*TB 9-6625-2246-50
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
HEWLETT PACKARD MODEL 3458A
Headquarters, Department of the Army, Washington, DC
19 May 2003
Approved for public release; distribution is unlimited
REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS
You can improve this manual. If you find any mistakes or if you know of a way to improve these
procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to
Publications and Blank Forms) directly to Commander, U.S. Army Aviation and Missile
Command, ATTN: AMSAM-MMC-MA-NP, Redstone Arsenal, AL 35898-5000. A reply will
be furnished to you. You may also provide DA Form 2028 information to AMCOM via e-mail,
fax, or the World Wide Web. Our FAX number is: DSN 788-6546 or Commercial 256-842-
6546. Our e-mail address is: 2028@redstone.army.mil. Instructions for sending an electronic
2028 may be found at the back of this manual.
For the World Wide Web, use:
https://amcom2028.redstone.army.mil.
Paragraph
Page
IDENTIFICATION AND DESCRIPTION
Test instrument identification ............................
Forms, records, and reports................................
Calibration description .......................................
EQUIPMENT REQUIREMENTS
Equipment required ...........................................
Accessories required ...........................................
CALIBRATION PROCESS
Preliminary instructions ....................................
Equipment setup................................................
Dc voltage..........................................................
Resistance..........................................................
Dc current .........................................................
Ac voltage..........................................................
Frequency counter .............................................
ADJUSTMENT PROCESS
Preliminary instructions ....................................
Front terminal offset ..........................................
Rear terminal offset............................................
Dc gain..............................................................
Resistance and dc current...................................
Ac .....................................................................
Final procedure..................................................
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*This bulletin supersedes TB 9-6625-2246-50, 29 May 1992.
