User Manual 43
5.5.6 Modulating Amplitude
Press Amplitude to set the modulating amplitude.
Use the numeric keyboard or direction keys and knob to input the desired amplitude value.
The range of amplitude (HighZ) is from 1mV to 20V and the default is 100mV.
5.6 2FSK
You can configure the instrument to "shift" its output frequency between two preset values using
2FSK modulation. The rate at which the output shifts between the two frequencies (called the
"carrier frequency" and the "hop frequency") is determined by the internal signal level of the
instrument or the signal level on the front-panel [Sync/Mod/Trig] connector.
5.6.1 Select 2FSK Modulation
Press Mod->Type->2FSK to enable this function.
When Mod is enabled, Sweep or Burst will be disabled automatically.
After 2FSK is enabled, the instrument will generate 2FSK waveform with the currently specified
carrier and modulating waveforms. To avoid multiple waveform changes, enable modulation
after configuring the other modulation parameters.
5.6.2 Carrier Waveform Shape
2FSK carrier shape: Sine (default), Square, Ramp, Pulse, Arbitrary (except DC) or Harmonic
waveform.
Press the front panel key Sine, Square, Ramp, Pulse, Arb -> Type or Harmonic to select a
desired carrier waveform shape.
Noise and DC could not be used as carrier waveform.
5.6.3 Carrier Frequency
Choose carrier waveform shape, press Frequency/Period to highlight "Frequency", and then use
the numeric keyboard or direction keys and knob to input the desired frequency.
Different carrier waveforms have different frequency ranges as shown in the table below. For all
the carrier waveforms, the default value is 1KHz.
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