TB 9-6625-1978-24
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SECTION
CALIBRATION PROCESS FOR AUTOHET
351D( )
Preliminary instructions ..................................
Equipment setup...............................................
Time base stability............................................
Band I input sensitivity....................................
Band II input sensitivity ..................................
Band III input sensitivity.................................
Power supply .....................................................
Final procedure .................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Microwave Pulse Counter, EIP, Model 451 and Autohet Frequency Counter,
EIP, Model 351D( ). 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. None.
b. Time and Technique. The time required for this calibration is approximately 2
hours per item, using the microwave 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.