Is there anybody out there you can survive with simulation or with
measurement only ?
I think in today's environment this is not possible any more.
For simulation you need to have measurements to ensure you are still on
the right track.
For measurements it is not possible any more to measure where you want
to see the signal. Even if in this case the scope does some
"simulations" it is critical to understand simulations and to generate
models.
So understanding measurement including the accuracy/errors here and also
understanding simulations including all drawbacks/errors that comes with
this one is essential for any high speed digital work.
Hermann
EKH - EyeKnowHow
Signal Quality - Made in Bavaria
Hermann Ruckerbauer
www.EyeKnowHow.de
Hermann.Ruckerbauer@xxxxxxxxxxxxx
Itzlinger Strasse 21a
94469 Deggendorf
Tel.: +49 (0)991 / 29 69 29 05
Mobile: +49 (0)176 / 787 787 77
Fax: +49 (0)3212 / 121 9008
Am 06.05.2016 um 00:19 schrieb Lyndell Asbenson:
A silly question? Yes to those whose life revolves around simulations, but to
those who work with equipment, this is a very critical question. I was
fortunate to have a on sight standards lab who gave me an invaluable
education about NIST Tractability and I have taken an MIT course on
Measurement. I had an ATE tester that we calibrated using a 3ns transmission
line. This transmission like was validated by NIST each year.
Regards,
Lyndell Lee Asbenson
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of heidi_barnes@xxxxxxxxxxxx
Sent: Friday, April 29, 2016 1:54 PM
To: billh@xxxxxxxxxxxxx; long.0.yang@xxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: A silly question about accuracy of oscilliscope
At Keysight we use NIST traceable standards to calibrate the instruments :).
NIST has a few ways to measure femto-seconds and claims they can go down to
10 femto-seconds.
http://tf.nist.gov/phase/
-Heidi
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Bill Hargin (Nan Ya, USA)
Sent: Friday, April 29, 2016 10:55 AM
To: long.0.yang@xxxxxxxxx; 'SI LIST' <si-list@xxxxxxxxxxxxx>
Subject: [SI-LIST] Re: A silly question about accuracy of oscilliscope
I gauge it by gut feel.
Bill Hargin
Director of North American Sales and Marketing Nan Ya Copper-Clad Laminates
billh@xxxxxxxxxxxxx ⪠425-301-4425 ⪠Skype: bill.hargin
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Long Yang
Sent: Friday, April 29, 2016 9:58 AM
To: SI LIST
Subject: [SI-LIST] A silly question about accuracy of oscilliscope
Dear all
This is absolutely a silly question but I just want to dive in depth.
Some oscilloscope vendors claim the accuracy of their instruments can be as
small as about dozens of femtosecond.
My question is how to gauge so small accuracy? What kind of instrument can be
used to measure these fs-level oscilloscopes?
thanks
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