While displaying a wider span, each pixel contains spectrum
information associated with a larger subrange. That is, several
samples may fall on one pixel. Which of the samples will be
represented by the pixel depends on the selected detector type.
The submenu includes[Trace 1 2 3 4 5], [Pos Peak], [Neg Peak],
[Normal], [Sample], [RMS Avg], [Voltage Avg], [Quasi-Peak].
Key points:
⚫ Selects an appropriate type according to the application in order
to ensure the accuracy of the measurement for your application.
⚫ When 【BW】bottom softkey→[EMI Filter]→[EMI Filter] is On,
[Quasi-Peak] is available.
Table 5-1 Detector type comparison
Positive peak detector ensures that no peak
signal is missed, which is useful for
measuring signals that are very close to the
base noise.
Negative peak detector is used in most
cases with the self-test of the spectrum
analyzer and is rarely used in the
measurement. It is able to restore the
modulation envelope of the AM signal well.
Display pos peak and neg peak alternately
when noise is detected, or it only display pos
peak.
Sampling detector is conducive to
measurement noise signal. Compared with
the standard detection method, it can
measure noise better.
RMS Average detector averages rms levels
to calculate the true average power. It is best
for measuring the power of complex signals.
Voltage Average detector averages the
linear voltage data of the envelope signal
measured during the bucket interval. It is
useful for observing rise and fall behavior of
AM or pulse-modulated signals.
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