Tektronix TBS2072, Руководство пользователя

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Acquisition setup
Maximum Zoomed waveform record captured with 2 million points
Using the roll display mode
Roll mode gives a display similar to a strip chart recorder, in that the waveform moves slowly, or rolls, from right to left on
the screen. Roll mode is used to display low-frequency signals. Roll mode lets you see acquired data points without
waiting for the acquisition of a complete waveform record.
Roll mode is not a button- or menu-selected mode, but is present when the trigger mode is Auto and the horizontal scale and
record lengths are set as follows:
Table 1: Roll mode is enabled when:
Horizontal scale setting Record length (number of samples)
40 ms/div 2000, 20k, 200k, 2M
400 ms/div 20M
Roll mode tips
Push Run/Stop to halt Roll mode.
Role mode is disabled under the following conditions:
When using Reference , Math , or FFT waveforms
Using the Zoom function
Taking measurements ( Measure menu)
Change to Normal trigger mode
Set the horizontal scale to 20 ms/division or faster (for 20M record lengths, it is 200 ms/division or faster)
Average acquisition mode is not available when you are using Roll mode
TBS2000 Series User Manual 45