Keysight x-series Programmer's Reference

3 VMA Mode
3.1 Digital Demod Measurement
–
Auto: move the spur completely out of analysis bandwidth. The tradeoff is that
the available analysis bandwidth will be reduced to 400 MHz and EVM could be
worse as the edge of the passband is used for analysis
–
Manual: move the spur by a specified value, or turn off this feature by setting the
value to 0
Remote
Command
[:SENSe]:DDEMod:SAVoid:FREQuency <freq >
[:SENSe]:DDEMod:SAVoid:FREQuency?
[:SENSe]:DDEMod:SAVoid:AUTO ON | OFF | 1 | 0
[:SENSe]:DDEMod:SAVoid:AUTO?
Example
:DDEM:SAV:FREQ 50MHz
:DDEM:SAV:FREQ?
:DDEM:SAV:AUTO ON
:DDEM:SAV:AUTO?
Couplings Grayed-out when Mixer Mode is Alternate
When Acquisition mode is changed from Sequential to Simultaneous, this control is reset (manual, 0
Hz) for all component carriers
Preset 0 Hz
OFF
State Saved Saved in instrument state
Yes
Range Auto|Manual
Min -(1GHz – BW)/2
Max (1GHz – BW)/2
LO Dither
When LO Dither is turned on, the local oscillator frequency is rapidly changed by
small, random amounts. This helps spread the power of spurious signals within the
passband, which lowers their level, thus increasing dynamic range. This is only
required in very wide passbands, so this feature only appears with option H1G.
Remote Command
[:SENSe]:DDEMod:LO:DITHer[:STATe] ON | OFF | 1 | 0
[:SENSe]:DDEMod:LO:DITHer[:STATe]?
Example
:DDEM:LO:DITH 1
:DDEM:LO:DITH?
Dependencies Only available when the instrument has Option H1G installed. If you try to turn ON LO Dither in any
other case, an error message is generated, -241,"Hardware missing; Option H1G required"
Only appears in some Modes ( for example, 5GNR, VMA and IQ Analyzer)
Vector Modulation Analyzer Mode User's &Programmer's Reference 364

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)