UNI-T UTG9504T User Manual page 42

0Hz~50kHz.
Modulated frequency deviation settings
Frequency deviation indicates the frequency deviation changes between in the FM-modulated wave frequency and
the carrier wave frequency. FM deviation range can set from 0μHz to half of the maximum current carrier wave
frequency. The default range is 1kHz. Rotate multifunction knob, push direction key or tap ModFreq tab to pop-out
visual numeric keyboard to enter values and select unit in modulation setting interface.
The frequency deviation must ≤ the carrier wave frequency, if the frequency deviation is greater than

fundamental frequency, the function/arbitrary waveform generator automatically limits the deviation to the
maximum which allowed by the current fundamental frequency.
The sum of the frequency deviation and the carrier wave frequency must ≤ the maximum of the current

fundamental frequency, if the frequency deviation value is valid, the function/arbitrary waveform generator
automatically limits the deviation to the maximum which allowed by the current fundamental frequency.
Comprehensive example
In FM modulation mode, set an internal 2kHz square wave as a modulating signal, another sine wave with
freqeuency 10kHz, amplitude 100mVpp as a carrier wave signal , and set the frequency deviation to 5kHz, the
settings steps as following,
1） Turn on FM modulation mode: tap CH1→Modulate→FM accordingly.
2）Set the parameter of modulating signal
Base on the step 1) to tap ModFreq tab to pop-out visual numeric keyboard to enter 2kHz.
UTG9000T Series Function Abitrary Waveform Generator
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