HP 431B, Calibration Procedure

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*This bulletin supersedes TB 9-6625-086--35, 31 December 1974.
TB 9-6625-086-35
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
POWER METER, HEWLETT-PACKARD
MODELS 431B AND 431C (AN/USM-260)
Headquarters, Department of the Army, Washington, DC
12 December 1975
♦ ♦ REPORTING OF ERRORS ♦ ♦
You can help improve this publication by calling attention to errors and by
recommending improvements and stating your reasons for the
recommendations. Your letter or DA Form 2028, Recommended Changes to
Publications, should be mailed directly to Commander, U.S. Army Aviation and
Missile Command, ATTN: AMSAM-TMD-EP, Redstone Arsenal, AL 35898-5000.
FAX to DSN 788-2313 (commercial 256-842-2313). A reply will be furnished
directly to you.
Paragraph Page
SECTION I. IDENTIFICATION AND DESCRIPTION
Test instrument identification............................ 1 2
Calibration data card, DA Form 2416 ................ 2 2
Calibration description ....................................... 3 2
II. EQUIPMENT REQUIREMENTS
Equipment required ........................................... 4 2
Accessories required ........................................... 5 3
III. PRELIMINARY OPERATIONS
Preliminary instructions .................................... 6 4
Equipment Setup................................................ 7 4
IV. CALIBRATION PROCESS
Coarse null.......................................................... 8 5
Zero and vernier ................................................. 9 7
Range and tracking check with power meter
calibrator.......................................................... 10 7
Range and tracking without power meter
calibrator.......................................................... 11 9
Oscillator frequency............................................ 12 11
Power supply ...................................................... 13 12
Final procedure................................................... 14 13