90
Carrier waveform
PWM carrier waveform can only be pulse wave. After PWM is selected, press Pulse to enter interface of carrier waveform.
Figure 4- 108
Set carrier waveform
Set carrier frequency
The frequency range of pulse wave is 1μH~50MHz. Default frequency is 1kHz. To set carrier frequency, please use the
multi-functional control and direction keys in the interface or press soft function key Freq, input the required value and
select the unit.
Set carrier duty ratio
The range of duty ratio of pulse wave is 0.01%~99.99%. Default duty ratio is 50%. To set carrier duty ratio, please use the
multi-functional control and direction keys in the interface or press soft function key Duty, input the required value and
select the unit.
Select modulation source
The function/arbitrary waveform generator can select internal or external modulation source. After you use PWM function,
the modulation source is internal by default. You can change it with the multi-functional control on the interface for using
frequency modulation function or by pressing Source.
Note:
the modulation source can only be selected after PWM function is used. Press MOD, Type and PWM in sequence
(if “Type” is not highlighted, it may be necessary to press soft key Type twice to display
the next screen of sub-tags) to use
PWM function.
