TB 9-6625-2184-35
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Signal Generator, SG-71/FCC, SG-71A/FCC, SG-71B/FCC, SG-71C/FCC and
(Hewlett-Packard, Model 233A). The manufacturer's manual and TM 11-6625-358-15 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. None.
b. Time and Technique. The time required for this calibration is approximately 2
hours, using the dc and low frequency technique.
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).
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Range: 40 V at 10 kHz into 600 Ω
Meter
Accuracy: 5% FS
Frequency, stability,
Range: 50 Hz to 500 kHz
Accuracy: 2%
and UNBAL response
Output: ≥ 6 V ac into 600 Ω
Balanced output and
Range: 5 to 500 kHz
Accuracy: 1 dB
frequency response
Output: ≥ 42.5 V ac into 600 Ω
Distortion
Range: 10 to 100 kHz balanced output
Distortion: < 3%
Range: 50 Hz to 100 kHz unbalanced output
Distortion: < 1%
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Sets AN/GSM-286; AN/GSM-287; or AN/GSM-705. Alternate items may be used
by the calibrating activity. The items selected must be verified to perform satisfactorily
prior to use and must bear evidence of current calibration. The equipment must meet or
