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#602982 08/09/16 01:03 PM
Joined: Oct 2006
Posts: 1,384
Likes: 6
Yoda Offline OP
OP Offline
Joined: Oct 2006
Posts: 1,384
Likes: 6
The Aux Ringer contacts are connected to a Bogen amp Nite Ringer connection. This has been working for years. Programmed for Night Service, Line 1 and 2 will ring over page horns.

The night ring thru page horns quite working. Testing shows two problems: 1-Aux Ring contacts don't show any short during ringing, as tested with continuity tester. 2-Shorting the Night Ring contacts manually on the amp does not produce any ring over page.

I changed the amp, and shorting the Night Ring contacts now makes sound over the horns. I recall that this same site had the same problem with the contact closure at the ksu on an earlier system years ago.

I've never had the contact closure be a problem anywhere else. Has anyone? Is there any fix for it? What would cause the ksu contacts and amp's night ringing to fail at the same time?


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Joined: Dec 2003
Posts: 2,086
Former Moderator-Nortel
Former Moderator-Nortel
Joined: Dec 2003
Posts: 2,086
Double check your programming. Probably not the problem but I try to always try the simple things first.

Yes I have seen the contacts not work before - It is rare.
One thing that wears them out is sending volts and/or amperage through the contacts. They are for dry contact only. I think they will take very small mil-amp but mostly none.

Since the amp went bad too, sounds like some kind of volt/amp may have zapped it. Only fix is to replace it.....at least that I know of.

Does the amp take a Tip&Ring input?
If yes, then you might get by with an ATA unit.
Make the ATA ring instead of the AUX. And take the output from the ATA into the T&R on the amp.

If CON is the opposite of PRO
Then what is the opposite of Progress?
Joined: May 2007
Posts: 426
Joined: May 2007
Posts: 426
Viking PA2A will work

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