Tektronix 11801A Tutorial page 102

Example 6: Taking Delay Measurements Using Cursors
Using Split Dot Cursors
Dot cursors are small dots that "float" cn the trace. You position
them horizontally using the knobs, but their vertical height is
determined by the trace on which they are are placed.
Split dot cursors operate the same way, but they are placed on
two different traces of your choice. In this example, you will have
one trace on each of two graticules, but this is not required to
use split dot cursors. You will follow the convention of displaying
the traces before invoking the cursors.
(] Step 10: Establish a dual graticule display (press the
WAVEFORM button, and touch the Graticules and Create
Second Graticule selecicrs).
(_] Step 11: Press the SELECT CHANNEL button of the sam-
piling head channel to which you have connected the
INTERNAL CLOCK output.
[-] Step 12: If both traces are on a single graticule, move one
to the other graticule by touching either Lower Graticule or
Upper Graticule and Move Trace to Other Graticule.
You should now see a trace on each graticule. You will use spilt
dot cursors to measure the delay time between these traces.
(_] Step 13: Touch either trace on which you want to place 4
cursor, (in this case, since there are only two traces on the
display, this step is already done.)
[_] Step 14: Touch the Cursors icon and the Cursor Type
selector. Touch the Split Dots selector.