S331L UG PN: 10580-00321 Rev. M 3-37
Cable and Antenna Measurements 3-6 Measurement Setup
Markers
Markers can be applied to active or recalled measurements. The
instrument supports eight markers. Marker information is stored in
measurement and setup files and is displayed when either file type is
recalled. Pressing the Marker main menu key will bring up the marker
functions.
Overview of Markers:
• Frequency measurements (Return Loss, Cable Loss, and VSWR)
have common markers. Distance measurements (DTF Return
Loss and DTF VSWR) also have common markers.
• Press and hold on a marker to select and display the frequency/
distance and amplitude information, drag a marker to move it.
• The selected marker displays a red line and is the highlighted row
in the marker table. Select a marker to edit with the touchscreen
or the Select Marker button.
• Selected markers can be quickly dragged to a new location using
the touchscreen or moved by double-tapping on the display.
• Markers can be selected (and moved) outside of the Marker menu.
Press and hold on a marker (thin green line) for a few seconds to
make it active and ready for moving. After a few seconds the
instrument will automatically deselect the marker.
• Markers set beyond the current frequency or distance range are
displayed at either the left or right of the graticule.
• If the frequency (F1 or F2) or distance (D1 and D2) parameters
are moved inside a current marker location, the out range
(---> or <----) indicator is displayed and marker values in the
Table are blanked (--). See Figure 3-29 for an example of markers
beyond the current span.
• Markers beyond the current span cannot be edited.
• Marker locations and type are stored after the marker is turned
off.
• Marker Preset restores the markers to their default state. All
markers are turned off except for Marker 1 which is set to the
middle of the sweep. Previous marker information is not saved.
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