The model SG-83 Standard Signal Generator is a laboratory-test
instrument which generates accurately known r-f voltages
in the 360 kc to 30 mc range. Either unmodulated or
modulated output may be obtained.
The r-f output is adjustable from 0.6 microvolt to
16,000 microvolts. The output signal level is read
directly in decibels with zero db equal to one microvolt
across a 50-ohm load. Other output levels from -4 db (0.6 uV)
to +84 db (16,000 uV) are obtainable with various
settings of the switch attenuator and output meter.
On the front panel of the instrument is a chart to
facilitate rapid conversion from db to uV.
The modulation of the SG-83 output signal by the internal
400 cps oscillator is held accurately to 30% amplitude
modulation, completely free of incidental frequency modulation.
The SG-83 is battery powered from an inexpensive
internal battery which will provide one year of
service in average use.