Uniden UBW2101 사용자 설명서

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About Digital Wireless Technology 
This section offers some helpful information to overcome most problems you  
may encounter. 
Problem Diagnosis
 
About 2.4GHz Digital Wireless Signal 
This innovative digital wireless solution integrates advanced Frequency Hopping 
Spread Spectrum (FHSS) technology. This technology greatly reduces the  
interference that comes from other devices using the same radio frequency  
(2.4GHz), e.g. WIFI, Bluetooth, cordless phone...etc. You can now experience  
improved wireless surveillance quality without flicker and noisy images.  
However, weaker signals (lag or still image) may be observed from time to  time, 
depending on the environment where the system is installed. Complies with FCC 
part 15.247, ETSI (EN) 300 328; audio/video signals transmitted out up to about 
500 foot (150 meters) line of sight can be supported. Line of sight installation 
though, is usually not a common practice.  Factors affecting the transmission 
include microwave ovens or other high frequency electromagnetic waves. 
Reinforced concrete walls, large scale metal products, and metal furniture should 
not be located near the camera or the monitor unit. Do not place near water. 
Person walking by may cause unstable signal quality. 
How to improve the wireless signal quality  
If possible, remove obstacles in between the camera or the monitor that might 
reflect the signal. These could include furniture, cabinets, etc. If you feel the 
wireless signal is not good enough, place the monitor at a new angle, readjust 
its position to make an improvement, or simply move the camera closer to the 
monitor. 
Why Image Compression? 
In order to provide a private and interference free wireless service, this 
digital wireless solution works on a 2MB narrow hopping band. Different from  
traditional 2.4GHz analog signal, this digital wireless signal is compressed and  
presented as Motion JPEG (MJPEG) format. By digitizing and compressing 
the raw analog data, the bandwidth is used more efficiently and securely.  
Consequently, you might observe an indent image line if the signal is viewed  on 
a larger display monitor or plasma TV.