Agilent Technologies EMC Series User Manual page 80

Front-Panel Key Reference
Det/Demod
Sample
Negative Peak
Accesses the Detector menu keys which allow you to select
EMI Detector
or
reference level and scale type after a Quasi-Peak or EMI Average
measurement. The
Quasi Peak
Key Access:
Quasi Peak
EMI Average
Off
80
Sample detection is used primarily to display noise or
noise-like signals. This detection should not be used to
make the most accurate amplitude measurement of non
noise-like signals. In sample mode, the instantaneous
signal value at the present display point is placed in
memory. When
appears in the upper-left corner of the display.
Key Access:
Negative peak detection functions the same as peak
detection, but selects the minimum video signal value.
This detection should not be used to make the most
accurate amplitude measurements of signals. When
Negative Peak
corner of the screen.
Key Access:
detection. It also allows you to restore settings for
EMI Average
QP/Avg xGain
or
EMI Average
Det/Demod
Enables quasi-peak detection which weights the
peak-detected amplitude using specific charge,
discharge, and meter time constants as described in
CISPR Publication 16. The effect of this detector
depends on the characteristics and repetition rate of
the input signal.
When the detector is selected, the analyzer is placed in
linear amplitude detection mode and the appropriate
detector is turned on. The system settings are
optimized to accurately measure the amplitude.
When quasi-peak is selected, QPeak appears in the
upper-left corner of the screen and quasi-peak is turned
on in the EMI Detector menu.
Key Access:
Turns EMI average detector On or Off. When the
detector is selected, the analyzer is placed in linear
amplitude detection mode and the appropriate detector
is turned on. The system settings are optimized to
accurately measure the amplitude.
Key Access:
Turns EMI detectors On or Off.
detection is selected, Samp
Sample
Det/Demod, Detector Auto Man
is selected, NPk appears in the upper-left
Det/Demod, Detector Auto Man
and keys are active when either
View
is selected.
,
Det/Demod EMI Detector
,
Det/Demod EMI Detector
Quasi-Peak
Chapter 2