TFG6800 Series Function/Arbitrary Waveform Generator Users’ Guide
Suin Instruments Co., Ltd
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pulse width is positive value, pulse interval is negative value. When positive pulse or negative
pulse is output, output signal’s amplitude is half of the setting value.
3.12.6 Trigger source
: Press
〖
Source
〗
to choose trigger source. If internal is chosen, instrument
will use internal trigger source to continuously output double pulse signal. In this condition,
double pulse frequency and period setting is effective. If external is chosen, instrument will use
external trigger source and double pulse frequency and period setting will be ignored. But external
trigger signal’s period should conform to the following rules. Input external signal from rear
panel’s
《
Trigger In/Out
》
port.
Trigger signal’s period>(first pulse width+ interval time + second pulse width+8ns)
3.12.7 Sync output
: Sync signal’s period is equal to double pulse’s period, sync signal’s width is
equal to first pulse’s width. If external or manual trigger is selected, sync signal will be decided by
external trigger or manual trigger signal.
3.13 Harmonic Synthesis
According to Fourier transform, any periodic function can decompose into several sine waves with
different frequencies, amplitudes and phases. In contrast, we can also use several sine waves with
different frequencies, amplitudes and phases to compose a predicted periodic arbitrary waveform.
Using this method, we can accurately simulate all kinds of arbitrary waveforms in our real life,
and supply perfect signal testing source to the testing instrument.
3.13.1 Function selection
: Press
【
Harmonic
】
to enter harmonic synthesis function and display
harmonics list and operation menu.
3.13.2 Harmonic order
: Harmonic order defines that harmonic frequency is multiple of
fundamental frequency. It must be positive integer. Harmonic order is set to 1, that’s fundamental
