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In Reply to: RE: Why?I woudln't pay posted by fmak on February 18, 2014 at 01:51:26:
Fred,
> using short leads and keeping the correct cable separation in line
> with pin separation.
This is unlikely to result in anything remotely close to 75 Ohm. Eye-balling I'd say > 200R.
If there is to be any improvement I suggest Thom better get a bulkhead socket with attached Coax Tail.
Otherwise while fitting the "correct" socket Thom will create greater impedance mismatches and worse reflections than he has by keeping the RCA socket.
That said, looking at this picture:
I would recommend a brief study of the datasheet of the output transformer for starters...
http://media.digikey.com/pdf/Data%20Sheets/Pulse%20PDFs/PE-65x12_Rev2006.pdf
I think fixing some of the other problems will help a lot more than a "magic connector", though the latter no doubt makes one sleep better.
Thor
At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need?
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Follow Ups
- RE: Why?I woudln't pay - Thorsten 13:08:24 02/18/14 (3)
- in line - fmak 22:16:08 02/18/14 (2)
- still not 75R - Thorsten 00:14:51 02/19/14 (1)
- RE: still not 75R-use coax - fmak 00:32:59 02/19/14 (0)
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