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Intercom Shields

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PaulR

Joined: 13 Nov 2008
Posts: 22
Location: Alabama

Posted: Thu Jan 14, 2010 11:09 am Post subject: Intercom Shields

I'm working on wiring the 25 pin Dsub for a PSE intercom and trying to understand shields.  PSE wants all the headset and mic wires shielded which I've done and they are to only be connected together at the intercom end.  My question is, is it okay to stop these shields an inch or so before getting to the backshell on the DB25? Will this work okay and not introduce a bunch of noise?  I just can't see anyway to continue the shielding into the backshell and then back out to join the ground connector to run them all together.  I've made a 25 pin ground bus per Bob's directions.



Intercom is PM 3000



Thanks

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_________________
Paul Rose
N417PR
RV-9A

nuckolls.bob(at)aeroelect
Guest

Posted: Thu Jan 14, 2010 5:05 pm Post subject: Intercom Shields

At 01:09 PM 1/14/2010, you wrote:




I'm working on wiring the 25 pin Dsub for a PSE intercom and trying 

to understand shields.  PSE wants all the headset and mic wires 

shielded which I've done and they are to only be connected together 

at the intercom end.  My question is, is it okay to stop these 

shields an inch or so before getting to the backshell on the DB25? 

Will this work okay and not introduce a bunch of noise?



      You can stop them 5" with virtually zero risk of noise.



I just can't see anyway to continue the shielding into the backshell 

and then back out to join the ground connector to run them all 

together.  I've made a 25 pin ground bus per Bob's directions.



  See:



http://www.aeroelectric.com/articles/pigtail/pigtail.html



   Bob . . .

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PaulR

Joined: 13 Nov 2008
Posts: 22
Location: Alabama

Posted: Fri Jan 15, 2010 5:52 am Post subject: Re: Intercom Shields

Thanks Bob, I had already looked at the pigtail detail, but the connections didn't seem to be working that way.  As long as I can stop them just short of the housing for the connector, it will be fine.



Thanks

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_________________
Paul Rose
N417PR
RV-9A

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Jan 15, 2010 5:43 pm Post subject: Intercom Shields

At 07:52 AM 1/15/2010, you wrote:

 	  Quote: 	
		  



Thanks Bob, I had already looked at the pigtail detail, but the 

connections didn't seem to be working that way.  As long as I can 

stop them just short of the housing for the connector, it will be fine.


	


   Don't make them TOO short . . . or all the

   same distance outside the housing . Stagger

   'em so they don't make a big lump.



   Bob . . .

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