UNI-T UTG9504T User Manual page 47

UTG9000T Series Function Abitrary Waveform Generator
When the modulation source is external, the modulation wave and frequence will be hidden in parameter list. The
PM offset is controlled by the ±5V signal level on the external analog modulation input terminal (Modulation In
connector) on the back panel. For example, if set the phase deviation to 180°, that is equal to +5V of the external
modulated signal, the lower external signal level produces less deviation.
Modulation waveform frequency settings
When the modulation source is internal, it can set the modulation waveform frequency, and the frequency
~
range is between 1μHz
2MHz, the default range is 100Hz. Rotate multifunction knob, push direction key or tap
ModFreq tab to pop-out visual numeric keyboard to enter values and select unit in PM modulation setting interface.
When the modulation source is external, the modulation wave and frequence will be hidden in parameter list. Use
the external waveform to modulating the carrier wave. The intput external modulating signal frequency range is
between 0Hz~50kHz.
Modulated phase deviation settings
Phase deviation indicates the phase deviation changes between in the PM-modulated waveform phase and the
carrier wave phase.Phase deviation range can set 0°~360°, the default range is 180°. 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.
Comprehensive example
In PM modulation mode, set an internal 200Hz sine wave as the modulating signal, another sine wave with frequency 900Hz,
amplitude100mVpp as the carrier wave signal, and set the phase deviation to 200°, the settings steps as following,
1） Turn on PM modulation mode: tap CH1→Modulate→FM accordingly.
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