QHYCCD

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1
QHYCCD Standard Software Q&A / Re: X2 Plugin
« Last post by QinXiaoXu on June 16, 2021, 08:44:08 PM »
    Well,I tested this issue with 20210313 version X2 plug-in,but it has no this issue,which version plug-in do you use?And could you send the screenshots for this issue?
Best Regards,
QinXiaoXu
2
Hi,
for me should be ok to set a flag in an .ini file in order to allow the cooler to be off at start-up. However I think this is not a customer requirement, but a camera requirement to avoid thermal stress to the sensor which reduces its life span. I also own cameras from other brands, and these work differently from QHY cameras. When switched on, the cooler is off and a command shall be sent to switch it on. If the USB connection is removed, the cooler continues to operate normally. Furthermore, the logic is not powered by the USB bus but by the 12V power supply via a DC / DC converter. In this way the voltage that feed the logic is always stable regardless of the voltage drop due to the USB cable and does not absorb current from the PC. With only one USB2 port I can power a HUB, the focuser logic, the filter wheel and the guide camera using a 5 + 1 meters of USB cable with no problems. With the QHY268M I have to review the whole configuration because I discovery that it absorbs about 270 mA from the USB2 BUS and this causes instability in the above system, filter wheel reset / focuser reset and cameras hang and it is not possible to work in reliable way.There are also strange messages that Sequence Generator shows (same time) when I try to connect the camera. I will provide the screen shoot when these messages will appear again.

Thank and best regards,
Sergio
Hi,
    Yes,its grassroots solution is modify it in FPGA or hardware,but I'm not known its details,I only work on software.You can contact this to Dr.Qiu about this issue,and you also can inquire the unstable system issue.
    And I will wait for your screenshots.
Best Regards,
QinXiaoXu
3
QinXiaoXu,

Thank-you for your very detailed update. I think your suggestion of adding this function to the qhyccd.ini file is the best solution.

I typically power my camera up without plugging in the USB cable.  I have a powered USB hub at the telescope.  If I then plug in the USB cable between the camera and the powered hub and don't connect the USB hub to my computer this creates a situation where the USB port on the camera has power but cannot communicate to the computer.  Is this the situation you described when you say "If you just connect USB and power, but don't open it via software,the camera still will make cooler work."

Is it possible to have the camera not turn on the cooler in this situation?

For me this is not a problem because I always connect the powered USB hub to my computer first.  The last thing I do is to connect the USB cable to the camera.  This causes the QHY software driver to immediately connect.

Do I understand the issues your have raised?

Regards,

Peter
Hi,
    No,I mean you connect the power and connect USB cable to computer,but not open camera in software.
    And it seem you will opencv camera in software immediately,so it has no influence for you.I will try add it to qhyccd.ini.
Best Regards,
QinXiaoXu
4
Hi,
for me should be ok to set a flag in an .ini file in order to allow the cooler to be off at start-up. However I think this is not a customer requirement, but a camera requirement to avoid thermal stress to the sensor which reduces its life span. I also own cameras from other brands, and these work differently from QHY cameras. When switched on, the cooler is off and a command shall be sent to switch it on. If the USB connection is removed, the cooler continues to operate normally. Furthermore, the logic is not powered by the USB bus but by the 12V power supply via a DC / DC converter. In this way the voltage that feed the logic is always stable regardless of the voltage drop due to the USB cable and does not absorb current from the PC. With only one USB2 port I can power a HUB, the focuser logic, the filter wheel and the guide camera using a 5 + 1 meters of USB cable with no problems. With the QHY268M I have to review the whole configuration because I discovery that it absorbs about 270 mA from the USB2 BUS and this causes instability in the above system, filter wheel reset / focuser reset and cameras hang and it is not possible to work in reliable way.There are also strange messages that Sequence Generator shows (same time) when I try to connect the camera. I will provide the screen shoot when these messages will appear again.

Thank and best regards,
Sergio
5
QHYCCD Standard Software Q&A / Re: X2 Plugin
« Last post by MAJOROBS14 on June 16, 2021, 02:23:22 PM »
So whats the latest update on this topic?  I still can NOT change the gain settings for my QHY 128C camera in The SKY-X using the X2 Plugin.
6
QinXiaoXu,

Thank-you for your very detailed update. I think your suggestion of adding this function to the qhyccd.ini file is the best solution.

I typically power my camera up without plugging in the USB cable.  I have a powered USB hub at the telescope.  If I then plug in the USB cable between the camera and the powered hub and don't connect the USB hub to my computer this creates a situation where the USB port on the camera has power but cannot communicate to the computer.  Is this the situation you described when you say "If you just connect USB and power, but don't open it via software,the camera still will make cooler work."

Is it possible to have the camera not turn on the cooler in this situation?

For me this is not a problem because I always connect the powered USB hub to my computer first.  The last thing I do is to connect the USB cable to the camera.  This causes the QHY software driver to immediately connect.

Do I understand the issues your have raised?

Regards,

Peter

7
Image Issue Q&A / Re: QHY268M is not cooling fully
« Last post by Mark.Munkacsy on June 16, 2021, 09:10:29 AM »
Hello,

The weather is warmer now in Canada and I've noticed the cooler is not working properly.  The last two imaging sessions I was unable to use the camera.  I was not able to drop the camera temperature by 15 degrees before the camera stopped communicating. 

Ah, this is the same problem that I reported in this thread: https://www.qhyccd.com/bbs/index.php?topic=8648.0
I had assumed that this is "normal" for the QHY268M, but the response to this thread suggests otherwise. There is a combination of ambient temperature and TEC power that causes the camera electronics to lock up. There's another thread in the forum about the QHY268M firmware initializing the cooler to a setpoint temperature. When this temperature is below the ambient, that triggers the PWM power to go to 100% as soon as the camera starts up, which is a triggering condition for the thermal lockup.

Is this thermal lockup the same on all QHY268M samples? Or will camera (or cooler control board) replacement make the problem go away? Can the problem be prevented by having the firmware start the camera in "manual PWM control" mode with an initial power of something low (perhaps 2 out of 255)?

- Mark M
8
Astronomy equipment Discussion board / Re: QHY9 camera repair
« Last post by Yuki on June 15, 2021, 11:31:07 PM »
Next Robin will try to send your camera back to us for repair.

But he didn`t reply to me.

I will contact him again.

Best Regards
9
Hi,
    About the suggestion that update this function to all cameras,in fact,I'm afraid this is not available,because this driver contains all USB3.0 cameras,and the driver also will add new cameras,this will make difficult for manage edition,and not everyone need this function.So now I can only modify driver if customers have needs.
    And just like I said,I can try add this function to qhyccd.ini,everyone can setup,no matter if the people can program.
    And it have another issue,if you just connect USB and power,but don't open it via software,the camera still will make cooler work.Do this have influence for you?
Best Regards,
QinXiaoXu
10
QHYCCD Standard Software Q&A / Re: QHY294C Pro Drivers
« Last post by ikonos2 on June 15, 2021, 09:06:51 PM »
Thanks for the clarification.

Cheers,
A.
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