The range of frequency is generated in only one band, from 20 to 35000 Hz.
The method of generation is different from other signal generators:
the variable frequency oscillator operates from 100 to 135 Khz, its output is beated with a fixed oscillator of 100 Khz in a mixer
the output of which, filtered and amplified, is the signal at the output connector.
The output is relatively a low distortion one due to the method of generation,
and a high level one with the push-pull final amplifier, two 6V6.
In the model SG-15A for the fixed oscillator is used a xtal oscillator, instead of the LC of the SG-15
Relationship to Similar Equipment
This equipment, with the signal generator ME-22/PCM, is part of Telephone Test Set TS-140/PCM.
- Power Requirements
- 50 w, 115 or 230 v ±10%, 50 to 70 cy, 1 phase ac
- Frequency Range
- 200 to 35,000 cy
- Frequency accuracy
- +- 10 cps from 200 to 1000 cps, +-20 cps from 1000 to 2000 cps, +-50 from 2000 to 35000 cps
- 600 ohms
- Power output
- -45 to +26 dbm +- 0.5 db
- Major Unit
- SG-15/PMC 19"w 13"d 8 3/4" h; 52 lbs
- Carring case
- CY-712/PCM 21 1/8"w 16 d 12 1/4 h; 30 lbs
Tubes, Crystals, Transistors
Reference Data and Literature
- TM 11-2096