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Thread: Spinning Collet APC7 issue?


Permlink Replies: 4 - Pages: 1 - Last Post: Jul 30, 2012 8:31 AM Last Post By: dhamilton
SOLT_guy

Posts: 268
Registered: 05/30/09
Spinning Collet APC7 issue?
Posted: Jul 29, 2012 12:34 PM
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Dear Sir:

Can you tell me, in theory, if you make APC7 connections with a port connector that has a collet that spins (as opposed to a collet which does not move) how will this condition affect my measurements?

I look forward to reading your reply.
dhamilton

Posts: 136
Registered: 02/01/08
Re: Spinning Collet APC7 issue?
Posted: Jul 29, 2012 12:43 PM   in response to: SOLT_guy in response to: SOLT_guy
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The collet in an APC 7mm connector should be able to turn and should slightly protrude from the center housing by a few thousands of an inch. If you slightly press it, it should go flush and return to original position upon release. Also, under a magnifying glass it should have no damage to the measuring surface. If it does or is stuck in the center connector it should be replaced.

Yes, a defective collet will have effect on the quality of your measurements.
Dr_joel


Posts: 2,698
Registered: 12/01/05
Re: Spinning Collet APC7 issue?
Posted: Jul 29, 2012 1:03 PM   in response to: dhamilton in response to: dhamilton
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You might take a picture as I think you may be referring to the outter ring, not the inner center conductor collet. The outter ring should spin on one
SOLT_guy

Posts: 268
Registered: 05/30/09
Re: Spinning Collet APC7 issue?
Posted: Jul 29, 2012 9:22 PM   in response to: Dr_joel in response to: Dr_joel
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Dear Dr. Dunsmore and Mr. Hamilton;

Thank you very much for your informative replies, I really appreciate your feedback.

Dr. Dunsmore, you were about to write something in reference to the outer ring but you stopped writing abruptly, I am a little interested in what you had to say. If you have the time, can you elaborate on what you were about to say?

Again, thank you both for your replies.

Edited by: SOLT_guy on Jul 29, 2012 9:24 PM
dhamilton

Posts: 136
Registered: 02/01/08
Re: Spinning Collet APC7 issue?
Posted: Jul 30, 2012 8:31 AM   in response to: SOLT_guy in response to: SOLT_guy
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SOLTGuy,

What Dr. Joel was trying to explain is the threaded ring on the outside of the connector should move freely. By turning the outer nut in one direction you should be able to have the ring protrude from the measurement base. Turning the nut the other direction the ring should recess behind the measurement plane. The nut should move freely at all times. This was designed to allow the other connector which either has the ring protruding or not to mate. If you have another APC-7 connector you should see this work very smoothly.

If yours doesn't the connector needs replacement as the ring may be bent or threads damage. This would pass damage to another connector that is mated to it.

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