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This format annotates the percent change in waveform values between the time marker position and the current cursor position on the selected channel. To display the percent change from TM point in the live display field:
In
the Options menu click on Select Live Display. This displays a
cascading pull-down menu containing the different data formats. Click
on % Change from TM pt.
Choose
Options Select Live Display (ALT,
O, V).
Press ENTER. This displays a cascading pull-down menu containing the different
data formats. Use the ↑ and ↓ cursor control keys to highlight
% Change from TM pt. Press ENTER.
When the percent change from time marker point format is selected, the live display field will show XXX.XX %CHANGE, where XXX.XX is the percent change in waveform values between time marker position and cursor position.
Note that a waveform must be selected and the time marker must be enabled for display in this format.
If the cursor is positioned directly on top of the time marker and compression is 1, the live display field shows zero (no change).
It is possible to see a negative percent change value in the live display field for this format. This occurs when the cursor is moved to a point on the waveform that is larger than the value of the waveform at the time marker.
If waveform compression is enabled, the data values reported by the time marker and cursor will be MID, MIN, MAX, or MxMn line segment values rather than a single data point value that would be displayed on an uncompressed waveform. Refer to Waveform Compression for more line segment value details.
