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Acquiring Waveforms
CSA7000 Series, TDS7000 Series, & TDS6000 Series Instruments User Manual
3-27
Vertical
scale
Vertical
position
Horizontal
scale
Acquisition
system
Input
Acquisition
mode
Record
length
Roll mode (CSA7000 S eries & TDS7000 Series only) gives a strip chart
recorder-like display for low frequency signals. Roll mode lets you see acquired
data points without waiting for the acquisition of a complete waveform record.
For example, in normal acquisition mode, when the Horizontal Scale is 1 second
per division, 10 seconds are required to fill the waveform record. Without roll
mode you must wait 10 seconds to see that the position control is set wrong.
With roll mode you can start seeing results almost immediately.
The following table indicates which acquisition feature s and modes ar e incompatible
with other feature s or modes:
Control/Feature Incompatible with Explanation
Average Single shot acquisition Acquisitions continue until the
specified number of wave-
forms have been acquired and
averaged
Envelope Single shot acquisition Acquisitions continue until the
specified number of wave-
forms have been acquired for
the enveloped waveform
Roll Measurements Measurements are not
available until you stop
acquisitions