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
