We see temperature and temperature differences!!!
9
CG320 & CG640 Manual
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Recommendation in use
1. After adjust focus of lens on the object at a certain distance, do not change focus open.
2. Read pages after 8 of this manual before starting OSD menu setting, if user is not familiar with
CG300 or CG600 cameras.
3. NUC time interval must be set properly to get good quality of image. Shorter NUC time interval is
recommended in bad weather days (rainy, snowy, and cloudy) and before the dawn in winter (refer
to page 19 for NUC set-up).
4. Images users see is not created based on visible light as CCTV cameras but created based on infrared
ray radiated from objects, which humans cannot see.
Therefore thermal camera image is much different from images with which humans are very familiar.
In Grey tone color image, higher temperature parts are expressed in white color and low temperature
parts are in black. If there are any IR ray reflective objects (humans can not recognized) in the area
of image, it will make image in the monitor much different from what user expects.
5. Looking at the sun directly or open to series of flashes created very high temperature object will be
harmful to normal operation of thermal camera. Do not install thermal camera staring directly at the
sun, and execute NUC manually if thermal camera stared directly at the sun for a certain period of
time in the process of installation.
6. Check lens if it is clean without dirties or dusts after a certain time of use. Dirties and dusts on the
lens will cause poor image. Use cleaning agent and soft cloth used for cleaning of glasses for humans
to clean IR lenses.
7. Distance to objects humans can detect in the image may change a lot according to environment
(temperature, snow, rain, fog, wind, humidity). In bad weather condition, distance for detection,
recognition, and identification shall be decreased much.
8. Use thermal camera always in acceptable atmosphere. (Refer to page 1 and 42)