DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

*TB 11-6625-678-35

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

CHARGER BATTERY ANALYZER

AN/ASM-137 (NSN 6135-00-788-8481)

AND AN/ASM-137A (NSN 6130-00-238-4433)

Headquarters, Department of the Army, Washington, DC

3 May 1977

REPORTING OF ERRORS

You can help improve this publication by calling attention to errors and by

recommending improvement and stating your reasons for the recommendations.

Report these errors or recommendations on DA Form 2028 (Recommended

Changes to DA Publications and Blank Forms) direct to: Commander, U.S. Army

Electronics Command, ATTN: DRSEL-MA-Q, Fort Monmouth, N.J. 07703. A reply

will be furnished direct to you.

Paragraph

Page

Section

IDENTIFICATION AND DESCRIPTION

Test Instrument identification ....................................................................

1-1

Calibration data card, (DA Form 2416) ......................................................

1-2

Calibration description ..............................................................................

1-3

II.

EQUIPMENT REQUIREMENTS

Equipment required ..................................................................................

2-1

Accessories required................................................................................

2-2

III.

PRELIMINARY OPERATIONS

Preliminary instructions ............................................................................

3-1

Equipment setup ......................................................................................

3-2

IV.

CALIBRATION PROCESS

Timer accuracy ........................................................................................

4-1

Voltmeter accuracy ..................................................................................

4-2

Voltmeter accuracy using AN/GSM-256 calibration facility ..........................

4-3

Ammeter accuracy ...................................................................................

4-4

Ammeter accuracy using AN/GSM-256 calibration facility ...........................

4-5

Charge current .........................................................................................

4-6

Discharge current ....................................................................................

4-7

Battery Low .............................................................................................

4-8

Final procedure........................................................................................

4-9

*This bulletin supersedes TB 11-6625-678-35/1, 22 June 1966.