Agilent Technologies Signal Analyzer N9030a - Manual (Page 670)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Marker
The entered value in Trace Points is immediately translated into the current X Axis Scale units for setting
the value of the marker. The marker’s value in X Axis Scale Units, NOT trace points, will be preserved if a
change is made to the X Axis scale settings. Thus, if you use this command to place a marker on bucket
500, which happens at that time to correspond to 13 GHz, and then you change the Start Frequency so
that bucket 500 is no longer 13 GHz, the marker will stay at 13 GHz, NOT at bucket 500! This is important
to realize as it differs from the behavior of past Agilent analyzers.
Remote Command :CALCulate:MARKer[1]|2|...12:X:POSition <real>
:CALCulate:MARKer[1]|2|...12:X:POSition?
Notes If the specified marker is Fixed and a Marker Function is on, a message is generated. If the key is
pressed, an advisory message is generated. If the equivalent SCPI command is sent, this same
message is generated as part of a “–221, Settings conflict” warning.
The query returns the marker’s absolute X Axis value in trace points if the control mode is
Normal or Fixed. It returns 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
Preset After a preset, if X is queried with no value sent first, the center of screen value will be returned.
So if per default, the number of Trace points is 1001, the center value will be 500.
Min 0
Max Number of trace points – 1
Default Unit unitless
Backwards
Compatibility SCPI :CALCulate:MARKer[1]|2|...4:X:POSition:CENTer
This alias is provided for compatibility with the Band Power function in PSA and ESA. See
details in the “Marker Function” section under
"Band Function Backwards Compatibility" on
page 731
Initial S/W Revision Prior to A.02.00
Setting/Querying the Marker Y Axis Value
The fundamental item of marker data accessed by users is the marker’s Y-Axis value. The query
below is used to select the marker and read the marker’s Y-Axis value.
In the command form, it selects the marker and sets the marker Y Axis value; the default unit is
the current Y Axis unit. The command form has no effect (other than selecting the marker) unless
the marker control mode is Fixed.
Remote Command :CALCulate:MARKer[1]|2|...12:Y <real>
670 Remote Language Compatibility Measurement Application Reference