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Basic Operation
When you press the SINGLE key, the oscilloscope will fill the
pre-trigger buffer, and continue to flow data through the
pre-trigger buffer until the Auto trigger overrides the
searching and forces a trigger. At the end of the trace, the
oscilloscope will stop and display the results.
Normal mode
Use Normal trigger mode for low repetitive-rate signals or
when Auto trigger is not required.
In Normal mode the oscilloscope must fill the pre-trigger
buffer with data before it will begin searching for a trigger
event. While searching for the trigger, the oscilloscope
overflows the pre-trigger buffer; the first data put into the
buffer is the first pushed out.
When the trigger event is found, the oscilloscope will fill the
post-trigger buffer and display the results. If the acquisition
was initiated by RUN/STOP, the process repeats. If the
acquisition was initiated by SINGLE, then the acquisition
stops.
In either Auto or Normal mode, the trigger may be missed.
This is because the oscilloscope will not recognize a trigger
event until the pre-trigger buffer is full.
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