TB 9-6625-2330-24
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Amplitude modulation ...................................
Frequency modulation ...................................
Phase modulation...........................................
Final procedure ..............................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Signal Generator, SG-1207A/U (Wayne-Kerr, Model PSG2400L).
TM 43-6625-911-14&P 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. There are at least two different SG-1207A/U versions fielded.
While there are no operational differences between versions, there are internal differences
that are maintenance significant. Therefore, the only adjustment included in this
procedure is for the 10 MHz Ref Adj.
Additional adjustments are contained in
TM 43-6625-911-14&P.
b. Time and Technique. The time required for this calibration is approximately 6
hours, using the dc and low frequency and microwave technique.
2. Forms, Records, and Reports. Forms, records, and reports required for calibration
personnel at all levels are prescribed by TB 750-25.
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: 100 kHz to 2000 MHz
Frequency
Accuracy: +1 ppm
Time stability: +0.02 ppm/24hour
Line stability: +1 ppm, 10% line change1
Range: >15 to 125 dBm2
RF output
Flatness: +1.5 dB (100 kHz to 1000 MHz)
+2.5 dB (1000 MHz to 2000 MHz)
Attenuator accuracy: +1.5 dB (100 kHz to 1000 MHz)
+2.5 dB (1000 MHz to 2000 MHz)
See footnotes at end of table.