Third Party Accessories--HP-41 - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: Third Party Accessories--HP-41 (/thread-11388.html) |
Third Party Accessories--HP-41 - Joe Moran - 10-02-2001 Years ago an acquaintance of mine had a digital voltmeter which plugged into one of the ports on the HP-41CX. He used it with some simple circuitry to monitor and record fermentation temperatures for his home-brewing hobby. And I recall seeing an ad--maybe in the EduCalc catalog--for an IL compatible A/D converter.
Anybody remember the manufacturers of these devices?
Re: Third Party Accessories--HP-41 - michael Tjebben - 10-02-2001 Are you truly referring to 3rd party accessories or are you ?
-Mike
Re: Third Party Accessories--HP-41 - Ellis Easley - 10-03-2001 I found two products in 1988 and 1989 EduCalc catalogs (my oldest ones) and nothing after. One is Interface Instruments ADC71A. The description says "It's a 16 channel input, 8 channel output, 4-1/2 digit, analog-to-digital interface that connects to any HP interface loop." Four ranges: 40, 160, 640 mV, 2.5 V. One optically isolated 8-bit digital output port. Thermocouple reference junction built-in. List $750, price $649.95. The other is made by HP, "Stock #IL-800 [#210 I/O Interface] List $590 ..... $544.95" Features listed are 32 digital output lines, two TTL 8-bit input ports, an 8-bit DIP switch that can be read via HPIL, "Analog input section has 8-bit resolution or 8 channels" (?), 7 timers, 7 counters (all 16 bit), "NOTE: this is an inexpensive, unpackaged PC Board for professional use."
Re: Third Party Accessories--HP-41 - Tony Duell - 10-03-2001 Christoph Klug describes a number of commerical HP41-compatible measuring instruments in his book 'HP41 Input/Output Board'. Re: Third Party Accessories--HP-41 - Joe Moran - 10-04-2001 Thank you all. The CMT-300 sounds like the item.
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