QHY163
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SharpCap version has options for enabling/disabling the DDR buffer. The current ASCOM driver is always
working under DDR enabled mode.
8.
How to protect the cooler in QHY163C?
The cooler in QHY163C can lower the CMOS temperature to a value that's almost 40 degrees
centigrade below the ambient temperature. So you need to be careful to avoid thermal shock, which
means that when the cooler's temperature rises or fall dramatically, the cooler is subjected to strong
internal stress due to contraction principle. Drastic thermal shock can shorten cooler's service life or
permanently break it.
So when you begin to adjust the CMOS temperature, you should avoid setting "Cooler Power" to its
maximum value, and you should gradually turn up the "Cooler Power" value. When you turn off the
power, if the "Cooler Power" value is very big, you should gradually turn it down before turn off the
power.
9.
The FPS of cameras sometimes suddenly drops to zero under DDR mode on SharpCap,
what’s the solution for this problem?
Recently, we have been told by our users that the FPS of their cameras sometimes suddenly drops to zero
under DDR mode on SharpCap. It is caused by the fact that the receiving speed of computer is relatively
slower than the sending speed of camera. Once CMOS sensor starts working, it will incessantly conduct
exposure and output image data over and over again, and it cannot be interrupted. If USB transmission
was interrupted too often by the operating system, the data overflow of DDR would ensue resulting in bad
frame. Therefore, not a single frame is a complete frame, and the FPS will drop to zero.
Solutions:
The first solution to this problem is to increase the value of USB traffic to decrease the FPS of the cameras.
Note that by using previous version of SharpCap Patch, the value of USB traffic cannot be set to a value
large enough, so you should go to our website to download the latest version of SharpCap Patch.
The second solution to this problem is to turn off the DDR mode, but for computers whose performance
isn’t very good, this solution may not work very well.
