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dataPAC User’s Guide
Chapter 3 - Collecting and Reviewing Data
Using Dual Cursors with Time Waveform
Model 1500 Only
The dual time cursors are useful for determining the time between two points on the time
waveform or the time of any given sample relative to the trigger point. The low cursor is on
the left, and the high cursor is on the right. Below is a diagram of a time waveform display
with dual cursors.
To move and switch active cursors
The highlighted cursor is considered active, and its value is displayed in the Cursor
Amplitude and the Cursor Position fields at the top of the display. Use the left and right
arrow keys to move the active cursor.
Press <F1> (Move Cursor (L/H)) to control which cursor is active. The softkey is labeled
Move Cursor (L) when the low cursor is active, and Move Cursor (H) when the high cursor
is active.
To calculate delta time/frequency
The Delta Amplitude at the top of the screen shows the amplitude difference between time
waveform samples at the high and low cursor positions. The Delta Time/Freq readout shows
the difference in time between the high and low cursors. The Delta Freq readout is one
divided by the time interval (the reciprocal). To see this display, you must have Delta
Frequency selected in the Time Waveform Options, or select More Info. See “Using Other
Features of the dataPAC Utility Program” on page 32 for more information.
To magnify the area between dual cursors
Press <F2> (Mag. Cursor) to horizontally magnify the display so that it only shows the area
between the low and high cursors. This function is also available with the Time - Show
Samples Between Cursors option on the Magnify menu. Press <SHIFT><F2> (Magnify) to
access the Amplitude - Fixed Scale (Time Cursor) menu option to set the fixed high and low
amplitude scale values to the amplitudes associated with the high and low cursors.
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