Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Jaime Solorza
Thanks! This list is like graduate school Jaime Solorza On Mar 31, 2015 4:43 PM, "Forrest Christian (List Account)" < li...@packetflux.com> wrote: > Ground bounce is where the ground potential moves. Usually it's a phrase > used in high speed circuit design where the switching currents cause

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread George Skorup (Cyber Broadcasting)
me Solorza <mailto:losguyswirel...@gmail.com> *Sent:* Tuesday, March 31, 2015 11:13 AM *To:* Animal Farm <mailto:af@afmug.com> *Subject:* Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC Bring out the Holy Hand ...oops bring out the voltmeter and see what you get. Compare

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Forrest Christian (List Account)
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

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Jaime Solorza
Tuesday, March 31, 2015 11:13 AM > *To:* Animal Farm > *Subject:* Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC > > > Bring out the Holy Hand ...oops bring out the voltmeter and see what you > get. Compare to non affected lines. Ground isolation is a science al

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread chuck
Seen this happen before. Has to be a potential between one of the ethernet lines and ground. Sometimes it is because someone used a LV version instead of a HV version. From: Jaime Solorza Sent: Tuesday, March 31, 2015 11:13 AM To: Animal Farm Subject: Re: [AFMUG] Ethernet Interference from

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Jaime Solorza
Start with DC before and after it. Keep it attached for a bit...then try AC as well. Make sure all cuts are clean and uniform. No need at add more antennas to the mix. Jaime Solorza On Mar 31, 2015 11:58 AM, "Nate Burke" wrote: > This is not a High RF Site. Ham Operator and a Helicopter Rel

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Nate Burke
This is not a High RF Site. Ham Operator and a Helicopter Relay for a TV Station (Not TV Transmitter) What Should I measure with the volt meter? From the APC Ground line to the building ground? On 3/31/2015 12:26 PM, Jaime Solorza wrote: Ok. I just asked my two automation engineers to exp

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Jaime Solorza
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)"

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Forrest Christian (List Account)
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 wrote: > I just changed out an ATOM mikrotik to a CCR, an

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Jaime Solorza
Bring out the Holy Hand ...oops bring out the voltmeter and see what you get. Compare to non affected lines. Ground isolation is a science all to itself Jaime Solorza On Mar 31, 2015 11:04 AM, "Sean Heskett" wrote: > if there is voltage on the ground then yes it will cause ethernet errors. > >

Re: [AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Sean Heskett
if there is voltage on the ground then yes it will cause ethernet errors. On Tue, Mar 31, 2015 at 10:49 AM, Nate Burke 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

[AFMUG] Ethernet Interference from Grounding using GIGE-APC

2015-03-31 Thread Nate Burke
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 tes