TB 9-6625-2163-24
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Mode 4 decoder characteristics .............................
Mode 4 reply evaluator ..........................................
Mode 4 power supply check ...................................
Power supply ..........................................................
Final procedure ......................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Transponder Test Set TS-1809 (AN/APM-123(V)1). TM 11-6625-667-45 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 12
hours, using the dc and low frequency and microwave techniques.
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 parameters
Performance specifications
Range: 1030 MHz (crystal controlled)
Accuracy: 0.02% ( 206 kHz)
Power output
Range: -6 dBm (at antenna terminal)
Sidelobe suppression
Range: 3 pulses
