AC4040 Camera Unexpectedly Disconnects when Taking HDR Frame

Discussion in 'Aluma AC Series CMOS' started by Greg Nelson, Jul 8, 2024.

Page 2 of 2
  1. Greg Nelson

    Greg Nelson Cyanogen Customer

    Joined:
    Jan 15, 2021
    Messages:
    106
    Location:
    Gold Canyon, AZ
    Sorry to hear about the COVID, but thanks for doing a test. When I get the camera back, I'll install the files your sent and let you know if that solves the problem on my end. Thanks and get well soon!
     
    Greg Nelson, Sep 11, 2024
    #21
  2. Mark Marfoglia

    Mark Marfoglia Cyanogen Customer

    Joined:
    Oct 19, 2014
    Messages:
    188
    Location:
    Montreal, Quebec, Canada
    I have a similar issue with my AC4040BSI, which disconnects unexpectantly.
    At the beginning of the night, while taking short exposures for focusing it craps out. Once I power cycle it once (can’t warm it though) it works fine afterwards. It does this every night, and it worries me because I have to kill the power while it is still cooling.
    Should I be trying your new drivers?
     
    Mark Marfoglia, Sep 11, 2024
    #22
  3. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    7,909
    Location:
    Earth
    Hi Mark,
    Try this: https://forum.diffractionlimited.co...connects-turn-off-usb-selective-suspend.7848/
    I expect that will cure it.
    If not, then see my other comment to you about driver versions.
     
    Colin Haig, Sep 12, 2024
    #23
  4. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    10,290
    Don't worry too much about thermal cycling. The chip does not instantaneously warm up when you kill the power - the cooler stack has significant thermal inertia. Power loss also happens to remove the biggest heat source from the stack, which is the CMOS electronics in the sensor.
     
    Doug, Sep 12, 2024
    #24
  5. Mark Marfoglia

    Mark Marfoglia Cyanogen Customer

    Joined:
    Oct 19, 2014
    Messages:
    188
    Location:
    Montreal, Quebec, Canada
    Thank you both for this info. I had done the USB « fix » but not the COM one. I will try this out.
     
    Mark Marfoglia, Sep 13, 2024
    #25
  6. Greg Nelson

    Greg Nelson Cyanogen Customer

    Joined:
    Jan 15, 2021
    Messages:
    106
    Location:
    Gold Canyon, AZ
    Adam, got the camera back and tested ran last night. Had a successful run so it's back to functioning again.

    I dropped in the file as you instructed, restarted, cycled power, and then opened Maxim 7.03 and connected to camera. I took a 1 sec exposure of Low Gain, High Gain, And High Gain StackPro with no issues. But, no joy, when I took the HDR image the camera did exactly as before. First the AO-Z window and log window title bars changed color. Then these two windows disappeared and I got the error message window with message Camera disconnected unexpectedly (-4).

    I recycled power, restarted, and did the same procedure a second time and got the same thing. Looks like somewhere I have a software issue that is preventing me from taking HDR images.

    One other note, when I run DLConfig (x64) I get this report

    Curious that is does not show a different version number for dlapi.dll after I copy the file you sent into the System32 folder.

    dlapi.dll ......................... 2.8.0.0
    DLAPIWrapper.dll .................. 2.8.0.0
    ASCOM.DLImaging.Camera.dll ........ 6.4.22.0
    ASCOM.DLImaging.CameraExt.dll ..... 6.4.22.0
    ASCOM.DLImaging.FilterWheel.dll ... 6.4.22.0
    ftd2xx.dll ........................ 3.2.16.1
    ftd3xx.dll ........................ 1.3.0.4
    wpcap.dll ......................... Not Installed
    packet.dll ........................ Not Installed
     
    Last edited: Oct 8, 2024
    Greg Nelson, Oct 8, 2024
    #26
Page 2 of 2

Share This Page