User`s guide

82 N9320A Spectrum Analyzer
4 Key Reference
When the detector is set to Auto, Pressing > Average (On)
changes the detector. The Auto choice will depend on marker
functions, trace functions, and the trace averaging function.
If a marker function or measurement is running, the Auto
choice of detector is either Average or Sample. When one of
the detectors (such as Average) is manually selected instead
of Auto, that detector is used without regard to other
analyzer settings.
• Average displays the power average in the bucket.
• Sample displays the instantaneous level of the signal at
the center of the bucket represented by each
display point.
• Positive Peak displays the max. of the signal in the bucket.
• Negative Peak displays
the min. of the signal in the bucket.
The detector in use is indicated on the left side of the
display. A “#” will appear next to it if the detector has been
manually selected.
Key access:
Auto Selects peak detection as the default. If a
different detection
scheme would be better
utilized for a particular measurement,
the
analyzer will use the alternate detection method.
Key access: > Detector Auto Man
Positive
Peak
Obtains
the maximum video signal between the
last display point and the present display
point
and stores this value in memory. It’s used
primarily when measuring sinusoidal
components. When Positive Peak is selected,
“Peak” appears in the upper- left corner.
Key access: > Detector Auto Man
Negative
Peak
Is a peak detector, but selects the minimum
video signal value. This detection should not be
used to measure the accurate amplitude. “NPk”
also appears in the upper- left corner, When
Negative Peak is selected.
Key access: > Detector Auto Man
BW/
Avg
Det/
Display
Det/
Display
Det/
Display
Det/
Display