Acquisition Control 13
Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide 229
When Realtime sampling is on, the bandwidth of the oscilloscope is limited
because the bandwidth of the reconstruction filter is set to fs/4. For example, a
MSOX410xA oscilloscope with channels 1 and 2 on has a bandwidth of 625 MHz
when Realtime sampling on and 1 GHz when Realtime sampling is off.
The sample rate is displayed in the sidebar Summary dialog.
Acquiring to 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 inactivity.
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 with Segmented Memory" on
page 231) to show infinite persistence across all acquired segments. See also “To
set or clear persistence" on page 157 for details.
To acquire to
segmented
memory
1 Set up a trigger condition. (See Chapter 11, “Triggers,” starting on page 169
for details.)
2 Press the [Acquire] key in the Waveform section of the front panel.
3 Press the Segmented softkey.
4 In the Segmented Memory Menu, press the Segmented softkey to enable
segmented memory acquisitions.
5 Press the #ofSegs softkey and turn 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 1000
segments, depending on the oscilloscope model.
6 Press the [Run] or [Single] key.
The oscilloscope runs and fills a memory segment for each trigger event. When
the oscilloscope is busy acquiring multiple segments, the progress is displayed on
screen. The oscilloscope continues to trigger until memory is filled, then the
oscilloscope stops.
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