Agilent Technologies Signal Analyzer N9030a - Manual (Page 1350)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Trace/Detector
from the selected CISPR detector to an auto coupled detector according to the Auto Detector
rules in the Detector, Auto key description below.
4. The following ESA/E7400 detector commands are no longer accepted:
[:SENSe]:DETector[:FUNCtion]:EMI QPD|AVERage|OFF
[:SENSe]:POWer:QPGain[:STATe][:SENSe]:ARDT
Initial S/W Revision Prior to A.02.00
Modified at S/W
Revision A.02.00
More Information
The available detectors are:
•
The Sample detector indicates the instantaneous level of the signal at the center of the bucket
represented by each display point.
•
The Normal detector determines the peak of CW-like signals, and it yields alternating
maximums and minimums of noise-like signals. This is also referred to as Rosenfell detection.
•
The Average detector determines the average of the signal within the bucket. The averaging
method depends upon Average Type selection (voltage, power or log scales).
•
The Peak detector determines the maximum of the signal within the bucket.
•
The Negative Peak detector determines the minimum of the signal within the bucket.
•
The Quasi-Peak detector is a fast-rise, slow-fall detector used in making CISPR compliant EMI
measurements.
•
The EMI-Average detector provides a standard means to “smooth” the signal while still
providing compliance to CISPR pulse response standards. It displays the average value of the
amplitude envelope, rather than the average value of sample-detected amplitude, and uses an
advanced algorithm to realize a lowpass filter that conforms to the latest CISPR standard.
•
The RMS Average detector is a frequency dependent RMS or Averaging filter, used in making
CISPR compliant EMI measurements, which performs one averaging process (in the VBW
hardware) on the "power" (a.k.a. RMS) scale, and another process on the voltage scale using a
"meter movement simulator". This filter conforms to the 2007 revision of the CISPR 16–1–1
standard.
Because they may not find a spectral component's true peak, neither average nor sample detectors
measure amplitudes of CW signals as accurately as peak or normal, but they do measure noise
without the biases of peak detection.
1350 Remote Language Compatibility Measurement Application Reference