3 WLAN Mode
3.12 IQ Waveform Measurement
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?
-2.402406506109E+001
Case #2 - Trace IQ: returns a double array of two values, the first is I, and the second is Q
>:CALC:WAV:MARK1:Y?
-3.006944493834E-003,+9.9870666467354E-004
The IQ selection is for backwards compatibility purposes. For new designs, use the I and/or Q selection
instead
You must be in a Mode that includes the Waveform measurement to use this command. Use :INSTru-
ment:SELect to set the Mode
Preset Result depends on the marker setup and signal source
State Saved No
Backwards
Compatibility
SCPI
:CALCulate:WAVeform:MARKer[1]|2|…|12:FUNCtion:RESult?
1815 WLAN Mode User's &Programmer's Reference
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