Scott, So do you solder or ground the shielded end at any point or just ground the drain wire only?
-Eric Scott Reed wrote: > From way back when I was an electrical engineering student, ground one > end. Or ground every 10 to 20 feet along the run. Otherwise you have > the potential for a ground loop, which means you have current running > through the shield and then through the tower. That can induce it's own > noise into the cable. > > Here is the key: Single Point Ground. > The idea is to do your best to keep everything at the same voltage > potential. So everything comes back to one place. > > So, while Jayson is right to a point about creating an antenna, the > solution is different than he suggests. You want to have the drain wire > do what it's name says, drain the stray signals to ground. For some > installations, using the metal connector on one end works. That is, > assuming that the board ground in directly connected to the single point > ground. My personal preference is to directly connect the drain wire to > the ground point, but the key is that you have one ground point and no > current flowing through the ground wires. > > Jayson Baker wrote: > >> If you don't ground both ends you're creating a huge "antenna" to pick up >> static and drain it right into your board/POE. >> Always use shielded connectors on both ends, and ground both ends. >> >> On Tue, Aug 4, 2009 at 7:26 AM, Scott Carullo >> <[email protected]>wrote: >> >> >> >>> While we are on the STP topic... It's been noted several times that you >>> are only supposed to ground ONE end of the STP shield otherwise you are >>> creating for yourself a ground potential difference. The idea behind the >>> shield is just that - shield noise away shunted to ground. On a typical >>> install lets cal this the radio side use plastic connector and inside use >>> grounded one with tall the other lightning goodies. What is the consensus >>> on this while we are on topic :) >>> >>> Scott Carullo >>> Brevard Wireless >>> 321-205-1100 x102 >>> >>> -------- Original Message -------- >>> -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
