Probe Compensation; Sampling Modes - LeCroy WaveRunner Xi series Operator's Manual

Oscilloscopes
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Probe Compensation

Passive probes must be compensated to flatten overshoot. This is accomplished by means of a trimmer at the
connector end of the probe.
1. Attach the connector end of your PP008 probe to any channel.
2. Connect the probe end to the CAL output connector at the front of the oscilloscope.
3. Adjust the trim pot at the connector end of the probe until the square wave is as flat as possible.

SAMPLING MODES

Depending on your timebase, the following sampling modes are available:
WaveStream Mode - This fast viewing mode provides brightness-graded intensity with a decay time
similar to the action of phosphor on an analog screen. WaveStream mode operates at up to 10
GS/s with an update rate up to 8000 waveforms/second for better capture of higher frequency
abnormal events.
Real Time Mode - A single-shot (real time) acquisition is a series of digitized voltage values
sampled on the input signal at a uniform rate.
Sequence Mode - In sequence mode, the complete waveform consists of a number of fixed-size
segments acquired in single-shot mode
Roll Mode - This mode is invoked automatically for slow acquisitions when the time per division is
200 ms/div or greater. Roll mode will sample at 2 MS/s (depending on memory availability).
RIS Mode - Random Interleaved Sampling is an acquisition technique that allows effective sampling
rates higher than the maximum single-shot sampling rate. It is used on repetitive waveforms with a
stable trigger
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WRXi-OM-E Rev C

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