Save/Recall (Setups, Screens, Data)
20
Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
219
See Also
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"Minimum and Maximum Values in CSV Files"
Length Control
The
Length
control is available when saving data to CSV, ASCII XY, or BIN format
files. It sets the number of data points that will be output to the file. Only displayed
data points are saved.
The maximum number of data points depends on these things:
• Whether acquisitions are running. When stopped, data comes from the raw
acquisition record. When running, data comes from the smaller measurement
record.
• Whether the oscilloscope was stopped using
[Stop]
or
[Single]
. Running
acquisitions split memory to provide fast waveform update rates. Single
acquisitions use full memory.
• Whether only one channel of a pair is turned on. (Channels 1 and 2 are one pair,
channels 3 and 4 are the other.) Acquisition memory is divided among the
channels in a pair.
• On 2-channel oscilloscope models, whether the external trigger input channel
is on. The displayed external channel consumes acquisition memory.
• Whether reference waveforms are on. Displayed reference waveforms consume
acquisition memory.
• Whether segmented memory (available on DSOX1200-Series models) is on.
Acquisition memory is divided by the number of segments.
• The horizontal time/div (sweep speed) setting. At faster settings, fewer data
points appear on the display.
• When saving to a CSV format file, the maximum number of data points is
50,000.
When necessary, the Length control performs a "1 of n" decimation of the data .
For example: if the
Length
is set to 1000, and you are displaying a record that is
5000 data points in length, four of each five data points will be decimated,
creating an output file 1000 data points in length.
When saving waveform data, the save times depend on the chosen format:
