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automatically to the maximum value allowed.
The sum of frequency deviation and the carrier frequency must not be greater
than the maximum frequency of the function used plus 100 KHz (50.1 MHz for
sine and 25.1 MHz for square, 300 kHz for ramp, and 10.1 MHz for arbitrary
waveforms). If a greater frequency deviation is specified, the waveform
generator will automatically adjust it to the maximum value allowed.
When an external source is selected, the carrier is modulated with an external
waveform. The frequency deviation is controlled by the ±5v signal on the rear
panel
Modulation In
connector. For instance, if a deviation of 100kHz is specified,
then a +5V signal level corresponds to a 100KHz increase in frequency. Lower
external signal levels produce less deviation and negative signal levels reduce
the frequency below the carrier frequency.
If the deviation causes the carrier waveform to exceed a frequency boundary for
the current duty cycle (square waveform only), G5100A will automatically
adjust the duty cycle to the maximum value allowed with the present carrier
frequency.
FM:DEViation? [MINimum|MAXimum]
Query the peak frequency deviation in frequency modulation. The peak
frequency deviation in hertz will be returned.
FM:SOURce {INTernal|EXTernal}
Specify the modulating signal source. The default is Internal. When an external
source is selected, the carrier is modulated with an external waveform. The
frequency deviation is controlled by the ±5v signal on the rear panel
Modulation
In
connector. For instance, if a deviation of 100kHz is specified, then a +5V
signal level corresponds to a 100kHz increase in frequency. Lower external
signal levels produce less deviation and negative signal levels reduce the
frequency below the carrier frequency.
FM:SOURce?
Query the modulating source in frequency modulation. “INT” or “EXT” string
indicating the modulating signal source will be returned.
FM:STATe {OFF|ON}
Summary of Contents for G5100A
Page 5: ...5 D APPLICATION PROGRAMS 173 ...
Page 71: ...71 Schematic of Receiver ...
