3 Spectrum Analyzer Mode
3.3 Channel Power Measurement
The control is duplicated here to allow you to conveniently perform a peak search
and change the marker’s control mode to Delta without having to access two
separate menus.
3.3.7.4 Properties
The controls on this tab are used to set certain properties of the selected marker.
Marker Frequency
This is the fundamental control that you use to move a marker around on the trace.
It is the same as "Marker Frequency" on page 634 in the Settings tab.
Relative To
Selects the marker to which the selected marker is relative (its reference marker).
Every marker has another marker to which it is relative. This marker is referred to as
the “reference marker” for that marker. The marker must be a Delta marker to make
this attribute relevant. If it is a Delta marker, the reference marker determines how
the marker is controlled and how its value is displayed. A marker cannot be relative
to itself.
Remote
Command
:CALCulate:CHPower:MARKer[1]|2|…|12:REFerence <integer>
:CALCulate:CHPower:MARKer[1]|2|…|12:REFerence?
Example
:CALC:CHP:MARK:REF 5
:CALC:CHP:MARK:REF?
Notes Causes the marker specified with the subopcode to become selected
Range (for SCPI command): 1 to 12. If the range is exceeded the value is clipped
A marker cannot be relative to itself so that choice is not available, and if sent from SCPI generates
error -221: “Settings conflict; marker cannot be relative to itself”
When queried a single value is returned (the specified marker numbers relative marker)
Couplings If the reference marker is Off, it is turned on in Normal mode at the delta marker location
Preset The preset default “Relative To” marker (reference marker) is the next higher numbered marker (current
marker +1). For example, if marker 2 is selected, then its default reference marker is marker 3. The
exception is marker 12, which has a default reference of marker 1
Set to the defaults by using Restore Mode Defaults. Not reset by Marker Off, All Markers Off, or Preset
State Saved Saved in instrument state. Not affected by Marker Off, and hence not affected by Preset or power cycle
Min 1
Max 12
Annunciation Appears in the marker label of a Delta marker
638 Spectrum Analyzer Mode User's &Programmer's Reference
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