User Manual

Figure 4-48 Select N cycle mode
Gating mode
Press soft function keys Type → Gated successively on the interface to enter gating mode.
In mode of gating pulse train, trigger source, trigger output, trigger edge, burst period (period
of pulse train) and recurring number will be automatically hidden in parameter list. As only
external trigger source can be used, waveform generator is triggered according to hardware
of external digital modulation interface (FSK Trig connector) of back panel. When polarity
is positive and trigger input signal is at high level, a continuous waveform is output; when
trigger input signal is at low level, the current waveform period is finished first and then
stop at the level corresponding to initial phase of the waveform selected. For noise waveform,
when gated signal is spurious, output will be immediately stopped. Polarity can be changed
with multi-functional knob and direction key on the interface for selecting gating mode (as
shown in the figure below) or by pressing soft key Param → Polarity .
Figure 4-49 Select gating mode
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