Hawking Hi-Gain HWU54DM, Руководство пользователя

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13. What is Spread Spectrum
?
Spread Spectrum technology is a wideband radio frequency technique developed by the military
for use in reliable, secure, mission -critical communication systems. It is designed to trade off
bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is
consumed than in the case of narrowband transmission, but the trade off produces a signal that
is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of
the spread-spectrum signal b eing broadcast. If a receiver is not tuned to the right frequency, a
spread –spectrum signal looks like background noise. There are two main alternatives, Direct
Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).
14. What is Hi-Gain and dBi?
H i-Gain is Hawking Technologies high performance wireless distance extending product line. It
encompasses a group of products and technologies used to help solve distance issues
accompanied with WiFi products. A unit of measurement on antenna strength and power is dBi.
The higher the dBi or gain level of an antenna the more powerful it is.
15. What is the difference between directional and omni-directional antennas?
Directional and omni -directional antennas determine the wireless output pattern of antennas.
In standard installations it is normally the wireless access point that uses the omni-directional
antenna (360 degree wireless output) while the clients (desktop or laptops) that use the
directional antennas (concentrated narrow wireless signal) to create a stronger link directly to
the access point.
16. How do I get an Optimal Wireless Connection with the HWU54DM?
If pointing the antenna directly at the access point is not providing a sufficient signal connection
then you can try bouncing the signals off walls. Wireless signals can reflect off walls or through
windows to get to their desired location so try different positions to find the best antenna
orientation for your network.