I hate it when this happens, and other wiring weirdnesses

A case of PEBKAC (Problem Exists Between Keyboard and Chair)? Tell us about your war stories!
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w9wi
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I hate it when this happens, and other wiring weirdnesses

Post by w9wi » Thu Oct 18, 2012 10:42 pm

Would you believe it's possible to attach a BNC to a Belden 8723 2-pair audio?:
8723_BNC.jpg
I hate it when this happens:
CTL0115.jpg
--
Doug Smith W9WI
Pleasant View, TN EM66

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PID_Stop
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Re: I hate it when this happens, and other wiring weirdnesse

Post by PID_Stop » Fri Oct 19, 2012 10:50 am

w9wi wrote:Would you believe it's possible to attach a BNC to a Belden 8723 2-pair audio?:
Absolutely! I have to do that occasionally with 9451 -- some of our Leitch video equipment uses BNC connectors for serial data or remote control contact closures. It's easier and neater to terminate the Leitch end of a piece of 9451 with a BNC, than to terminate a piece of coax on a sub-D connector for the other end of the line.

For the duplicate wire marker... well, I've done that when sufficiently tired. At least you're dealing with obviously different cables, so it's easy to figure out which is which. It would be a real bummer if they were the same type of cable...

-- Jeff

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Re: I hate it when this happens, and other wiring weirdnesse

Post by w9wi » Fri Oct 19, 2012 12:24 pm

PID_Stop wrote:
w9wi wrote:Would you believe it's possible to attach a BNC to a Belden 8723 2-pair audio?:
Absolutely! I have to do that occasionally with 9451 -- some of our Leitch video equipment uses BNC connectors for serial data or remote control contact closures. It's easier and neater to terminate the Leitch end of a piece of 9451 with a BNC, than to terminate a piece of coax on a sub-D connector for the other end of the line.
I'm not at all sure I'd be able to get that anywhere near that neat. (the one in the photo was done by an engineer who retired five years ago)
For the duplicate wire marker... well, I've done that when sufficiently tired. At least you're dealing with obviously different cables, so it's easy to figure out which is which. It would be a real bummer if they were the same type of cable...
We've got a database that's supposed to prevent that -- but if someone doesn't bother to register a new cable in the DB.....

Problem is, I checked the database & found where CTL0115 is supposed to go -- found the little CTL0115 at one end -- and the big CTL0115 at the other end -- two racks apart, but *both* of them run off towards MCR about 30 feet away...

Luckily, all of this stuff is part of an obsolete system -- so I'm disassembling it, not trying to fix it!
--
Doug Smith W9WI
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Baylink
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Re: I hate it when this happens, and other wiring weirdnesse

Post by Baylink » Fri Oct 19, 2012 1:43 pm

I dunno... I once had this studio engineer at a Community Access program that was a real pain in my ass....

I took an orange extension cord, cut the male end off with about a foot of cable, crimped a BNC connector on it, and threw it in the spaghetti behind the rack, on the floor.

I understand his reaction was theatrical. :-)

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Re: I hate it when this happens, and other wiring weirdnesse

Post by radiowave911 » Mon Oct 22, 2012 4:18 pm

Baylink wrote:I took an orange extension cord, cut the male end off with about a foot of cable, crimped a BNC connector on it, and threw it in the spaghetti behind the rack, on the floor.
Link fo you: http://www.fiftythree.org/etherkiller/. Personally, I am fond of the 'powered hub' on this page.
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Re: I hate it when this happens, and other wiring weirdnesse

Post by ChuckG » Mon Oct 22, 2012 6:11 pm

radiowave911 wrote: Link fo you: http://www.fiftythree.org/etherkiller/. Personally, I am fond of the 'powered hub' on this page.

"Normal harddrives and cdroms want +5VDC and +12VDC. We give them 120 VAC. They like it. Ohhh, they like it."

hahaha. :lol:

Hey, oh wait....I have to fix that stuff. :shock:
<><><><><><><><><>
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radiowave911
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Re: I hate it when this happens, and other wiring weirdnesse

Post by radiowave911 » Mon Oct 22, 2012 6:59 pm

ChuckG wrote: Hey, oh wait....I have to fix that stuff. :shock:
Glad to help keep you in business :)

Of course, I have to fix the network side of things. Some of the stuff on that page would certainly create a lot of work for me as well.
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Re: I hate it when this happens, and other wiring weirdnesse

Post by PID_Stop » Wed Oct 24, 2012 8:50 am

w9wi wrote:We've got a database that's supposed to prevent that...
So do we, but the database can't prevent me from mistyping the wire number on the label. :oops:

It's not fair: getting older means I have all this great experience... but my eyes increasingly like to mistake 5's for 6's or 4's for 9's... and in a dark rack, the brown pair in the network cable looks too much like the orange pair. So while I can fix problems faster than ever, it feels like I create more problems than ever. :(

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Muadeeb
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Re: I hate it when this happens, and other wiring weirdnesse

Post by Muadeeb » Wed Oct 24, 2012 9:05 am

PID_Stop wrote:
w9wi wrote:Would you believe it's possible to attach a BNC to a Belden 8723 2-pair audio?:
Absolutely! I have to do that occasionally with 9451 -- some of our Leitch video equipment uses BNC connectors for serial data or remote control contact closures. It's easier and neater to terminate the Leitch end of a piece of 9451 with a BNC, than to terminate a piece of coax on a sub-D connector for the
A large console manufacturer is now putting logic connections on RJ-45 connectors. This makes it where you _have_ to break it out on a block of some sort unless you have all 6 lines going to one device.
Procrastination I can totally do. I'm good at it, I have a black belt in procrastination, it's an art form for me, I'm the absolute King of, well, I'll finish this thought la

awsherrill
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Re: I hate it when this happens, and other wiring weirdnesse

Post by awsherrill » Wed Oct 24, 2012 3:23 pm

and in a dark rack, the brown pair in the network cable looks too much like the orange pair.
I've got cable runs that go back decades, and in several cases the red wires have faded to some shade of brown. And yeah, the aging eyesight thing isn't helping either.

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RGORJANCE
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Re: the aging eyesight thing isn't helping either

Post by RGORJANCE » Wed Oct 24, 2012 4:42 pm

I can hardly see the wire anymore, much less the colors. I carry a jewelers loop, cheater reading glasses and a seeing eye assistant to help! :lol: :lol: :lol:

Don't feel bad - we still can make it to work! Now a days when I come home from work, instead of giving the wife a kiss and hug, I head straight for the
bottle --- ibuprofen that is. :roll:

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Deep Thought
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Re: the aging eyesight thing isn't helping either

Post by Deep Thought » Wed Oct 24, 2012 8:00 pm

RGORJANCE wrote:I can hardly see the wire anymore, much less the colors. I carry a jewelers loop, cheater reading glasses and a seeing eye assistant to help! :lol: :lol: :lol:
I am not ashamed of carrying three different strengths of reading glasses and have been known to wear more than one pair at a time to make out the numbers on small components... :shock: :mrgreen:
Mark Mueller • Mueller Broadcast Design • La Grange, IL • http://www.muellerbroadcastdesign.com

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Dale H. Cook
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Re: the aging eyesight thing isn't helping either

Post by Dale H. Cook » Thu Oct 25, 2012 4:52 am

Deep Thought wrote:I am not ashamed of carrying three different strengths of reading glasses ...
I used reading glasses for several years, but finally had to give them up and get a prescription because of astigmatism. I do keep a large magnifying slass in my laptop case and a small but strong LED flashlight on my belt to supplement the eyeglasses. :-)
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radiowave911
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Re: I hate it when this happens, and other wiring weirdnesse

Post by radiowave911 » Tue Nov 06, 2012 4:47 pm

PID_Stop wrote:and in a dark rack, the brown pair in the network cable looks too much like the orange pair.
I had fun once terminating network cables in a warehouse. The cable was plenum rated which, at the time, meant teflon insulation that was somewhat translucent. The colors were hard to make out in good light, I was in a warehouse lit by sodium vapor lights (I think that't what they were). It was a pink light. Very pink. Skewed colors something fierce, especially on cable that had precious little color to begin with.
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