RE: [SI-LIST] : LVDS signal observation

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From: Tom Dagostino ([email protected])
Date: Wed Feb 02 2000 - 10:38:52 PST


Be more concerned about the C loading of the probe than the input R. I'd
much rather use 150 fF of input C from a good 10X 500 ohm passive probe than
400 fF 100K Ohms from and active probe. 1 pF at 1 GHz is about 160 Ohms.

Tom Dagostino
ICX Modeling Group
[email protected]
503-685-1613

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Christopher wilson
Sent: Wednesday, February 02, 2000 10:06 AM
To: [email protected]
Subject: [SI-LIST] : LVDS signal observation

I need to buy a new oscilloscope and probes in part to
observe LVDS signals between devices (as opposed to
terminating at the scope). A FET probe seems to be
the least intrusive. Any suggestions for probe type
or specific scope/amp/probe recommendations? Anyone
looked at the new Tek CSA8000 for SI applications?

Thanks in advance,
Chris Wilson, Conexant Systems

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