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From: akcs.jwtrav@hpcvbbs.UUCP (John Wettroth)
Newsgroups: comp.sys.handhelds
Subject: Re: Digital Multimeter Front-End for HP48sx?
Keywords: HP48, Scope
Message-ID: <283607b6:3027.4comp.sys.handhelds;1@hpcvbbs.UUCP>
Date: 19 May 91 05:40:06 GMT
References: <1991May4.133115.11892@netcom.COM> <59825@aurs01.UUCP>
Lines: 9

i may have a partial solution. i sell a gadget called the adcm-48 that
interfaces with the hp-48 over the ir link and offers 4 8 bit analog
inputs, 4 ttl/cmos digital inputs and 4 .5 amp digital outputs. it offers
a burst mode which allows reading the a/d 100 times a second for "scope"
type applications.  it is available from edu-calc now for $199. also a
little further up the thread john hoford stated that 9600 baud means 9600
bytes per second, actually that's bits per second. his argument is
correct but is high by a factor of 10! (480 samples/second is the nyquist
limted bandwidth).  check out the adcm-48, there is even a simple scope
program included on the disk that comes with the unit. good luck.