169
Key Reference
Trace/Det
Average Number
On Off
Initiates a digital averaging routine that averages the trace points
in a number of successive sweeps resulting in trace “smoothing”.
The number of sweeps (average number) is changeable when
setting
Average (Off)
. Increasing the average number will further
smooth the trace. pressing
BW > Avg Type
to select
the type of
averaging.
Average
measures the average value of the amplitude across
each trace interval (bucket). When
Average
is
selected, “
Avg
” appears on the left corner.
Sample
Sample detection is used primarily to display noise or
noise-like signals. It should not be used to measure
the accurate amplitude of non noise-like signals. In
sample mode, the instantaneous signal value of the
present display point is placed in memory. When
Sample
detection is selected, “
Samp
” appears in the
upper-left corner of the display.
Normal
Selects the maximum and minimum video signal
values alternately. When selecting
Normal
detection,
“
Norm
” appears in the upper-left corner.
QuasiPeak
Quasi-peak detection displays a weighted,
sample-detected amplitude using specific, charge,
discharge, and meter time constants derived from
the legacy behaviors of analog detectors and meters.
It is used for EMI measurements to provide a specific
and consistent response to EMI-like signals.
Note that CISPR standard operation is to perform the
averaging associated with quasi peak detection on
the voltage scale. You can manually set the
Average
Type
to
Log-Power
or
Power
, but the results will no
longer be CISPR compliant.
The QuasiPeak detector is only available in
Sweep
mode. If the current sweep mode is
FFT
, once the
QuasiPeak detector is selected, the sweep mode will
be forced into
Sweep
.
The minimum RBW for QuasiPeak detector is 1 kHz.
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Страница 110: ...Functions and Measurements Files Operation 102 ...
Страница 180: ...Key Reference Trace Det 172 ...
Страница 212: ...Menu Maps Name Editor Menu 204 Name Editor Menu ABCDEFG HIJKLMN Return OPQRSTU VWXYZ Name ...
Страница 214: ...Menu Maps SPAN Menu 206 SPAN Menu Span Span Full Span Zero Span Last Span ...
Страница 216: ...Menu Maps Trace Det Menu 208 ...
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