Agilent Technologies E5071C Manual page 277

E5071C
External trigger output function displays the difference result by setting the
Point trigger as follows:
After Point:Pulse is generated after every measurement point.
Before Point:Pulse is generated before first measurement point. Rest of
pulse are same timing as After Point. Number of pulse is same as number
of measurement point.
After Point:Pulse is generated after every measurement point.
Before Point:Pulse is generated before every measurement point.
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