Agilent Technologies Signal Analyzer N9030a - Manual (Page 1357)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Trace/Detector
Note that CISPR standard operation is to perform the envelope averaging 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.
Key Path Trace/Detector, Detector
Example DET:TRAC3 EAV Selects the EMI average detector for trace 3.
Dependencies Unavailable in manual FFT sweep.
Unavailable when Tune & Listen is turned on, or Demod Audio is the selected Analog Output:
Couplings If the user selects this detector on any active trace, the EMI Standard will be set to CISPR. If any
inactive trace with this detector selected goes active, the EMI Standard is set to CISPR.
If the Avg Type is in Auto, and this detector is selected on any active trace, the Voltage
Averaging type is auto-selected.
The VBW filter is not used for this detector, so varying the VBW will have no effect for any
traces for which this detector is selected (other than to slow down the sweep, because of the
coupling to Sweep Time of VBW). If any traces are active for which VBW does not apply (traces
with Average, EMI Average, RMS Average or Quasi Peak detectors), then an * displays after the
VBW annotation on the front panel.
Selecting a detector for a trace (pressing the key or sending a [:SENS]:DET:TRAC command) puts
Update On and DisplayOn for that trace, even if that detector was already selected. Note that
the legacy command [:SENS]:DET[:FUNC] does NOT exhibit this behavior.
Selecting a detector, whether by pressing the softkey or sending the equivalent SCPI command,
will turn trace math to Off for the selected/specified trace.
Initial S/W Revision A.02.00
RMS Average
Only appears with the N6141A or W6141A application or Option EMC installed and licensed.
This key selects the RMS Average detector, a frequency dependent RMS/Averaging filter, used in
making CISPR compliant EMI measurements. This filter conforms to the 2007 revision of the
CISPR 16–1–1 standard.
This detector does 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" similar to the
one used in the QPD filter.
Note that the user can manually set the Average Type to Log-Power or Power, but the results will
no longer be CISPR compliant.
Key Path Trace/Detector, Detector
Remote Language Compatibility Measurement Application Reference 1357