User`s guide

Key Reference 4
N9320A Spectrum Analyzer 79
When the detector sets to Auto, Pressing > Average (On)
changes the detector. The Auto choice depends 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
measurement arises where a different
detection
scheme would be better utilized, the
system will use the alternate scheme.
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 functions as peak detection, 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