User Manual

Manual trigger: the instrument outputs pulse with over 1us pulse width from the beginning
of pulse train.
External trigger: the menu will hide the trigger output option which is enabled by external
modulation connector (FSK Trig connector). This connector should not be used as external
and internal at the same time.
h)Trigger Edge
Trigger edge can be designated when external digital modulation interface (FSK Trig
connector) is used as input. When it is used as input (i.e. internal trigger source), “rising
edge” means that rising edge of external signal triggers output of a pulse train, and “falling
edge” means that falling edge of external signal triggers output of a pulse train. In gating
mode, when polarity in parameter list is “positive”, external signal triggers output of a pulse
train at high level, and “negative polarity” means that external signal triggers output of a
pulse train at low level. When it is used as output (i.e. “internal” or “manual” trigger and
trigger output is “ON”), the default edge is “rising edge”. If you need to change, press
Param TrigEdge Fall (Gating mode: press Param Polarity Negative )
Comprehensive Example
First make the instrument run in pulse train mode, and then set a sine wave signal with
period of 5ms and amplitude of 500mVpp as waveform of pulse train, set type of pulse train
to be N-cycle, period of pulse train to be 15ms and recurring number to be 2.The specific
steps are as follows:
Use pulse train function
Press Menu Burst Type NCyc successively (press soft key Type to select if Type
is not highlighted) to set type of pulse train to be “N-cycle” mode.
Figure 4- 52 Set N cycle function
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