instrument parameters

Performance specifications

Simmons Precision, Inc., Model 472090-002

Capacitance measurement

Range: 40 to 999.9 pF

(external)

Accuracy: ±0.5% of reading

Range: 1000 to 2000 pF

Accuracy: ± .5% of reading

Capacitance substitution

Range: 40 to 999.9 pF

(internal)

Accuracy: +0.5% of reading

Range: 1000 to 2000 pF

Accuracy: ± .5% of reading

Resistance

Range: 1.0 to 1000 MΩ

Accuracy: +l increment

-.4 increment

Gull Airborne Instruments, Model GTF-4

Capacitance

Range: 0 to 8000 pF in 4 ranges1

Accuracy: ±0.5% of range setting

Resistance

Range: 0 to 100,000 MΩ in 4 ranges

Accuracy: 1.0 to 1000 mΩ +.5% of reading

1000 to 10,000 MΩ +10% of reading

10,000 to 100,000 MΩ +15% of reading

0.1 to 1.0 MΩ +1.0% of range

Consolidated Airborne Systems, Models TF20-1 and TF579

Capacitance

Range: 0 to 5000 pF

Accuracy: +0.5% of FS

Resistance

Range: 0 to 10,000 MΩ

Accuracy: 10% of reading

1Verified

from 35 to 2000 pF only.

SECTION II

EQUIPMENT REQUIREMENTS

4. Equipment Required. Table 2 identifies the specific equipment to be used in this

calibration procedure. This equipment is issued with Secondary Transfer Calibration

Standards Set AN/GSM-286. 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 listed in table 2.

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.