5.Panel Operation
Press the PWM Rate softkey to set the modulating wave frequency. The
range is 2 mHz – 1 MHz (for internal source only).
(7) Set duty cycle deviation:
Duty cycle deviation is the deviation (in %) of the modulating wave duty
cycle relative to the original pulse duty cycle. Press the Deviation softkey
to set the PWM duty cycle deviation.
Duty cycle deviation range: 0% ≤ deviation ＜ upper limit (upper limit is
carrier duty cycle or 100% minus carrier duty cycle, the smaller of the
two).
ASK (Amplitude Shift Keying)
Amplitude Shift Keying modulation is a modulation technique that shifts the
output signal amplitude between two amplitudes: the carrier amplitude and
modulating amplitude. Carrier wave amplitude shifts to the modulating
amplitude with the specified ASK rate, and then returns to the original
amplitude. The ASK user interface is shown below.
Mod
Type
Load
Parameter 1
Parameter 2
Modulating wave
Carrier wave
Figure 5-19: ASK user interface
How to set the parameters of ASK
(1) Press the Mode function key, press the NextPage softkey,then press the
ASK softkey to enter ASK user interface.
(2) Select carrier wave shape:
The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except
DC). Press , , , or to select a desired carrier wave
shape.
(3) Set carrier wave parameters:
Press the wave shape key of the selected carrier wave to display the
waveform and parameters of the carrier wave. You can change the
parameters of the carrier wave. Press the corresponding carrier waveform
To Next Page
Loading...
