MDF cross connection block test clips
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Posted by Jgolan on July 29, 2005, 5:07 pm
Please log in for more thread options James, I think I have seen these blocks in a fashion that they have a blue and white checkerboard pattern for counting the pins. I don't recall if a "pair" of pins was one above the other, like a 66 type, or were side by side. In any case you should be able to make up a test cord using something like a Panduit Female disconnect lug. Try searching for this Panduit part number to see it: DNF18-187-C. These lugs are used typically for connecting wires to circuit boards or small batteries like in a security system. My only other suggestion is to contact the manufacturer of the block to see if they have something available. ------------------------------------- James Knott wrote: > Justin wrote:
>> hmmm...well the only thing I can think they would be are 66 blocks
>> or >> binding post (twist on) type. Those I'm not very familiar with >> other >> than knowing they exist. > These are fairly large blocks, with 100 pairs of punch down terminals
> on the > front and either wire wrap or connectors for the equipment cables on > the > back. You'll generally find them only in central offices, where high > pair > density is desired. On larger frames, they'll be arranged vertically > on > one side of the frame and horizonally on the other. Smaller frames > will > usually have only the vertical blocks on one side. When mounted on the > frame, they fit right next to one another. They also have a hinged > cover. > The cross connect wires come out of the side, and travel through rings > attached to the frame. The rings are installed on the back or > horizontal > side of the frame. ##-----------------------------------------------## Article posted with Cabling-Design.com Newsgroup Archive http://www.cabling-design.com/forums no-spam read and post WWW interface to your favorite newsgroup - comp.dcom.cabling - 2220 messages and counting! ##-----------------------------------------------## | ||||||||||||||||
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Posted by Dmitri(Cabling-Design.com on July 26, 2005, 5:01 am
Please log in for more thread options James Knott wrote: > Does anyone know of test clips for the 100 pair MDF type cross
> connection > blocks? I've seen some for type 66 blocks, but I'm not sure if they'd > be > suitable. Regular 110 or disconnect 110? Seriously doubt about regular, but for 110-type disconnects AT&T used to have test clip that you could plug into the same slot you took your disconnect divider from. The clips were single pair, but with a little bit of craftiness ;-) you could put 25 of them together. Just joking, you obviously test each pair separately 'cause it's hard to get any useable result for 25 pairs at once without a specialized circuit testing gizmo OTOH, they made single-pair and 25-pair disconnect blocks, so maybe somewhere in that Western Electric structure there could have existed such gizmo that tested 25 pairs at once. I'm still struggling to understand why you would need such test other than for initial post-installation backbone test. BTW, if you were looking for a regular 110-block clip, make sure you realize that you cannot plug anything OVER existing cross-connect wire (110 IDC allows only one connection), so you still can only test an empty block/cable that's not in service. -- Dmitri Abaimov, RCDD http://www.cabling-design.com Cabling Forum, color codes, pinouts and other useful resources for premises cabling users and pros http://www.cabling-design.com/homecabling Residential Cabling Guide ------------------------------------- ##-----------------------------------------------## Article posted with Cabling-Design.com Newsgroup Archive http://www.cabling-design.com/forums no-spam read and post WWW interface to your favorite newsgroup - comp.dcom.cabling - 2192 messages and counting! ##-----------------------------------------------## | ||||||||||||||||
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