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

2015-03-31 Thread George Skorup (Cyber Broadcasting)
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 to non affected lines. Ground

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

[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

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

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 n...@blastcomm.com wrote: I just changed out an ATOM

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 n...@blastcomm.com wrote: This is not a High RF Site. Ham Operator and

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
...@gmail.com *Sent:* Tuesday, March 31, 2015 11:13 AM *To:* Animal Farm 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 to non affected lines. Ground isolation

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