Keysight E6680A - Page 252

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
Dependencies Does not appear in all models. The key is blank in those models, but the SCPI command is accepted
for compatibility (although no action is taken)
Preset Because this function is in Auto after preset, and because Span after preset > 314.16 kHz (see Auto
rules, next section) the state of this function after Preset will be 2
State Saved Yes
Range See "Ranges" on page 257 below
Min 1
Max 5
Auto Function
Remote
Command
Complex Spectrum:
[:SENSe]:SPECtrum:FREQuency:SYNThesis:AUTO[:STATe] OFF | ON | 0 | 1
[:SENSe]:SPECtrum:FREQuency:SYNThesis:AUTO[:STATe]?
Streaming:
[:SENSe]:STReaming:FREQuency:SYNThesis:AUTO[:STATe] OFF | ON | 0 | 1
[:SENSe]:STReaming:FREQuency:SYNThesis:AUTO[:STATe]?
Example
:SPEC:FREQ:SYNT:AUTO ON
Preset
ON
Parameter Options & Installed Options
The Phase Noise Optimization control lets you optimize the setup and behavior of
the Local Oscillator (LO) depending on your specific measurement conditions. You
may wish to trade off noise and speed, for example, to make a measurement faster
without regard to noise or with optimum noise characteristics without regard to
speed.
Parameter Values Summary
Option # Description
"Balanced" on
page 253
1
–
In instruments with EP0, balances close-in phase noise with spur
avoidance
–
In instruments without EP0 optimizes phase noise for small
frequency offsets from the carrier
"Best Wide-
offset" on page
254
2 Optimizes phase noise for wide frequency offsets from the carrier
"Fast Tuning"
on page 254
3 Optimizes LO for tuning speed
"Best Close-in"
on page 253
4 or 1*
–
In instruments with EP0, emphasizes close-in phase noise
performance without regard to spur avoidance
IQ Analyzer Mode User's &Programmer's Reference 252