Diff for "Electronics/AG4395A"

Differences between revisions 2 and 5 (spanning 3 versions)

Agilent Spectrum Analyzer AG4395a

Documents

Noise Spectrum Data

The display of the SA can't show the square root symbol, but still in Noise format the units are to intended as [unit]/rtHz
Noise spectrum data as download with the GPIB interface. The downloaded data always refers to power spectrum - and not spectral density - independently from what the display is showing. to convert to spectral density, one has to divide by the bandwidth BW. (The BW can be found written inside the .par file produced by the netgpibdata.py downloading script).
The instrument is able to output data in different format: RAW, as it appears on the display (i.e. through the GPIB command OUTPSWPRM?), or postprocessed (error corrected as the Programmin Manual calls it), that is corrected for some internal calibration parameters (i.e. through the GPIB function OUTPDATA?). So far, Yoichi's netgpibdata package provides data in the error-corrected form. That's the cause of the little discrepancy between display and downloaded data.

-  ⇤ ← Revision 2 as of 2010-04-06 15:46:05 → 
  Size: 701
  Editor: AlbertoStochino
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+   ← Revision 5 as of 2010-04-06 18:32:24 → ⇥
  Size: 1261
  Editor: AlbertoStochino
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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- * [attachment:AgilentSAbasics.pdf Agilent - Spectrum Analyzer Basics]
+ * [attachment:AG4395aProgramminguide.pdf AG4395a Programming Guide]
 * [attachment:AgilentSAbasics.pdf Agilent - Spectrum Analysis Basics]
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+ * The instrument is able to output data in different format: RAW, as it appears on the display (i.e. through the GPIB command ''OUTPSWPRM?''), or ''postprocessed'' (''error corrected'' as the Programmin Manual calls it), that is corrected for some internal calibration parameters (i.e. through the GPIB function ''OUTPDATA?''). So far, Yoichi's netgpibdata package provides data in the error-corrected form. That's the cause of the little discrepancy between display and downloaded data.