B&K Precision 2640 - Manual - Manual (Page 40)

40
Marker
Center Marker is not a Mode the user will choose when using Mark Mode
in Basic operation. When inputting Start Frequency and Stop Frequency,
Center Frequency information will appear automatically.
The state is not indicated on the Mode ICON is Center Mode.
Frequency and Level on Center Frequency will be indicated on
Frequency Input Window.
Center
Marker