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•  Make sure the maximum number of samples (MAX samples in Memory panel) is large enough. 
•  Select the desired time per division setting (timebase panel): the fastest sampling rate for the current 

digitizer, compatible with the maximum number of samples, will be selected and applied to all digitizers 
in the system. Any digitizer not capable to satisfy that sampling rate will run at its closest setting. 

Finally, note that the sampling rate menu (visible in Transient Recorder mode) contains the sampling rate capability 
of all digitizers currently in use. You must turn off the channels of 'slower' digitizers in order to view the highest 
sampling rates of the 'faster' digitizers. 

Segmented memory enables the sequential acquisition mode. This feature is particularly useful when capturing 
impulse-response type waveforms in a variety of applications. Segmented memory is available in all acquisition 
modes. However, it is generally used in either Normal or Single mode. Waveform display occurs only after all 
segments are filled. Segments can be displayed sequentially on the display or they can be overlaid on top of each 
other. To select an overlaid display, select the item Overlay Segments under the Options menu. Segmented data can 
be archived to any storage device on the computer in a similar way to non-segmented acquisitions. If the acquisition 
needs to be stopped before all segments are filled, press the Stop button. 

In order to set up the sequential acquisition mode, simply select more than 1 segment on the segment 
selection control under the Memory section of the control window and start the acquisition.  

A waveform zoom feature is available under the View menu of the 
display window. The screen image below shows the normal display 
and the zoom window that appears when zoom is selected. 

The zoom scale and center position are modified using the horizontal 
and vertical controls shown on the zoom display window. To the right 
side of the zoom window click on the “Horizontal” button, then 
modify the zoom expansion factor by clicking the “In” or “Out” 
buttons. 

The vertical blue cursor, or box, (depending on the zoom factor), 
shown on the main display window indicates the center point and 
range of the zoom. The vertical box or line can be dragged right or left 
with the mouse in order to re-position the center point of the 
waveform displayed in the zoom display window. Alternatively, the 
right and left arrows at the bottom of the zoom display window will 
reposition the horizontal center of the zoom. 

In order to expand the zoom region vertically, select the “Vertical” 
button on the zoom display and click the “In” / “Out” buttons. Alternatively, the up / down arrows on the scale 
indicator just below the vertical button can be used. When the vertical scale is expanded, the top and bottom lines 
forming the blue box in the main display window show the extent of the vertical zoom region. The vertical position 
of the box, and thus the data region shown on the zoom display, may be changed by moving the box vertically with 
the mouse or by clicking on the up and down arrows at the left of the zoom display window. 

When expanding a waveform to the point where individual data points are seen, it may be desirable to use the 
“Connect data points” option under the Options menu in AcqirisLive. When this option is selected, larger data points 
are drawn on the display and a line connects each point. 

The main display window contains a drop down selector that controls the display type for both the main display and 
the zoom window. There are two modes available, the Live Display, or the Persistence Display. When persistence 
display is selected, all points drawn to the display windows remain on while new points are added from subsequent 
acquisitions. This mode is particularly suited for examining the jitter on an edge of a periodic signal as shown in the