3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
Notes The selected marker is remembered even when not in the Marker menu and is used if a search is done,
or if a Band Function is turned on, or for Signal Track or Continuous Peak
Preset Marker 1
State Saved The number of the selected marker is saved in instrument state
Annunciation Appears in the marker results block label for POSition, DELTa and Fixed markers
3.1.7.2 Settings
The controls on this tab include the Marker active function and a radio button
selection for "Marker Mode" on page 206 (POSition, DELTa, or OFF) for the
selected marker, as well as additional functions that help you use markers.
Marker Frequency
Lets you set 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
Complex Spectrum:
:CALCulate:SPECtrum:MARKer[1]|2|…|12:X <freq>
:CALCulate:SPECtrum:MARKer[1]|2|…|12:X?
Streaming:
:CALCulate:STReaming:MARKer[1]|2|…|12:X <freq>
:CALCulate:STReaming:MARKer[1]|2|…|12:X?
Example
:CALC:SPEC:MARK3:X 10kHz
:CALC:SPEC: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
Preset After a preset, all markers are turned OFF, so the query returns Not A Number (NAN)
State Saved Saved in instrument state
Min -9.9E+37
Max 9.9E+37
Annotation Mkr # <X value> and <Marker value> upper right on graph
IQ Analyzer Mode User's &Programmer's Reference 204
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