DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
DIGITAL VOLTMETER,
HEWLETT-PACKARD MODEL 3440A
WITH 3444A AND 3445A PLUG-INS AND
DIGITAL MULTIMETER,
DATA TECHNOLOGY MODEL 360
Headquarters, Department of the Army, Washington, DC
28 April 2008
Distribution Statement A: 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 or 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 send in your comments electronically to our E-mail address:
2028@redstone.army.mil or by fax 256-842-6546/DSN 788-6546. For the World Wide Web use:
https://amcom2028.redstone.army.mil. Instructions for sending an electronic 2028 can be found at
the back of this manual.
Paragraph
Page
Test instrument identification ....................................
Forms, records, and reports ........................................
Calibration description................................................
EQUIPMENT REQUIREMENTS
Equipment required ....................................................
Accessories required ....................................................
CALIBRATION PROCESS FOR DIGITAL
VOLTMETER, HEWLETT-PACKARD MODEL
3440A WITH PLUG IN MODELS 3444A OR 3445A
Preliminary instructions .............................................
Equipment setup..........................................................
Dc volts and stability ...................................................
Resistance (3444A only) .............................................
Dc current (3444A only)
Ac Volts
(3445A only)
Power supply ................................................................
Final procedure ............................................................
_________
*This bulletin supersedes TB 9-6625-1314-35, dated 30 August 1979, including all changes.