*TB 9-6625-2138-35
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
DATA ERROR ANALYZER
HEWLETT-PACKARD, MODEL 1645A
Headquarters, Department of the Army, Washington, DC
18 September 2003
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 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.............................................
Preliminary instructions......................................
Equipment Setup .................................................
Phase lock loop .....................................................
INT XMIT clock ....................................................
Transmit pattern..................................................
Jitter/total peak....................................................
Dropout
Power supply ........................................................
Final procedure ....................................................
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*This technical bulletin supersedes TB 9-6625-2138-35, dated 8 January 1985, including all changes.