TB 9-6625-2211-24
Paragraph
Page
Mode 4 reply accuracy..........................................
Variable gating, mode 4 challenge and
GTC trigger accuracy ......................................
RF output frequency accuracy.............................
Output power accuracy ........................................
Modulator and demodulator accuracy ................
Input power accuracy ...........................................
Input frequency accuracy.....................................
Decode ...................................................................
SIF challenge video accuracy ..............................
Power supply ........................................................
Final procedure ....................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Radar Test Set, AN/TPM-25A (TS-3394A). TM 11-6625-2610-40 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 5
hours, 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.
Table 1. Calibration Description
Test instrument parameter
Performance specifications
Timing markers
Range: 10 MHz
Accuracy:
r2 kHz
> .5 V
Amplitude:
Pulse repetition rate
Range: 500 to 9999 Ps
Accuracy:
r0.2 Ps (500 to 2000 Ps)
r0.01% (2000 to 9999 Ps)
