Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!oberon!neuro.usc.edu!annala
From: annala@neuro.usc.edu (A J Annala)
Newsgroups: sci.electronics
Subject: Re: HELP:  FM Recording of 300-3KHz channels on 50 KHz tape deck
Message-ID: <15145@oberon.USC.EDU>
Date: 3 Feb 89 08:24:48 GMT
References: <15020@oberon.USC.EDU> <18062@glacier.STANFORD.EDU>
Sender: news@oberon.USC.EDU
Reply-To: annala@neuro.usc.edu (A J Annala)
Organization: University of Southern California, Los Angeles, CA
Lines: 25

I just learned from HP that they no longer manufacture the HP3964A
instrumentation tape recorder mentioned in my original note.  They
called it "obsolete equipment" ... and the notes I received by the
electronic mail suggest that almost no one records analog signals
anymore ... instead current practice seems to be to get ahold of a
VME bus (or faster) machine, do a quick analog to digital convert,
and store the data to disk immediately.  Unfortunately, I cannot
afford to buy a VME (or faster) processor system ... therefore, I
am stuck recording rapid signals on tape, reproducing those signals
at slow speed, and converting them through my low bandwidth A-to-D
converter board in my IBM PC.  However, I just don't have enough
channels on my 4 track HP3964A, and no one seems very knowledgable
about multiplexing several signals onto one of those four channels,
so ... I am curious about whether anyone out there in net land may
have an HP3968A (or other relatively high speed recent vintage 8
channel instrumentation recorder) they might be willing to donate
to USC for use in my project.  If these things are truely antiques,
and yet they are adequate for my use, perhaps such an arrangement
might benefit both USC and the donating party.

In any case, thanks for all your advice ... and, if anyone thinks
about donating an HP3968A (or equivalent) to USC, thanks for your
consideration.

Thanks again, AJ Annala, USC Neuroscience Program (213) 743-3278.