HP 54620A User's And Service Manual page 91

Making Analyzer Measurements
Ways to measure data
Figure 23 shows the cursors used to measure the period of an irregular
waveform on channel 4; the period can be read from the ∆t display in the
measurement field as 28.50 µs.
Figure 23
Cursor t1
Cursor t2
Measuring the Period of an Irregular Waveform
90
Set which cursor is
controlled by the
Entry knob—press
both to move cursors
simultaneously
Choose the form of
readout of cursor
position
Turn off
cursors on
the display
(the menu
remains)