UNI-T UTG9000T Series, Руководство пользователя

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UTG9000T Series Function Abitrary Waveform Generator
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Select the source of modulation
UTG9000T function/arbitrary waveform generator can select internal or external modulation source.
When turn on PSK modulation, the default modulation source is internal. Rotate multifunction knob or
tap ModSrc tab to step through internal or external modulation source in PSK modulation setting
interface.
1) Internal source
When the modulation source is internal, the modulation waveform can be sine, square, rising
ramp, falling ramp arbitrary and noise wave. The default wave is sine wave. When turn on PWM
modulation, ModWave present Sine, rotate multifunction knob or tap word Sine to select the
waveform in modulation setting interface.
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Square wave: duty ratio 50%
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Rising ramp wave: symmetry 100%
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Falling ramp wave: symmetry 0%
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Arbitrary wave: the length of arbitrary wave limit at 4kpts by the method of select point
automatically
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Noise wave: white gaussian noise
2) 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 PWM duty ratio
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 duty ratio offset to 15% when
the external modulated signal is +5V, the duty ratio of the carrier wave (pulse wave) increase 15%,
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