|
Hi Colin,
toggle quoted message
Show quoted text
Those 7CT1N captive leads are problematic. I've fixed several 7CT1Ns and they almost all had bad cables. By now most of insulation on the cables has gotten brittle and is cracking. The plug on the end gets banged around and twisted and/or bent which stresses the strands inside until they start breaking. I don't think the design engineers realized they would have a 50+ year useful life. Somewhere along the way I realized I was going to need those cables. I think I bought a bunch from Deane Kidd but it was so long ago that I can't recall where they came from for sure. Esmond's replacement cable is on the way to him. Dennis Tillman W7PF -----Original Message-----
From: Colin Herbert Sent: Wednesday, August 28, 2019 10:42 AM There appears to be two variants of this captive lead. The picture in my manual shows an in-line white plastic "plug", as does Tekwiki. It is given as p/n 195-0095-00 "Lead, test: BNC" and the manual also lists p/n 348-0301-00 "grommet: plastic, 0.312 ID x 0.43 inch OD" associated with the lead. However, my 7CT1N has a black lead with a double-ended connector forming a tee with the lead. One end mates with a BNC male, the other with a BNC female, but still only one connection, no shield. I might add that I purchased the 7CT1N from Dennis Tillman about a year ago. Colin. -----Original Message----- From: EJP Sent: 25 August 2019 07:21 The plug has finally broken off the captive lead on my 7CT1N, the one that goes out to a vertical amp or time-base depending on which side you have it installed. I'm sure I'm not the first victim of this. I can obviously replace it with an ordinary BNC plug, and am doing so temporarily (I hope), but it rattles around etc., and it also has a redundant earth connection. I'm wondering if there is something more suitable, short of the unobtainium (I presume) entire 195-0095-00 assembly, that is maybe made of plastic and/or only has the inner connecting ring. Thanks in advance EJP -- Dennis Tillman W7PF TekScopes Moderator |
