About Digital Wireless Technology - SCS DWS Manuel D'installation Et D'utilisation

ABOUT DIGITAL WIRELESS TECHNOLOGY

This section offers some helpful information to solve most of the problems you may
encounter. We hope this section can help you to enjoy a pleasant setup.
About 2.4GHz Digital Wireless Signal
This innovative digital wireless solution integrates advance Frequency Hopping Spread
spectrum (FHSS) technology. This technology greatly reduce the interference that comes
from other devices using the same radio frequency (2.4GHz), e.g. WIFI, Bluetooth,
Zigbee, cordless phone...etc. You now can enjoy a more pleasant wireless surveillance
quality without flicking and noisy image. However, weaker signal (lag or still image) can
be observed yet from time to time, depending on the environment where the system is
installed. Complied with FCC part 15.247,ETSI(EN)300 328, audio / video signals
transmitted out about or over 500 foot / 150meter in line of sight should be supported.
Line of sign installation, though, is usually not a common practice. Factors affecting
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 receiver. Water creates an obstacle and should not be
placed near. Human bodies such as a person passing through may cause unstable signal
quality
How to improve the wireless signal quality?
If possible, remove obstacles in between camera and receiver that might reflect the signal.
These could include furniture, cabinets, and walls. If you feel the wireless signal is not
improvement, please relocate the camera closer to the receiver.
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 digitalizing and compressing the raw analog data, the bandwidth is used more
efficiently and securely. Consequentially, you might observe an indent image line on a
larger display receiver or plasma TV.
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