3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
Every marker has another marker to which it is relative. This marker is referred to as
the “reference marker” for that marker. This attribute is set by Marker, Properties,
"Relative To" on page 335. 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:MARKer[1]|2|…|24:REFerence <integer>
:CALCulate:MARKer[1]|2|…|24:REFerence?
Example Set the marker 1 reference marker to 2, and turn marker 1 on as a Delta marker:
:CALC:MARK1:REF 2
Notes This command 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 number’s relative marker)
Couplings The act of specifying the selected marker’s reference marker makes the selected marker a Delta marker
If the reference marker is Off, it is turned on in Fixed or 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 it’s 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. This is 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
X Axis Scale
Determines how the X-Axis information for the selected marker is displayed in the
marker area (top-right of display) and the active function area of the display, and
how the marker is controlled. The available settings for the X Axis Scale are
Frequency, Period, Time, and Inverse Time.
Remote
Command
:CALCulate:MARKer[1]|2|…|24:X:READout FREQuency | TIME | ITIMe | PERiod
For option details, see "Options" on page 337
:CALCulate:MARKer[1]|2|…|24:X:READout?
Example Set the Marker 3 X Axis Scale to Time:
:CALC:MARK3:X:READ TIME
Notes If in Delta marker mode, the value used for X Axis Scale of both the marker and the reference marker
(for calculating the delta) is that of the marker, independent of what the reference marker is set to
This command causes the specified marker to become selected
336 Spectrum Analyzer Mode User's &Programmer's Reference
To Next Page
Loading...
Need help?
General
