HP 431B Calibration Procedure page 2

TB 9-6625-086-35
Change 1
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
29 August 1977
TB 9-6625-086-35, 12 December 1975, is changed as follows:
Page 5, paragraph 10a(3) is superseded as follows:
(3) Position the TI RANGE switch to the .01 MW position and adjust the zero
controls for 0.00 V dc on the dc voltmeter.
Page 8, figure 4 is superseded as follows:
Figure 4. Range and tracking check without power meter calibrator.