SECTION I IDENTIFICATION AND DESCRIPTION

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin

2. Calibration Data Card, DA Form 2416. Forms,

provides instructions for the calibration of Test Set TS-

records, and reports required for calibration personnel at

26/TSM, TS-26A/TSM and TS-26B/TSM which will be

all levels are prescribed by TM 38-750. DA Form 2416

referred to as the "TI" (test instrument) throughout this

(Calibration Data Card) must be annotated in accordance

bulletin.

with TM 38-750 for each calibration performed.

a. Model Variations.

Models differ slightly in

electrical and maintenance parts, but all models can be

3. Calibration Description.

TI parameters and

calibrated by this procedure.

performance specifications which pertain to this calibration

b. Time and Technique. The time required for this

are listed in table 1.

calibration is approximately 1 hour, using the dc low

frequency technique.

Table 1. Calibration Description

Test instrument

Performance

parameters

specifications

Dc Voltage:

Ranges

0 to 3,30,300,600

Sensitivity

1,000 ohms per volt

±3 of full scale

Accuracy

Resistance:

Ranges

0 to 1K ohm (RX1, .35 ohms center scale)

0 to 10K ohm, 0 to 100K ohm, 0 to 1 megohm,

0 to 10 megohm.

Test Voltages*

0 to 10K ohm, 100K ohm, 1 megohm, 4.5 vdc

±10% at midscale.

Accuracy

*This specification is for information only and is not necessarily verified In this procedure.

SECTION II

EQUIPMENT REQUIREMENTS

specifications listed in table 2. The accuracy's listed in

4. Equipment Required. Table 2 identifies the specific

table 2 provide a four-to-one accuracy ratio between the

equipment used in this calibration procedure.

This

standard and TI.

equipment is issued with secondary transfer standards

calibration set, NSN 6695-00-621-7877, Secondary

5. Accessories Required. The accessory listed in

Transfer Standards Calibration Set AN/GSM256, NSN

4931-00-525-8175, or electronic maintenance shops and

table 3 is issued with secondary transfer standards

is to be used in performing this procedure. Alternate items

calibration set, NSN 6695-00-621-7877, Secondary

may be used by the calibrating activity when the

Transfer Standards Calibration Set AN/GSM-256, NSN

equipment listed in table 2 is not available. The items

4931-00-525-8175, or electronic maintenance shops and

selected must be verified to perform satisfactorily prior to

is to be used in this calibration procedure.

When

use and must bear evidence of current calibration. The

necessary, this item may be substituted by an equivalent

equipment must meet or exceed the minimum use

item unless specifically prohibited.