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carrier and modulating waveforms. To avoid multiple waveform changes, enable modulation
after configuring the other modulation parameters.
5.5.2 Carrier Waveform Shape
ASK carrier shape: Sine (default), Square, Ramp, Pulse, Arbitrary (except DC) or Harmonic
waveform.
Press[Wave] button on the front panel to select the desired carrier waveform.
Noise and DC could not be used as carrier waveform.
5.5.3 Carrier Waveform Amplitude
After selecting the carrier waveform, press [Setting]>Amplitudesoftkey on the front panel, use
the numeric keypad or direction keys and knob to input the desired amplitude.The amplitude
range is limited by frequency.Please refer to the "Output Characteristics" described in
"
Specifications".
5.5.4 Modulation Source
Press [Mod] > Signal Source to select Internal or External Modulation Source.
Internal Source
When internal modulation source is selected, the modulating waveform is set as a Square with
50% duty cycle, and the rate at which the output amplitude "shifts" between "carrier amplitude"
and "modulating amplitude" is determined by "ASK Rate".
External Source
When external modulation source is selected, the generator receives the external modulating
signal from the[FSK/Trig/Sync/Extmod] connector on the rear panel.
Note: The [FSK/Trig/Sync/Extmod]connector is different when controlling ASK and AM/FM/PM
modulations externally.
5.5.5 ASK Rate
When internal modulation source is selected, press [Mod] > Ratesoftkey to set the rate at which
the output amplitude shifts between "carrier amplitude" and "modulation amplitude".
Use the numeric keypad or direction keys and knob to input the desired rate value.
The rate range is from 2mHz to 1MHz and the default is 100Hz.
Note: This menu will be grayed out and disabled when the external modulation source is selected.
User Manual 42
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