Chapter 2 63
Instrument Functions: A - L
Auto Couple
Instrument Functions: A - L
Remote Command:
[:SENSe]:SWEep:FFT:SPAN:RATio <integer>
[:SENSe]:SWEep:FFT:SPAN:RATio?
Example: SWE:FFT:SPAN:RAT 20
2.2.3 PhNoise Opt
Selects the LO (local oscillator) phase noise behavior for various operating conditions. The
currently selected value is displayed below the £(f) indicator on the left side of the screen.
It is preceded by # if
Auto has been selected (#£(f)). The key labels indicate measurement
situations where a specific type of optimization is best.
Key Path:
Auto Couple
State Saved: Saved in instrument state
Factory Preset: Auto
Remote Command:
[:SENSe]:FREQuency:SYNThesis 1|2|3
1, selects optimization of phase noise for measuring signals with frequency offset
<50 kHz from the carrier.
2, selects optimization of phase noise for measuring signals with frequency offset
>50 kHz from the carrier.
3, selects optimization of LO phase noise for fast tuning (that is, faster measurements)
[:SENSe]:FREQuency:SYNThesis?
[:SENSe]:FREQuency:SYNThesis:AUTO OFF|ON|0|1
[:SENSe]:FREQuency:SYNThesis:AUTO?
Example: FREQ:SYNT:AUTO OFF
FREQ:SYNT 3, selects optimization for fast tuning
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