SECTION I IDENTIFICATION AND DESCRIPTION

TB 11-6625-620-35-1

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE

FOR

TELETYPEWRITER TEST SET TS-799/UGM-l

Headquarters, Department of the Army, Washington, D.C.

14 May 1974

Paragraph

Page

IDENTIFICATION AND DESCRIPTION

SECTI0N

Purpose and scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Reporting of technical bulletin improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Descriptive data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

General instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Difference among models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

II. EQUIPMENT REQUIREMENTS

Equipment required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . 2-l

Accessories required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

III. PRELIMINARY OPERATIONS

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Teat Instrument controls...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

IV. CALIBRATION PROCESS

SECTION

Baud rate frequency test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Distortion generation test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Power supply test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Final procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

SECTION I

IDENTIFICATION AND DESCRIPTION

tronics Command, ATTN: AMSEL-MA-DS, Fort Mon-

1-1. Purpose and Scope. This bulletin provides in-

formation for the `periodic calibration of

mouth, NJ 07703.

Teletypewriter Test Set TS-799/UGM-1. It is to be

1-3. Descriptive Data. Teletypewriter Test Set TS-

used by personnel trained and qualified in the use of

799/UGM-l is a transistorized test set, consisting of

calibration equipment. Since calibration personnel

three main functional circuits: the test message

are trained and qualified in the usage of test and

generation logic, the distortion generation logic, and

measuring equipment, detailed instructions con-

the output circuits. Additional data is listed in a, b,

cerning the operation and use of these equipments

and c as follows:

are not contained in this bulletin.

a. Identification.

1-2. Reporting of Technical Bulletin Im-

Nomenclature ., . . . . . . .Test Set, Teletypewriter TS-

provements. The reporting of errors, omissions, and

799/UGM-1

recommendations for improving this bulletin is

Federal stock number 6625-975-0196

Size . . . . . . . . . ... . . 82 3/32 x 17 1/8 x 8 7/16 in.

authorized and encouraged. Submit reports on DA

Weight . . . . . . . . . . . . . . . . . . . . . . ..21 lbg

Form 2028 (Recommended Changes to Publications

References . . . . . . . . . . . . . . . . . . ..TM 11-6625-620-12

and Blank Forms) direct Commander, US Army Elec-

TM 11-6625-620-45-1