Amplitude Shift Keying (ASK)
When using ASK (Amplitude Shift Keying) modulation, you can configure the
generator to make its output amplitude “shift” between two preset amplitude values
(“carrier amplitude” and “modulating amplitude”). The “shift” rate (ASK Rate) is
determined by the signal level inside the instrument or from the [ExtTrig] connector at
the rear panel.
To Select ASK Modulation
Press Mod Type ASK to enable ASK function.
When Mod is enabled, Sweep or Burst will be disabled automatically (if
enabled currently).
After ASK is enabled, the instrument will generate ASK waveform with the
currently specified carrier and modulating waveform.
To Select Carrier Waveform Shape
ASK carrier waveform shape could be Sine, Square, Ramp or arbitrary waveform. The
default is Sine.
Press the front panel key Sine, Square, Ramp or (Arb Select Wform) to
select desired carrier waveform shape.
Pulse (basic waveform), Noise and DC could not be used as carrier waveform.
To Set Carrier Amplitude
After selecting carrier waveform shape, press Ampl/HiLevel to highlight “Ampl”, and
then use the numeric keyboard or knob to input desired amplitude. The available
amplitude range is limited by Resistant and Freq/Period. Please refer to the
“Output Characteristic” described in “
Specifications”.
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