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Measuring Waveforms
3–128
TDS 500C, TDS 600B, & TDS 700C User Manual
In tracking mode, you normally move both cursors in tandem using the general
purpose knob. The two cursors remain a fixed distance (time or voltage) from
each other. Press SELECT to temporarily suspend cursor tracking. You can then
use the general purpose knob to adjust the distance of the solid cursor relative to
the dashed cursor. A second push toggles the cursors back to tracking.
Tracking Mode
Only Selected Cursor Moves
Both Cursors Move
in Tandem
Independent Mode
Figure 3–62: Cursor Modes
The cursor readout shows the absolute location of the selected cursor and the
difference between the selected and non-selected cursor. The readouts differ
depending on the cursor type you select, H Bars, V Bars, or Paired.
H Bars. The value after D shows the voltage difference between the cursors. The
value after @ shows the voltage of the selected cursor relative to ground. (See
Figure 3–63.) With the video trigger option, you can also display the voltage in
IRE units.
V Bars. The value after D
shows the time (or frequency) difference between the
cursors. The value after @ shows the time (frequency) of the selected cursor
relative to the trigger point. With the video trigger option, you can also display
the line number.
TDS 500C and TDS 700C Models Only: In FastFrame mode, the @ shows the
time position of the selected cursor relative to the trigger point of the frame that
the selected cursor is in. The D shows the time difference between the two
cursors only if both cursors are in the same frame.
Cursor Readouts