Agilent Technologies 8566B Operating And Programming Manual page 254

KSF
Shift YTO
The KSF command is a diagnostic aid used for servicing the spectrum analyzer.
The KSF command removes the IF offset from the YIG-tuned oscillator so that the start frequency can be tuned
directly from the front panel.
F
The functions of the KSF command and the m [:';1 keys are identical.
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