A method of detection
that sums power across a frequency interval.
It is often used for measuring complex,
digitally modulated signals and other types
of signals with noise-like characteristics.
Modern Agilent spectrum analyzers typically
offer three types of average detection:
power (rms) averaging, which measures the
true average power over a bucket interval;
voltage averaging, which measures the
average voltage data over a bucket interval;
and log-power (video) averaging, which
measures the logarithmic amplitude in dB
of the envelope of the signal during the
bucket interval