Hi all,
Actually I was using a good ole Spectrim Analyser
so I sidestepped the windowing issue/software issues
altogether.
What I was(am)trying to do was match the max voltage
as measured on a scope with the value as measured
on a SA.
I first calibrated myslef using a known source - a sine
Charles Grasso wrote:
What I was(am)trying to do was match the max voltage
as measured on a scope with the value as measured
on a SA.
Try zero span on the SA. Compare THAT with the scope.
Cortland
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc
I presented a paper on that very subject about a decade ago at one of the
EMC TD magazine EMC symposia. I used a Fluke Scopemeter and some FFT
software that came with it. The Fluke interfaced to the PC through an
optically isolated RS-232 protocol. It worked quite well from a
pre-compliance or
Hi All,
Has anyone tried correlating the voltage ripple
as seen on a scope with the amplitudes measured
on a Spectrum Analyser?
I tried doing that the other day with ..umm. minimal
success. I think that due to the comples convoltions
that would have to occur when FFT'ing an irregular
voltage
List members,
What is the limitation on minimum pulse width in reverberation chambers? I
expect it relates to room size, but does anyone have either a functional
relation or a rough order of magnitude? Light travels 300 meters per
microsecond, so I would think a 1 microsecond pulse width would
You are making the same argument Mr. Woodgate did, but adding another
mechanism for creating the rf emission. Note that I did not offer an
explanation of the source of an rf emission, I simply postulated its
existence. Then I stated my point of departure from Mr. Woodgate's
analysis, which was
I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote
(in bb480cc1.366c%ken.ja...@emccompliance.com) about 'self blinking
LEDs as EMI sources WAS: LED lamps' on Sat, 26 Jul 2003:
I agree with most of Mr. Woodgate's commentary, but I wonder if the
presence of even an rf emission
Ken Javor wrote:
... but I wonder if the presence of even an rf emission (as contrasted
to 50 Hz) should cause any problem to a land-line phone with a wired
handset. It wouldn't seem likely that the
power available from a couple AA batteries would be sufficient for that.
Now if it were a
I agree with most of Mr. Woodgate's commentary, but I wonder if the presence
of even an rf emission (as contrasted to 50 Hz) should cause any problem to
a land-line phone with a wired handset. It wouldn't seem likely that the
power available from a couple AA batteries would be sufficient for
I read in !emc-pstc that Wan Juang Foo f...@np.edu.sg wrote (in
of7340f59a.f0a87124-on48256d6f.000df921-48256d6f.0013d...@np.edu.sg)
about 'self blinking LEDs as EMI sources WAS: LED lamps' on Sat, 26 Jul
2003:
These circuits
were found to (well at any rate, seems to) emit interference that
Dear All,
I observe recently that some self blinking (and color changing) LEDs 'are'
what seem to be a substantial emitters of radiated emission/interference.
These LEDs are rigged up by hobbyists as decorative illuminators and acts
more or less like the blinking lights for Christmas trees. I
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