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Recommendation for a logic probe

Discussion in 'Electronic Equipment' started by Joel Kolstad, Dec 4, 2003.

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  1. Joel Kolstad

    Joel Kolstad Guest

    Hi all,

    I used to have an old Radio Shack logic probe that I really liked for its
    audio output as I didn't have to take my eyes off of whatever I was probing
    at the time to know if the corresponding signal was 'wiggling.' It also had
    a 'level' mode -- where a high or low signal produced a high or low tone
    (and indeterminate levels were mute) and a 'pulse' mode where each edge of a
    signal would produce a quick 'beep.'

    Unfortunately, it was designed for 5-15V and attempting to use it at 3.3V
    didn't really work that well. Does anyone know of a comparable device that
    does work at the now ubiquitous lower logic voltage rails? Down to 2.5V
    woud be great -- even 1.8V is nice.

    The Radio Shack probe's 'pulse' mode also had a minimum detectable pulse
    width of 1us, I believe -- pretty glacial by today's standards. Something
    <10ns would be good here too.

    ---Joel Kolstad
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