TB 9-6625-1213-24
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CALIBRATION PROCESS FOR AC
AMPLIFIER HEWLETT-PACKARD
MODEL 465A
Preliminary instructions.......................................
Equipment setup ...................................................
Gain, stability, and frequency response ..............
Distortion ...............................................................
Power supply .........................................................
Final procedure .....................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Ac Amplifier AM-1881/U (Hewlett-Packard Model 450A), and Hewlett-
Packard Model 465A. The manufacturers' manuals were used as the prime data sources in
compiling these instructions. The equipment being calibrated will be referred to as the TI
(test instrument) throughout this bulletin.
a. Model Variations. Differences among models are described within the text.
b. Time and Technique. The time required for this calibration is approximately 1
hour per instrument, using the dc and low frequency technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Models AM-1881/U and 450A
Power input requirements
115 V 10%, 50 to 1000 Hz
Gain
AM-1881/U
20 or 40 dB 0.13 dB at 1 kHz
450A
20 or 40 dB 0.125 dB at 1 kHz