Bird Technologies SA-6000EX - Manual (Page 54)

Bird Technologies
38
Using Delta Markers
In the delta marker mode, only active markers will be visible. The
delta marker feature displays the difference (delta) in both frequency
and value between the selected marker and each of the other active
marker. If the limit line is active, you will also see the difference
between the selected marker and the limit line. The frequency differ-
ence between the selected marker and the limit line will always be the
frequency at the marker. All markers follow the current trace only.
Note: The delta marker feature compares points only on
one trace, and you must have at least two active markers for the
delta option to work.
To select and use delta markers, follow the numbered steps in
Figure 14 on page 38.
Figure 14 Delta Markers
Step Action
1 Press the Marker key to enter marker
setup
2 Press the Mark softkey to select an active
marker (1-6)
3 Press the Delta softkey to cycle through
the active markers and limit line (if active)
4 Press Esc to return to the test screen