152 Keysight N9938-90003 User’s Guide
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
Figure 7-9 Detection using One Bucket
In the graphic above there is one bucket showing Positive peak, Sample, and
Negative peak Detection methods.
How to set Detection Method
The current Detection method is labeled on the left edge of the screen. When a
method is selected manually, a # precedes the label. For example: # Nrm
means that Normal was selected from the softkeys.
—Press Trace_6
—Then Detector
— Then choose from the following:
—Auto
Displays the most appropriate Detection method based on other
settings. [# is NOT shown]
—Normal
[#Nrm] Provides a better visual display of random noise than
Positive peak and avoids the missed-signal problem of the Sample
Mode. Should the signal both rise and fall within the bucket interval,
then the algorithm classifies the signal as noise. An odd-numbered
data point displays the maximum value encountered during its
bucket. An even-numbered data point displays the minimum value
encountered during its bucket. If the signal is NOT classified as noise
(does NOT rise and fall) then Normal is equivalent to Positive Peak.
—Positive Peak
[#Pk] Displays the maximum value of all the
measurements in each bucket. This setting ensures that no signal is
missed. However, it is not a good representation of the random noise
in each bucket.
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