TB 9-4931-488-35
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Harmonic distortion .............................................
Output level and meter accuracy (all models
except those containing option 004).................
Output level and meter accuracy (models
containing option 004).......................................
Output level flatness............................................
Internal modulation oscillator frequency
accuracy, output voltage and distortion ..........
AM sensitivity, accuracy, and distortion (all
models except those containing option 004) ....
AM sensitivity, accuracy, distortion, and
demodulated output (models containing
option 004) .........................................................
AM flatness (option 004 only)..............................
FM sensitivity, accuracy, and distortion ............
Power Supply........................................................
Final Procedure ....................................................
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Signal Generator, SG1112V1U (8460BOPT004), SG1112V2U (8640BOPT001),
MIS-28707TY2 (8640BH66) and Hewlett-Packard, Model 8640B, Options 001, 002, 003,
004, and H66. 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. Option variations are as listed below in (1) through (5).
(1) Option 001 provides a modulation oscillator that is continuously adjustable from
20 Hz to 600 kHz. The oscillator can also be set for 400 Hz or 1 kHz fixed tones.
(2) Option 002 provides an internal, active frequency doubler that extends the
(3) Option 003 protects the generator output circuits from accidental applications of
reverse power up to 50 W.
(4) Option 004 provides a demodulated output and modified AM circuitry for setting
very accurate AM depths. It also has a 1 dB output step attenuator in addition to the
standard 10 dB output step attenuator.
(5) Option H66 which includes option 001 provides an additional control for very fine
adjustment of the output level and improved harmonic content in the RF output signal.
