3 WLAN Mode
3.8 Power vs Time Measurement
you press Delta again (when the selected marker is already in Delta mode) then the
reference is moved and modified as described above.
When a delta marker is changed to any other control mode, if its reference marker is
fixed then the reference marker is also turned off.
If you move a delta marker to a different trace, it is forced to Normal mode and if its
reference is fixed, the reference is turned off.
A delta marker is forced to Normal mode if you turn its reference off or if you move
its reference to another trace. (In the latter case the reference is not turned off even
if it is fixed.)
If you change the selected marker's reference (using the Marker, Properties,
Relative To), the selected marker is forced to Delta mode. This change of the
selected marker to Delta mode causes its new reference's control mode and
position to change as described above.
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. This attribute is set by the Marker,
Properties, Relative To key. 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:PVTime:MARKer[1]|2|...|12:REFerence <integer>
:CALCulate:PVTime:MARKer[1]|2|...|12:REFerence?
Example
:CALC:PVTime:MARK:REF 5
:CALC:PVTime:MARK:REF?
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 numbers 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 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.
WLAN Mode User's &Programmer's Reference 1384
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