Keysight E6680A - Advanced; Phase Noise Optimization

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
Only appears and is enabled when the External"IF Path" on page 376 is selected.
When pressed, several parameters are set to values necessary to make a proper
EDC measurement:
1.
Input = RF
2.
For N9041B Only: RF Input Port = RF2 (only RF port to support > 50 GHz)
3.
Ext IF Out ON (how the data gets to the external digitizer)
4.
Tune CF to (MinCF + MaxCF)/2
5.
Set Digital IF BW Auto/Man to Auto
6.
Set Span to Max Value
Notes EXT = Depends on the hardware
In cases where the path is not available but is selected from SCPI, error -241,”Hardware missing;
Option not installed” is generated
Dependencies The External path is visible (but grayed-out) only when Option EDC is installed
State Saved No
3.1.8.5 Advanced
Lets you control advanced functions of the measurement.
Does not appear in VXT.
Phase Noise Optimization
Selects the LO (local oscillator) phase noise behavior for various desired operating
conditions.
Remote Command For the meaning of each numeric option value, see "Parameter Options & Installed Options" on page
252 below
Complex Spectrum:
[:SENSe]:SPECtrum:FREQuency:SYNThesis[:STATe] 1 | … | 5
[:SENSe]:SPECtrum:FREQuency:SYNThesis[:STATe]?
Streaming:
[:SENSe]:STReaming:FREQuency:SYNThesis[:STATe] 1 | … | 5
[:SENSe]:STReaming:FREQuency:SYNThesis[:STATe]?
Example
:SPEC:FREQ:SYNT 2
Selects optimization for best wide offset phase noise
251 IQ Analyzer Mode User's &Programmer's Reference