atcomsystems.ca/forum Forums General General Telephone & Systems Information Butt set tutorial

Thanks all -

I'm learning more and more. Sam - no rush on the basement - I'll play around with it; listening to different voltages, and the other things outlined in this thread. Appreciate all the feedback - !

- Matt

With any butt-set you can also check for blown fuses(1a2...) just put the leads on both sides of the fuse, If you hear talk-battery, You got a Blown fuse.

Matt might be a little confused by that. It will work, unless the fuse is not a talk battery fuse.

The accepted method is to put one side of the butt sett on GRD and then alternately touch the supply side and the drop side of each fuse until you hear a difference.

When testing GRD fuses, such as on a 584C panel, the butt set clip must be on a known BAT supply, and then the method is the same as above.

Yea even in the days of two pary service you could use the old "dumb bell" to test which party was on which lugs in the terminal.

Polarity is an issue with analog DID circuits, but not much else these days. However, my contribution to "Butt-Set 101" may come in handy one day:

To test polarity, place the set's black clip on on Tip (+) and the red one on Ring (mnemonic hint Ring = Red). The polarity LED will glow green if the circuit is wired correctly, red if it is reversed.

Matt -

I emailed you with a dozen scanned pages from an old manual on troubleshooting. There's a lot of references to using a butt set. let me know if it helps.

If anybody else is interested, let me know. It's from the Troubleshooting section of Lee's ABC of the Telephone, Volume 3 (Station I&R) 1976 edition, though this section is copied verbatim from a much earlier edition.

Sam

Thanks Sam, All!

Reviewing now....

= Matt

Polarity still counts on GS circuits too. In the old days when polarity had to be right we just put one side of the butt set to ground and see which side drew DT. Didn't need no stinken lights. Of course if everyone did what they were suppose to it was on the right. To expand on what dagwood said. Red, ridge, right, ring.

To expand on what Bill said for you yunggin's:
1)the "ridge" was on the outer sheath of the 1 pair drop wire.

2) Bell foremen used to follow their techs around and if they found that the job wasn't done right, you had to go back. To the point, they'd open every jack, connecting block, etc. & if the "red" wasn't on the right, you'd have to go back.

Post moved to another forum.

- Matt