UNI-T UTG9504T User Manual page 36

 Square wave: duty ratio 50%
 Rising ramp wave: symmetry 100%
 Falling ramp wave: symmetry 0%
 Arbitrary wave: the length of arbitrary wave limit at 2kpts by the method of select point automatically
 Noise wave: white gaussian noise
1) External source
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 AM modulation depth 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 modulation depth to 100%, the output of AM amplitude is maximum when the external modulation signal is +5V;
the output of AM amplitude is minimum when the external modulation signal is -5V.
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 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 modulation wave. The intput external modulating signal frequency range is between
0Hz~50kHz.
Modulation depth settings
Modulation depth indicates the change of the extent of amplitude, use percentage to express. AM modulation depth range
can set between 0%~120%, the default range is 100%.If the modulation depth is 0%, then output a constant amplitude (the
half of the carrier wave amplitude); if the modulation depth is 100%, the output amplitude will change by the modulation
waveform. When the modulation depth is greater than 100%, the instrument will not output greater than ±5V peak-to- peak
voltage (connect with the terminal of 50Ω.)Rotate multifunction knob and direction key or tap ModDepth tab to pop-out
visual numeric keyboard to enter values. When the modulation source is external, the output amplitude 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 modulation depth to 100%, the output of AM amplitude is maximum when the external modulation signal is +5V;
the output of AM amplitude is minimum when the external modulation signal is -5V.
Comprehensive example
In AM modulation mode, set an internal 200Hz sine wave as a modulating signal, another carrier wave signal with freqeuency
10kHz, amplitude 200mVpp, duty ratio 45%, and set the modulation depth to 80%, the settings steps as following,
UTG9000T Series Function Abitrary Waveform Generator
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