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Thread: help with odb digital gauge latency

  1. #1
    Newbie
    Join Date
    Jan 2007
    Posts
    16

    help with odb digital gauge latency

    hello,
    i'm using the odbpros usb interface.
    and i notice there is a lag which the guage display my speed and rpm.
    i'm not expecting regular car guage quickness, but a lag this long isn't right to me.

    i have the pioneer avic-z1 with a digital guage, hook up to the VSS sensor wire in the ECU. and that digital guage have a better and faster response time.

    just wish the odb with carpc is just as quick.

    is there something on my part that i can configure or set for it to work better?
    milisecond? etc.?
    i'm currently running pcmscan 1.4.3 and digimoto 4.0.3 and proscan 5.0

    thanks

  2. #2
    VENDOR - OBDPros
    Join Date
    Mar 2006
    Posts
    359
    Have you played around with the ATST setting? Out of the box the interface waits 200 ms to ensure it gets all responses from the OBD bus, you should be able to experiment with lower settings.

    You can configure the timeout value to a much lower setting (most likely set to 0x32 by the software) something around 0x7 to 0x12 and that will improve the response times.

    Let me know if you need help with finding that parameter on your software and I can do some screen shots to highlight the setting.

    Thanks
    Paul
    www.obdpros.com

  3. #3
    Newbie
    Join Date
    Jan 2007
    Posts
    16
    hello thanks for the reply for this thread and the other one.
    which program's setting are you referring to? if you can be more specific. thank you appreciate it.

  4. #4
    VENDOR - OBDPros
    Join Date
    Mar 2006
    Posts
    359
    Quote Originally Posted by 3square View Post
    hello thanks for the reply for this thread and the other one.
    which program's setting are you referring to? if you can be more specific. thank you appreciate it.
    I have highlighted the setting in the attached picture try setting the timeout to 60 milliseconds and you should get better response times, you can experiment with this setting since for CAN vehicles you should be able to get down to as low as 16 ms.
    Attached Images Attached Images  

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