OPERATING AND USER MANUAL QUARTZ series CXP
8
Precautions:
Take precautions to prevent ESD that can damage the CMOS sensor.
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Cleaning of the CMOS sensor, and assembly of the lens is preferably performed in a clean
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room or clean bench.
Never try to clean the CMOS sensor at a relative humidity lower than 30%. A relative humidity of
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40% or higher is preferred in order to minimize the chance of damage due to ESD.
It is advisable to use an ionizer, in order to minimize the built-up of ESD.
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Be sure to clean the lensmount of the lens before assembly.
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Use non-fluffing Q-tips and Alcohol (or Hexane) for cleaning. De-ionized water may be necessary
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to remove ionic contaminants like salts.
Any Q-tip should be used only once - you will otherwise move dirt from one place to another.
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Never dry rub the window. This may cause static charges or scratches that can destroy the CMOS
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sensor.
Cleaning instructions:
First try to remove the contamination by using clean, dry air. (Use an ultra-filtered, non-residue
1.
dust remover spray). Avoid blowing air into the screw thread of the lensmount, because this may
cause contamination on the CMOS sensor due to loose particles and traces of oil or grease.
If this step does not result in an acceptable result, continue with step 2.
Remove the lensmount by unscrewing the 4 crosshead screws
2.
that hold the lensmount (see figure 2.1).
Crosshead screws that hold the lensmount (front view of the camera).
Figure 2.1:
Clean the inner screw thread of the lensmount using Alcohol or Hexane and a Q-tip.
3.
Clean the CMOS sensor cover glass using Alcohol or Hexane and a Q-tip.
4.
Gently and carefully rub the window always in the same direction, e.g. top to down.
Install the lensmount back on the camera front.
5.
Maximum tightening force may not exceed 0.3 Nm.
Install a lens, power up the camera, set the lens at a small aperture (F16) and point
6.
the lens at a bright source. Adjust gain and integration time if necessary.
Check the image on the monitor for dark spots and stripes caused by contamination
7.
on the CMOS sensor cover glass. (Note that the image on the monitor should not
saturate due to over exposure - if necessary close the iris even further).
If the CMOS sensor is not clean, repeat steps 4 - 7 using a new Q-tip. After three unsuccessful
8.
tries, it is advised to wait a few minutes before a new attempt is made to clean the CMOS sensor.
(The waiting time allows the electric charge that has been built up during cleaning to neutralize).
