TB 9-6625-2296-35
Paragraph
Page
Generator frequency modulation..........................
FM deviation meter (peak) ...................................
Amplitude modulation meter................................
Frequency error meter and RF counter ...............
AF counter..............................................................
Power supply..........................................................
J-4843A/GRM and PL-1536/GRM Self Test
(AN/GRM-122 only ................................................
J-4843/GRM Self Test (AN/GRM-114B only) ......
Final procedure......................................................
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Radio Test Set, AN/GRM-114B, AN/GRM-122 and TS-4317/GRM. The
manufacturers' manuals, TM 11-6625-3245-40, and TM 11-6625-3244-40 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 16
hours, using the dc and low frequency and microwave 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
RF SIGNAL GENERATOR
Frequency Range
500.0 kHz to 999.9999 MHz
0.5 PPM
Accuracy
Output Level Range
-122 to 0 dBm
2.0 dB @ 0 to ≤ -90 dBm1
Accuracy
2.5 dB @ -122 to -90 dBm
3.5 dB >400 MHz
See footnote at end of table.
