Hello members, I've encountered a strange problem which I would like to share with you.
I'm working on a device with a build-in modem. It uses a AC/DC (220V to 5V) converter as powersupply. Somehow the modem does not work correctly and does not want to pick up the line. Connection with the processor seems to be OK, both timing and message content. The following strange thing happens: Only connecting the ground of a scope probe to the ground of the PCB makes the modem work. I suspect it to be a grounding problem, but don't have any clue how to solve this. The PCB has a full ground plane, so this must be good. Any ideas? Kind regards, Elbert. -- Author: Elbert Smit INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
