Keysight N9927-90001 User’s Guide 167
SA (Spectrum Analyzer) Mode
SA Mode Settings
How to set Sweep Type
—Press BW 2.
—Then Advanced
—Then Sweep Type
— Then choose from the following:
—Auto
The FieldFox selects the most efficient sweep type based on the
Res BW. When Res BW is set to 200 kHz and below, FFT sweep type
is selected. Above 200 kHz, Step sweep type is being performed.
—FFT
The FieldFox uses FFT sweep type regardless of the Res BW.
—Step
The FieldFox uses Step sweep type regardless of the Res BW.
This is useful for capturing impulsive noise that may be generated
from nearby electrical equipment.
IF Output
The FieldFox IF (intermediate frequency) can be output for external signal
processing. The signal is available from the IF Out connector on the FieldFox
right-side panel. See the connector in “Right Side Panel” on page 38.
The IF Out signal, centered at approximately 33.75 MHz, is simply a
down-converted version of the RF Input signal that is present at the tuned
frequency.
While outputting an IF signal, the FieldFox stops performing the InstAlign
process. Therefore, the amplitude of traces on the FieldFox screen is NOT
accurate and Meas UNCAL appears on the screen to indicate this. Learn more
in “Individual Alignments” on page 184.
Learn more about the IF Output frequencies and bandwidths in the
Supplemental Online Help:
http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm
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