User Manual

Acquisition set

Maximum Zoo

med waveform record cap tured with 2 million points

Using the r

oll 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 s ee 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,orFFT 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 w hen you are using Roll mode

TBS2000 Series User Manual 45