Keysight x-series Programmer's Reference

3 VMA Mode
3.1 Digital Demod Measurement
Sync Persistence Target
Allows you to tune the algorithm for higher frequency lock range (0.0) or higher
constellation lock consistency (1.0). Values closer to 0.0 optimize towards higher
frequency lock range while values closer to 1 optimize towards higher constellation
lock consistency.
Remote
Command
[:SENSe]:DDEMod:SEGMent1|…|6:CONStln:PERSistence <real>
[:SENSe]:DDEMod:SEGMent1|…|6:CONStln:PERSistence?
Example
:DDEM:SEGM1:CONS:PERS 0.1
:DDEM:SEGM1:CONS:PERS?
Couplings If the modulation format is not Custom IQ, this control is grayed-out
Preset 0.05
State Saved Yes
Min 0.0
Max 1.0
Backwards
Compatibility
SCPI
:SERVice[:PRODuction]:DDEMod:CONStln:PERSistence
Phase Rotation
Sets an additional phase rotation to be applied to the defined constellation.
Remote
Command
[:SENSe]:DDEMod:SEGMent1|…|6:CIQ:PHASe:ROTation <real>
[:SENSe]:DDEMod:SEGMent1|…|6:CIQ:PHASe:ROTation?
Example
:DDEM:SEGM1:CIQ:PHAS:ROT 45
:DDEM:SEGM1:CIQ:PHAS:ROT?
Preset 0 deg
State Saved Yes
Min -360 deg
Max 360 deg
Shift
Enables or disables shift for phase rotation. When enabled, the phase rotation is
only applied to the odd symbol, for example pi/2 shift BPSK, pi/4 shift QPSK.
Remote
Command
[:SENSe]:DDEMod:SEGMent1|…|6:CIQ:PHASe:ROTation:SODD ON | OFF | 1 | 0
Vector Modulation Analyzer Mode User's &Programmer's Reference 356

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)