3 Short-Range Comms & IoT Mode
3.11 IQ Waveform Measurement
Marker X Axis Position (Remote Command Only)
Sets the marker X position in trace points. It has no effect if the control mode is OFF,
but is the SCPI equivalent of entering a value if the control mode is Normal or Delta.
The entered value is immediately translated into the current X Axis Scale units for
setting the value of the marker.
Remote
Command
:CALCulate:WAVeform:MARKer[1]|2|…|12:X:POSition <real>
:CALCulate:WAVeform:MARKer[1]|2|…|12:X:POSition?
Example
:CALC:WAV:MARK:X:POS 500
:CALC:WAV:MARK: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
Preset After a preset, all markers are turned OFF, so the query returns a Not A Number (NAN)
State Saved No
Min/Max -/+9.9E+37
Marker Y Axis Value (Remote Query Only)
Queries the marker Y-Axis result value in the current marker Y-Axis unit. The “result”
of a marker is the value that is displayed on the second line of the Marker Result
block. To properly interpret the returned value, you must also know how the
instrument’s Y-Axis Unit is set, as described below.
A marker can have up to two results, only one of which is displayed or returned in a
query, as follows:
–
Absolute Result: every marker has an Absolute Result. For POSition and DELTa
markers, the Y-axis value of the trace point the marker is currently on. The
Absolute Result is displayed in the result block or returned as a query, unless the
marker control mode is DELTa
–
Relative Result: if a marker’s control mode is DELTa, the relative result is
displayed in the result block or returned in a query. This is the ratio of the
Absolute Result of a delta marker to the Absolute Result of its reference marker.
The ratio is expressed in dB
Remote
Command
:CALCulate:WAVeform:MARKer[1]|2|…|12:Y?
Example
:CALC:WAV:MARK11:Y?
Notes When the marker is on, IQ waveform returns I and Q values
Case #1 - Trace RF, I or Q: returns a single double value
>:CALC:WAV:MARK1:Y?
1582 Short Range Comms & IoT Mode User's &Programmer's Reference