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KB2VXA > HELP 15.03.05 05:21l 35 Lines 1315 Bytes #999 (0) @ WW
BID : 35198_NJ2AR
Read: GUEST
Subj: Re: N2OHH > USB interface
Path: DB0FHN<DB0RGB<DB0MRW<DB0WUE<DK0WUE<7M3TJZ<UA6ADV<HB9AK<K1UOL<K1UOL<
WB2QJA<KC2COJ<NJ2AR
Sent: 050314/1504Z @:NJ2AR.#CNJ.NJ.USA.NOAM #:35198 [Lakehurst] $:35198_NJ2AR
From: KB2VXA@NJ2AR.#CNJ.NJ.USA.NOAM
To : HELP@WW
Hi Vin and readers,
I agree with everything you wrote, it all makes perfect sense. My
situation is but one, conditions DO vary so what worked for me may not
always be the case.
My suggestion now is start at the bottom, if a problem is encounered work
up. In other words, if isolation is needed add it, if transformers don't
work adequately use optics. Yes, ground loops can be a problem, that's
why all the test equipment where I used to work was isolated using those
"3 way" adapters on the AC mains plugs, the protective case ground left
floating. Yes, some older sound cards have no line in provision so
another L pad attenuator is needed. BTW, line in / line out is usually
600 ohms, the pad may be constructed accordingly.
Then again we just might be barking up the wrong tree. I just thought of
something, the original question regards a >USB< interface. Is he trying
to use a USB port? Only the original poster can answer that...
73 de Warren, KB2VXA@NJ2AR.#CNJ.NJ.USA.NOAM
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Message timed by NIST: 15:18 on 2005-Mar-14 GMT
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