Ground bounce is where the ground potential moves. Usually it's a phrase used in high speed circuit design where the switching currents cause enough current to flow that the negative reference for a given part to be higher or lower than the rest of the circuit.
A fair number of people seem to use it in grounding where you see intermittent non zero voltages at a specific point in the grounding bus. Although now I think about it, this would normally make a surge suppressor less likely to trip. On Mar 31, 2015 11:26 AM, "Jaime Solorza" <[email protected]> wrote: > Ok. I just asked my two automation engineers to explain ground bounce. > They never the term. They assumed that voltage is getting injected or > introduced into line somewhere. Recommended voltmeter and checking wires > first > > Jaime Solorza > On Mar 31, 2015 11:14 AM, "Forrest Christian (List Account)" < > [email protected]> wrote: > >> Is this a higher RF site? >> >> I don't remember is the GIGE-APC high voltage? If this is a low voltage >> unit, you may be seeing some sort of ground bounce and/or RF triggering the >> surge supressor. >> >> On Tue, Mar 31, 2015 at 10:49 AM, Nate Burke <[email protected]> wrote: >> >>> I just changed out an ATOM mikrotik to a CCR, and found that it is >>> Incrementing FCS Errors exactly every 30 seconds on the Ethernet line from >>> a Trango LYNX. The lynx is powered via DC, so the Data line is clean of >>> POE. I am using a GIGE-APC Unit on the Ethernet line. >>> >>> What I found through testing, was that the FCS Errors only happened when >>> the GIGE-APC was plugged into the chassis. They happened at exact 30 >>> second intervals. Because of this I'm guessing that there is something >>> introduced via the ground that is causing them. If I pull the GIGE-APC out >>> of the Chassis, the errors stopped, if I plugged it back in, the errors >>> came back, at the exact same clock points (in my CCR Log, always at 06 and >>> 36 seconds regardless of the timing of plugging/unplugging). I'm using the >>> 1U APC chassis, and there are other GIGE-APC, 444APC-HV, and GIGE-POE-APC >>> units in it. None of the other equipment is plugged into the CCR, so unsure >>> if it would increment FCS Errors on those. They are all plugged into >>> RB1100's, and have no errors logged in the mikrotik. >>> >>> Any place to start troubleshooting something like this? Would it make >>> sense that something on the ground plane could cause these Ethernet errors? >>> >>> I believe that this is causing some very low level packetloss through >>> the link, about 1 packet every 5 minutes or so, I'm guessing based on if >>> the ping falls directly on the error frame. >>> >>> Nate >>> >>> >> >> >> -- >> *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* >> Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 >> [email protected] | http://www.packetflux.com >> <http://www.linkedin.com/in/fwchristian> >> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >> >>
