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USBEE, CleverScope Is this stuff any good?

Discussion in 'Electronic Design' started by Anthony Fremont, Mar 4, 2007.

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  1. In my ongoing quest for some new equipment, I'm also looking for a small
    logic analyzer of some sort. I don't really want (or have room for) a big
    CRT based analyzer even though the price is right on e-bay.

    I'm willing to go with a USB based LA if they work as advertised. So far
    the USBEE looks to be pretty good if it really works. The one I'm looking
    at (ZX) has only 8 inputs, but captures 24Msa/s. It has a 1M buffer
    internally, but can rocket data to the PC at the full 24Msa/s if the machine
    is fast enough making for incredible capture depth ability. Anybody use
    one? Anybody know of something better in the $400-$500 range? I know the
    ZX lists for $895, but I can obtain one for about $400.

    All input welcome on your favorite logic analyzers.

    Also, any thoughts on PC based scopes (like CleverScope) vs. regular DSOs?
    CleverScope looks fairly impressive even sized up against a "real" scope. A
    dual channel scope and logic analyzer for less than $1200 is interesting to
    me. It would be a little odd at first, but the PC centric approach might
    not be a bad way to go. I already have one sitting near by for
    editing/assembling code, flashing PICs and/or displaying/sending serial data
    to a project. Maybe one screen is the way to go?
     
  2. Guest

    I bought this

    http://www.pctestinstruments.com/

    Very happy.
     
  3. Joerg

    Joerg Guest

  4. Guest

    I have one too, like it very much. Not expensive:
    http://www.pctestinstruments.com/
     
  5. I saw that early on and it really caught my eye. Incredible samble rata and
    nice looking display of the data. I really like the protocol decoding, but
    I find that others do it too though usually not as nice looking. The only
    thing that concerned me was the shallow capture buffer, but 2K samples would
    still be allot of data. Thanks for the reply.
     
  6. Is it good at glitch detection? I really like all the capture pin
    capability. I was worried that the capture buffer would be too small, do
    you find it to be plenty large enough. Do you ever find yourself wishing it
    was larger?
     
  7. Guest

    I'm real happy with mine too.

    It can't catch glitches like a TLA can, but it's better than the
    USBee. Not that the USBee is a bad gizmo, it's just that this one is
    a much better logic tracer.

    32 @ 250 > 8 @ 24 !
     
  8. What kind of signals do you use it for primarily? I'm concerned about the
    buffer depth. That was one thing I liked about the USBEE is that even
    though it could only sample 24Msa/s, it could do it forever over the USB
    buss as long as the computer is fast enough. Outside of that, I really like
    the LogicPort better.

    Since there hasn't been any support for the USBEE here, but three people
    like the LogicPort, I guess I probably know what I should get now. :)

    I downloaded the software for the LogicPort and played around in demo mode.
    Maybe it's me or it's the demo mode, but I tried setting up triggers and
    they didn't seem to be effective. Also, changing the sample rate had no
    effect on the buffer size, it would always represent 20.48uS of time asif
    the sample rate was locked. Reported frequency measurements didn't jive
    with what was being shown either. I assume this is all due to it being in
    demo mode.
     
  9. Sorry, Tony, didn't see this till now. I have an older model USBEE, and
    generally like it, but I haven't used it as much as I would like to.
    Haven't done the design work I got it for... :-(

    Charlie
     
  10. Guest

    I'm not sure about the buffer depth. I'll look and tell you. I mainly
    use mine for reading a/d's and looking at bit patterns from
    uControllers we've programmed.
    If there's something you want me to check, post it.
    We find it very easy to use.
     
  11. Guest

    The buffer depth is 2048 words (of 34 bits).
    A very strong argument for the Logicport is the sample compression.
    I use(d) it to monitor a number of relatively slow pulses (ms) going
    in and out
    of an MCU and find that for that kind of use it was perfect.
    I also like the clean look of the software (compared to other
    solutions).
     
  12. So far this is the leader of all the stuff I've seen. There are things
    about the USBEE that are nice as well like continuous capture. Seems like
    you really need more than one to do it all, but I'll probably get the
    LogicPort first.

    Thanks for all the input guys. :)
     
  13. Rob Denford

    Rob Denford

    1
    0
    Aug 20, 2010
    PC scope

    Hi I bought a Cleverscope mixed signal scope. I'm really happy with it. Good sample depth. I saw found it at http://www.cleverscope.com/.
    - Rob Denford


     
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