[SI-LIST] Re: Ground problems
- From: stephanie.goedecke@xxxxxxxxxxx
- To: raman@xxxxxxxxxxxxx
- Date: Wed, 28 May 2003 09:23:00 +0200
Hi Ramana,
I think it might not be a 0 Ohm resistor. Would you consider replacing it with
a wire, and repeating the measurement?
regards,
Stephanie
Stephanie Goedecke
Philips - SP3D Chip Design GmbH
Petersbrunnerstr.17
82319 Starnberg / Germany
Phone: +49-8151-270-160
Fax : +49-8151-270-200
To:
<si-list@xxxxxxxxxxxxx>
cc: (bcc: Stephanie
Goedecke/STN/SC/PHILIPS)
Subject: [SI-LIST] Ground
problems
"Ramana Rao Rayudu" Classification:
<raman@xxxxxxxxxxxxx>
Sent by:
si-list-bounce@freelists
.org
2003-05-27 01:45 PM
Please respond to raman
Hello,
We are testing the power supply (VRM 8.5 compatible) for our processor
board.
We have a split ground - the power supply ground and the digital ground
shorted at one single point with a 0 ohm resistor. There is no signals
crossing over and I do not think there are any loops.
The voltage difference between the 2 grounds is very large. The CRO shows
a p-p of 2V when measuring between the 0 ohm resistor.
What could be the reason for this and what could the remedies.
Thanks and Regards
Ramana Rao Rayudu
Real Time Systems Group
Centre For Development Of Advanced Computing
No.1 Old Madras Road, Byappanahalli
Bangalore - 38, India
Ph 91-80-5244059
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