TB 9-6625-1356-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Test Oscillator, Hewlett-Packard Models 651A, 651B and 652A (SG-763/U).
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.
Variations among models are described in text, tables and
figures.
b. Time and Technique. The time required for this calibration is approximately 8
hours, 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
Range: 100 Hz to 1 MHz
Accuracy: 2%
( 10% for line variation)
Range: 10-100 Hz and 1-10 MHz
Accuracy: 3%
( 10% for line variation)
Attenuator: 1
Models 651B and 652A (SG-763/U)
Range: -70 to +20 dBm
Accuracy: 0.075 dBm from -60 to +20 dBm
Model 651A
Range: -70 to +20 dBm
Accuracy: 0.1 dB/10 dB
See footnotes at end of table.