Oscilloscope Reference Interactions of Roll Mode and other instrument settings
Interactions of Roll Mode and other instrument settings
Roll mode can interact with other instrument settings:
If Roll mode is on and you turn on Fast Acquisitions, Roll mode will be s uppressed until you turn
Fast Acquisitions off.
If Roll mode is on, math w aveforms and measurements are updated only after acquisition is stopped
(when you manually stop an acquisition). If you stop an acquisition before a record is filled, the math
waveform or measurements will be calculated on the partial data.
Roll mode is only valid for real-time acquisition modes such as Sample, Peak Detect, and Hi Res.
Roll mode is ignored in Average or Envelope acquisition modes.
Deskew values are ignored when Roll mode is on.
If you attempt to s ave a waveform w hen Roll mode is on, only the waveform points in the acquisition
memory are saved.
The maximum record lengthwhereRollmodeisallowedis10M.
IVI drivers
IVI drivers conform to specifications produced by the IVI Foundation.
Unlike VXI-plug&play drivers, IVI drivers provide a standard interface to different classes of instruments,
including oscilloscopes and spectrum analyzers.
IVI drivers have the ability to simulate instruments, automatically check ranges, and multithread safety
features.
Jitter 6 sigma
Jitter 6 sigma is six times the RMS value of the edge jitter in the current horizontal units.
Jitter 6 sigma = 6 × (JitterRMS)
Jitter peak-to-peak
Jitter p-p is the peak-to-peak value for the edge jitter in the current horizontal units.
Jitter PP = TCross1PP
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 845
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