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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
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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).
directly to you.
SECTION
I.
II.
III.
IV.
_____________
*This bulletin supersedes TB 9-6625-086--35, 31 December 1974.
TB 9-6625-086-35
12 December 1975
♦ ♦ REPORTING OF ERRORS♦ ♦
improvements
and
Your letter or DA Form 2028, Recommended Changes to
IDENTIFICATION AND DESCRIPTION
Test instrument identification............................
Calibration data card, DA Form 2416 ................
Calibration description .......................................
EQUIPMENT REQUIREMENTS
Equipment required ...........................................
Accessories required ...........................................
PRELIMINARY OPERATIONS
Preliminary instructions ....................................
Equipment Setup................................................
CALIBRATION PROCESS
Coarse null..........................................................
Zero and vernier .................................................
Range and tracking check with power meter
calibrator..........................................................
Range and tracking without power meter
calibrator..........................................................
Oscillator frequency............................................
Power supply ......................................................
Final procedure...................................................
stating
your
reasons
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