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Thread: OPUS 250 Delayed shutdown timer...

  1. #1
    Variable Bitrate checksum's Avatar
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    OPUS 250 Delayed shutdown timer...

    My undertanding of the delay shutdown timer was that when you turn off your car, the computer will go into hibernate mode instantly, and wait xx seconds (set by jumpers) before cutting power to the computer.

    But I was wrong, when you turn off your car, the computer waits xx seconds (set by jumpers) before going into hibernate mode. And then when does it cut power off to the computer?

    I do not understand this design.
    Why would it wait for example 5 min before turning off the computer after you turn off your car? What is the advantage of doing that?
    I mean when I turn off my car, I don't want the computer to be playing music for 5min or 10sec when I am not inside.

    Best thing would be to go into hibernate mode once ACC is off and wait xx seconds before cutting power completly to the computer.

    Is there any way to acheive this with the OPUS 250?
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  2. #2
    Neither darque nor pervert DarquePervert's Avatar
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    Quote Originally Posted by checksum View Post
    My undertanding of the delay shutdown timer was that when you turn off your car, the computer will go into hibernate mode instantly, and wait xx seconds (set by jumpers) before cutting power to the computer.

    But I was wrong, when you turn off your car, the computer waits xx seconds (set by jumpers) before going into hibernate mode. And then when does it cut power off to the computer?

    I do not understand this design.
    Why would it wait for example 5 min before turning off the computer after you turn off your car? What is the advantage of doing that?
    I mean when I turn off my car, I don't want the computer to be playing music for 5min or 10sec when I am not inside.
    You shut off your car to run into 7-Eleven to get a 12-pack of beer and some donuts. You're inside for only a few minutes.
    By having the PC stay on for five minutes after turning off the car, the PC is still on when you get back in the car and you don't have to wait for it to sboot up (or resume from hibernation or whatever).

    Best thing would be to go into hibernate mode once ACC is off and wait xx seconds before cutting power completly to the computer.

    Is there any way to acheive this with the OPUS 250?
    I know my DSATX does this. I'm pretty sure that the Opus can, as well. I can't tell you how to achieve this.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  3. #3
    Variable Bitrate checksum's Avatar
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    So in that case after it goes into hibernate mode, how long does it take to cut power off to the computer. Or it does never cut power off to the computer unless your baterry drops below the threshold voltage?
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  4. #4
    Neither darque nor pervert DarquePervert's Avatar
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    Hmmmmmm.
    According to the manual, there should be no jumper on J1-6 for your situation. The PC will shut down and then the Opus will cut off all power.
    I don't know the timing of cutting off all power, though. It may be when the PC is fully shut down or have a hard-coded timeframe to allow hibernation or full shut down, depending on what you have configured.

    You may need to contact Opus Solutions to find out that information.

    One thing it does say in the specs:
    Wake on interrupt operation time: 20 minutes (while Ignition is Off)
    That might mean that it cuts off all power 20m after initiating PC shutdown. I'm not certain. I don't use an Opus unit, so I can't be certain.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  5. #5
    Maximum Bitrate binary.h4x's Avatar
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    I'm pretty sure the opus waits for the computer to tell it when to cut all power.
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  6. #6
    Variable Bitrate checksum's Avatar
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    According to the manual, there should be no jumper on J1-6 for your situation. The PC will shut down and then the Opus will cut off all power.
    I don't think that's what the manual is saying...
    According to the diagram, no jumpers on JU1-6 means that the computer will go into hibernate 10sec after ACC is off, and that the power draw will be less than 3mA, and that it will only cut power off to the computer if the baterry voltage drops below 7.0V. So this can evantually drain your battery at night or if you do not use your car for days.
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  7. #7
    Variable Bitrate checksum's Avatar
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    I think this will do the job for me:

    http://www.astron.nl/~smirnov/poweroff.html


    With no jumpers on JU1-6:
    So, you turn off your car, 10sec later it goes into hibernate mode. After 10min if you do not turn it back on, the delay circuit will cut power off to the power supply which will then cut power off to the computer.
    2005 Nissan Altima - Completed 2007
    2010 Nissan Altima - Coming Soon...

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