QHYCCD QHY90A, Руководство пользователя

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QHY90A
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Caution: Never connect the grounding port to any electrical socket or outlet, otherwise, electrical shock
may happen.
Note that the camera used in the picture above isn’t QHY90A, it is QHY16803A. They have the same
peripheral ports.
12V power ports
These two ports are connected in parallel, so you can either one of these two as power input port and use
the other one as a power output port for other devices that need 12V power supply.
USB type-A ports
These two ports are USB expansion ports connected to the built-in USB hub, you can use it to connect with
guide camera or other USB devices. This two ports can output 500 mA current. To reduce the power load
of the internal circuit, it's recommended to reduce the use of current.
QHY A series Cameras have a USB hub board in them. And these two USB type-A ports along with these
two serial ports aforementioned are all branched out by the USB hub board. However, in some particular
condition, it results in conflict and the camera will stop working. For example, in the condition where there
equatorial mount you are using also has a built-in hub or where you used a USB hub already. In this case,
you need to install the USB Hub bypass board (small red- colored board) included in the package.
For detailed instruction of how to install the USB hub bypass board, please check the content in the following
link.
After you've installed that, those two USB type-A ports and those two serial ports become invalid.
USB type-B port
This port is used to connect the camera to the computer.