244 Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
15 Measurements
To make automatic measurements
1 Press the [Meas] key to display the Measurement Menu.
2 Press the Add Meas softkey to open the Add Measurements Menu.
3 If the Parameter softkey is available, select the Source parameter.
The Parameter softkey is available when there are multiple settings for a
measurements.
4 Press the Source softkey to select the channel, running math function, or
reference waveform to be measured.
Only channels, math functions, or reference waveforms that are displayed are
available for measurements.
5 Press the Type: softkey; then, rotate the Entry knob to select a measurement to
be made.
Post Acquisition Processing
In addition to changing display parameters after the acquisition, you can perform all of the
measurements and math functions after the acquisition. Measurements and math functions
will be recalculated as you pan and zoom and turn channels on and off. As you zoom in and out
on a signal using the horizontal scale knob and vertical volts/division knob, you affect the
resolution of the display. Because measurements and math functions are performed on
displayed data, you affect the resolution of functions and measurements.
If a portion of the waveform required for a measurement is not displayed or does not display
enough resolution to make the measurement (approximately 4% of full scale), the result will
display "No Edges", "Clipped", "Low Signal" (not enough amplitude), "< value", or "> value",
or a similar message to indicate that the measurement may not be reliable.
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