Faq - QHYCCD COLDMOS QHY163M User Manual

12 FAQ

1. Does QHY163M support 10bit or 12bit?
QHY163M supports both 10bit and 12bit output(For 10bit, it is 0-255, and it only uses the high 8bit,
for 12bit it is 0-4095 map to 0-65535).
2. How to get maximum FPS?
Since QHY163M has very high data bandwidth. Not all computer can get the maximum FPS.
Normally I7-4core should have no problem for that. The CPU loading will also affect the maximum
FPS. So please reduce the CPU load by close other applications when using camera. If the CPU load
is too high, the software may become very slow or hang.
3. How to avoid the camera hanging?
If you camera always hangs. It may be caused by many reasons. You can check the following things.
If your computer is via chipset, or some type of the mainboard. In SharpCap it cannot get image at all.
(But in ASCOM it works well). In this condition, you need enable the DDR buffer of the camera.
Current SharpCap supports DDR function enable. The next version SharpCap will support it.
If there is power leak for your mounts and computers? The power leak may cause the leak current
transfer from computer to the camera via the GND. This may affect the USB transfer and cause the
data packet lost and cause it hang. You need to make sure the computer and the mount is well
grounded.
If the USB port's voltage not enough? Some computer's USB port +5V is not enough. It may cause
the camera always hangs. In this condition you can use a powered USB3.0 HUB to connect camera
and get the good +5V power for camera.
If your CPU load is too high? If CPU load is too high, it will cause many frame lost and cause the
camera hangs. You can increase the USB traffic value to reduce the FPS and get more stable video
transfer.
If the USB cable connection is good enough? Sometimes the contact issue in the USB cable to
camera or USB cable to computer will cause the signal loss and cause camera to hang. Especially
when you move the cables. In this condition. You can try to add a little silicon oil into the USB
socket/plug .This can increase the contact a lot better.
Avoid the statics. Sometimes the static electricity on human body will cause the camera to hang. You
can touch the computer metal case for first before touch the camera to let the static electricity on your
body release.
Some computer's front USB port is not so good for high speed transfer (The reason is it connected
to mainboard by a cable and which has no good signal integrity). If you found the camera always
hang on front USB port. You can try the USB port on backside of the computer (which is connected
to chipset directly on the mainboard).
4. What's the interface to telescope? How to use C/CS lens on QHY163M?
QHY163M supports C lens but currently doesn't support CS lens. You need order the optional C
adapter for QHY163M with this adapter the back focal is 17.5mm and you can use the C- mount lens
with it. Since this sensor is 4/3 inch, you need to choose the lens which can cover the 4/3 inch image
circle.
22
QHY163M