UNI-T UTG9504T User Manual page 101

UTG9000T Series Function Abitrary Waveform Generator
waveform to modulating the carrier wave. The intput external modulating signal frequency range is between
0Hz~50kHz.
Duty ratio deviation settings
Duty ratio deviation is deviation of modulated waveform from the current carrier duty ratio. The range of PWM can set
to 0% 49.999825%, the default is 49.999825%. Rotate multifunction knob, push direction key or tap DutyDev tab to
~
pop-out visual numeric keyboard to enter values and select unit in FM modulation setting interface.
Duty ratio deviation is deviation of modulated waveform from the current carrier duty ratio (express by %).
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Duty ratio deviation can't exceed the duty ratio of the current pulse wave.
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The sum of duty ratio deviation and the current pulse wave must be ≤99.99%
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The minimum duty ratio of pulse wave and the currenr edge time will effect the duty ratio settings.
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Comperhensive example
In PWM modulation mode, set an internal 1kHz sine wave as a modulating signal, another pulse wave with
freqeuency 10kHz, amplitude 2Vpp，duty ratio 50%, rising/falling edge time 100ns as a carrier wave signal , and set
the frequencyduty ratio deviation to 40%, the settings steps as following,
1） Turn on FM modulation mode: tap CH1→Modulate→FM accordingly.
2）Set the parameter of the carrier wave signal
Tap Base to select sine as the carrier wave (the default option is sine), so this step has no change.
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