3 Spectrum Analyzer Mode
3.5 ACP Measurement
Marker Frequency
Sets the marker X-Axis value in the current marker X-Axis Scale unit. Has no effect if
the control mode is OFF, but is the SCPI equivalent of entering an X value if the
control mode is POSition or DELTa.
Remote Command
:CALCulate:ACPower:MARKer[1]|2|…|12:X <freq>
:CALCulate:ACPower:MARKer[1]|2|…|12:X?
Example
:CALC:ACP:MARK3:X 0
:CALC:ACP:MARK3:X?
Notes If no suffix is sent, uses the fundamental units for the current marker X-Axis Scale. If a suffix is sent
that does not match the current marker X-Axis Scale unit, an error “Invalid suffix” is generated
The query returns the marker’s absolute X Axis value if the control mode is POSition, or the offset
from the marker’s reference marker if the control mode is DELTa. The query is returned in the
fundamental units for the current marker X-Axis scale: Hz for Frequency and Inverse Time, seconds for
Period and Time
Dependencies Unavailable when "Meas Method" on page 970 is RBW
Preset After a preset, all markers are turned OFF, so the query returns Not A Number (NAN)
State Saved Saved in instrument state
Min/Max –/+9.9E+37
Annotation Mkr # <X value> and <Marker value> upper right on graph
Marker X Axis Position (Remote Command Only)
Sets the marker X-Axis Scale position in trace points. This setting has no effect if the
control mode is OFF, but is the SCPI equivalent of entering a value if the control
mode is POSition or DELTa, except in trace points rather than X-Axis Scale units.
The entered value is immediately translated into the current X-Axis Scale units for
setting the value of the marker.
Remote Command
:CALCulate:ACPower:MARKer[1]|2|…|12:X:POSition <real>
:CALCulate:ACPower:MARKer[1]|2|…|12:X:POSition?
Example
:CALC:ACP:MARK10:X:POS 0
:CALC:ACP:MARK10:X:POS?
Notes The query returns the marker’s absolute X-Axis value in trace points if the control mode is
POSition, or the offset from the marker’s reference marker in trace points if the control mode is
DELTa. The value is returned as a real number, not an integer, corresponding to the translation from
X-Axis Scale units to trace points. When a Marker is turned on, it is placed center of the screen on the
trace. Therefore, the default value depends on instrument condition. If the marker is OFF, the
response is Not A Number
Dependencies Unavailable when Meas Method is RBW
Preset After a preset, all markers are turned OFF, so the query returns Not A Number (NAN)
Spectrum Analyzer Mode User's &Programmer's Reference 961
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