Keysight x-series Programmer's Reference

3 VMA Mode
3.1 Digital Demod Measurement
Notes Grayed-out unless the marker is fixed and on a vector display
If suffix is sent, it must match the Y units for the trace the marker is on. Otherwise, error -138, "Suffix
not allowed" is generated. If query is sent while the marker is on a trace whose format is not vector or
constellation, NaN (9.91E+37) is returned
Preset None until marker is turned on
State Saved Yes
Min/Max Depends on trace format / Depends on trace format
Marker Mode
There are four control modes for markers:
Mode Option Description
Normal
POSition
A marker that can be moved to any point on the X Axis by
specifying its X Axis value, and whose absolute Y Axis value is then
the value of the trace point at that X Axis value
Delta
DELTa
A marker that can be moved to any point on the X Axis by
specifying its X Axis offset from a reference marker, and whose
absolute Y Axis value is then the value of the trace point at that X
Axis value
Fixed
FIXed
A marker whose X Axis and Y Axis values may be directly or
indirectly specified by you, but whose Y Axis value remains fixed,
once specified, and does not follow the trace. Fixed markers are
useful as reference markers for Delta markers, as operands in a
Peak Search operation, and as arbitrary reference points settable
by you. These markers are represented on the display by an “X”
rather than a diamond
Off
OFF
A marker that is not in use
The SCPI command in the table below selects the marker and sets the marker
control mode as described under Normal, Delta, Fixed and Off, below. All
interactions and dependencies detailed under the control description are enforced
when the remote command is sent.
Remote
Command
:CALCulate:DDEMod:MARKer[1]|2|…|12:MODE POSition | DELTa | FIXed | OFF
:CALCulate:DDEMod:MARKer[1]|2|…|12:MODE?
Example
:CALC:DDEM:MARK2:MODE POS
:CALC:DDEM:MARK2:MODE?
Couplings The marker addressed by this command becomes the selected marker on the front panel
Preset OFF (all markers)
State Saved The marker control mode (Normal, Delta, Fixed, Off) and X Axis value are saved in instrument state
Range Normal|Delta|Fixed|Off
291 Vector Modulation Analyzer Mode User's &Programmer's Reference

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)