Big Mess o’ Wires


A home-built CPU, and other messy electronics adventures

Logic Analyzer/Oscilloscope

My Hewlett-Packard 1631D logic analyzer / digital oscilloscope arrived today: the finest 1985 technology that $35 can buy. I bought it dirt cheap from eBay in “as is” condition, but it seems to be working great! With this acquisition, I can proudly say that I’ve crossed the line from ordinary run-of-the-mill nerd to super-nerd.

Holy cow, there are a lot of buttons and wires on this thing. What’s a trigger? Where’s the manual? My head hurts just thinking about it.

After some time spent jabbing hesitantly at buttons, I finally managed to get a scope trace working. Here it is, showing the output of a 1 MHz clock oscillator. Mmmm, square wavy goodness!

HP 1631D

2 Comments so far

  1. Matt February 28th, 2009 1:57 am

    “I can proudly say that I’ve crossed the line from ordinary run-of-the-mill nerd to super-nerd.”

    Yes, yes you can! I’ve been browsing through this blog after hackaday linked to it, and I’m blown away at your skill and persistence on this project!

    You put supposed hardcore geeks like me to shame. Very well done!

  2. Metaforest May 30th, 2009 10:56 pm

    o.0

    I actually used to have one of those HPs on my desk when I was an SQA engineer for the Apple //gs project back in 1986 and 1987. That just took me on a Wayback Machine trip…. :D Thanks

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