QHYCCD QHY16803A, Manual

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QHY16803A
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.
http://note.youdao.com/share/?token=D1C38D9FEEDD41D2A8C7D33F9EB74294&gid=7234866
#/
After you've installed that, those two USB type-A ports and those two serial ports become
invalid.
Note that the camera used in instructions are not QHY16803A, but they have similar structure.
Follow the instruction carefully.
USB type-B port
This port is used to connect the camera to the computer.