User`s guide

Acquisition Modes 8
InfiniiVision Oscilloscopes User’s Guide 271
Segmented Memory
You can purchase the oscilloscope with the segmented memory option factory-installed
(Option SGM) or you can easily install it yourself (order model number N5454A
“Segmented Memory”).
When capturing multiple infrequent trigger events it is advantageous to divide the
oscilloscope’s memory into segments. This lets you capture signal activity without
capturing long periods of signal “dead time.”
Each segment is complete with all analog channel, digital channel (on MSO models), and
serial decode data.
When using Segmented memory, use the Analyze Segments feature (see
“Measurements, statistics, and infinite persistence” on page 273) to show infinite
persistence across all acquired segments. See also “Infinite Persistence” on page 182
for details.
Using segmented memory
1 Set up a trigger condition. (See “Triggering” on page 81 for details.)
2 Press the [Acquire] key in the Waveform section of the front panel.
3 Press the Segmented softkey to access the Segmented Memory Menu.
4 In the Segmented Memory Menu, press the Segmented softkey to enable segmented
memory acquisitions.
5 Press the #ofSegs softkey and rotate the Entry knob to select the number of
segments into which you would like to divide the oscilloscope’s memory. Memory can
be divided into as few as two segments and as many as 2000 segments.
6 Press the [Run] key or the [Single] key.
The oscilloscope will run and fill a memory segment for each trigger event. When the
oscilloscope is busy acquiring multiple segments, the progress is displayed in the upper
right area of the display. The oscilloscope will continue to trigger until memory is filled,
then the oscilloscope will stop.