QHYCCD QHY8L - Manual (Page 3)

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Chapter 1.
Connection and Safety Instructions
1. The larger surface area of the CCD chip and cooling system make it more
fragile than a small or medium sized CCD. Take extra care when transporting
and using the device.
2. Do not block the cooling vents.
3. Connection Sequence:
• Connect USB cable from camera to PC
• Connect 9-pin cable from camera to DC201, with EMC filter on DC201 end
• Connect 12V power to DC201
4. Disconnection Sequence:
• Disconnect 12V input power from DC201
• Disconnect 9-pin cable from camera
• Disconnect USB cable from PC
5. Ensure that the power converter is properly grounded.
DC201 Input Voltage Range and Power.
• The DC201 requires a regulated 12V input. The normal input range is 11V-13V.
If you exceed 13V when using an external power supply, the higher voltage will
reduce the life of the Thermoelectric Cooler (TEC) and fan. Please limit the
maximum power of your cooling settings if you have to use your camera in this
case. Please check "Favorite->TEC Protect" in the EZCAP software. If you are
using the ASCOM driver, this has been set automatically.
• the QHY8L uses double refrigerating refrigerator, and the temperature can drop
below the environment temperature by about 30 degrees Celsius.
• Service temperature of the QHY8L is from -20°C to 40°C, Relative humidity
amount is from 0% to 90%.
6. QHY8L CCD Sensor Readout Mode:
The QHY8L uses a two frame readout CCD sensor. Due to the nature of the CCD
readout mode, there are several things to which you need to pay attention during
shooting and image processing.
The blue and half of the green pixels are read in the first frame. The red and half of the
green pixels are read in the second frame. After the first frame exposure finished and
CCD electron is being readout, the second frame is still being exposed. This will cause
the exposure time of the two frames to be slightly different. In order to get the same