Roll Mode - LeCroy WaveMaster 8600A Operator's Manual

X-Stream Operator's Manual

Roll Mode

Roll mode applies only to WavePro 7000A and WaveRunner 6000A series scopes. It is invoked
automatically when the time per division is 500 ms/div or greater. However, you can cancel Roll
Mode and return to Real Time mode at any time.
Roll mode displays, in real time, incoming points in single-shot acquisitions that have a sufficiently
low data rate. The oscilloscope rolls the incoming data continuously across the screen until a
trigger event is detected and the acquisition is complete. The parameters or math functions
connected to each channel are updated every time the roll mode buffer is updated, as if new data is
available. This resets statistics on every step of Roll mode that is valid because of new data.
Note: If the processing time is greater than the acquire time, the data in memory gets overwritten. In this case, the
instrument issues the warning: Channel data is not continuous in ROLL mode!!! and rolling will start over again.
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