Accessories Required

TB 9-4920-454-35

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)

CALIBRATOR

Range: 0 mV to 10 V dc

Fluke, Model 5720A (5700A/EP)

Accuracy: ±.003%

(p/o MIS-35947)

Range: 20 mV, 70 Hz

Accuracy: ±3.0%

FREQUENCY COUNTER

Range: 103 ms to 15.873 ms

Fluke, Model PM6681/656

Accuracy: ±.033%

(PM6681/656)

MULTIMETER

Range: 0 to 1000 V dc

Hewlett-Packard, Model 3458A

Accuracy: ±.07%

(3458A)

OSCILLATOR

Range: 1 V ac

Tektronix, Type SG505

Frequency: 63 to 77 Hz

(MIS-30526/11)

Accuracy: ±.25%

OSCILLOSCOPE

Tektronix, Type 2465B-46

Range: 14 to 100 µs

(2465B-46)

Accuracy: ±3.0%

RESISTANCE STANDARD

Range: 4.21 Ω to 22 Ω

Biddle Gray, Model 71-650

(71-650)

Accuracy: ±0.03%

Range: 10 kΩ and 100 kΩ

Accuracy: +2.5%

THERMOMETER

Range: 70 to 85 oF

Azonix, Model A1012 (MIS38958)

Accuracy: ±1.0

SECTION III

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. Unless otherwise specified, verify the results 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 and TM 55-4920-401-

13&P for this TI.

d. Unless otherwise specified, all controls and control settings refer to the TI.