TB 9-6625-2343-40
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
1. Test Instrument Identification.
calibration of Measuring Receiver, Hewlett-Packard Model 8902A. The manufacturer's
manual was used as the prime data source 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 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.
Table 1. Calibration Description
Test instrument
Performance specifications
parameters
Amplitude Modulation
Range: 0 to 99%
Accuracy:
Carrier:
Rate:
Depth:
2% of reading 1 digit
150 kHz to 10
MHz
50 Hz to 10 kHz
5 to 99%
3% of reading 1 digit
150 kHz to 10
MHz
20 Hz to 10 kHz
to 99%
1% of reading 1 digit
10MHz to 1.3
GHz
50 Hz to 50 kHz
5 to 99%
3% of reading 1 digit
10 MHz to 1.3
GHz
20Hz to 100 kHz
to 99%
Flatness:
Accuracy:
Carrier:
Rate:
Depth:
0.3% of reading 1 digit
10 MHz to
1.3 GHz
90 Hz to 10 kHz
20 to
80%
Demodulated output distortion:
Accuracy:
< 0.3% THD < 50% depth
< 0.6% THD < 95% depth
Residual AM:
Accuracy:
< 0.01% rms 50 Hz to 3 kHz bandwidth
FM rejection :
< 0.2% AM, 250 kHz to 10 MHz carrier; < 5 kHz peak deviation; 400 Hz and 1
kHz rates; 50 Hz to 3 kHz bandwidth
< 0.2% AM, 10 MHz to 1.3 GHz carrier; < 50 kHz peak deviation; 400 Hz and
1 kHz rates; 50 Hz to 3 kHz bandwidth