Agilent Technologies PSA Series User And Programming Manual page 80

Instrument Functions: A - L
Det/Demod
− displays the instantanewous level of the signal at the center of the
• EMI Average
bucket, just like the sample detector. Also changes the auto coupling of VBW, RBW and
Avg/VBW Type and the set of available RBWs. Used in making CISPR-compliant
measurements.
− the same as the Peak detector but uses CISPR related bandwidths.
• EMI Peak
− the same as the Peak detector but uses MIL related bandwidths.
• MIL Peak
Because they may not find the true peak of a spectral component, 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.
The detector in use is indicated on the left side of the display, just below Reference level.
The designators are:
Norm − Normal detector
•
Avg − Average detector
•
Peak − Peak detector
•
Samp − Sample detector
•
NPk − Negative Peak detector
•
EmiQP − Quasi Peak detector
•
EmiAv − Ε MI Average detector
•
EmiPk − Peak detector with CISPR bandwidths
•
MILPk − Peak detector with MIL bandwidths
•
If the detector has been manually selected, a # appears next to it.
RMS Detection
TIP
To measure the average power (RMS voltage) in each display point, set
to
Detector
Key Path:
Det/Demod
State Saved: Saved in Instrument State
Factory Preset: Normal, Auto Coupled
80
, and verify that
Average
is set to
Avg/VBW Type
(RMS).
Pwr Avg
Chapter 2