Page 22 - Security Today, October 2017

Level
Solid Particle Protection
Levels
Liquid Ingress Protection
Effective against solids larger than...
Protection against...
0
None
0
None
1
50mm
1
Dripping water
2
12.5mm
2
Dripping water, tilted up to 15°
3
2.5mm
3
Spraying water
4
1mm
4
Splashing of water
5
Dust protected
5
Water jets
6
Dust tight
6
Powerful water jets
6K
Powerful water jets with increased pressure
7
Submerged, up to 1m
8
Submerged, 1m or more
9K
Powerful high temperature water jets
IP Rating Table with code description and details.
Useable Distance and Bandwidth
There are many factors that can affect the useable distance and band- width of wireless bridge solutions. Physical obstructions, radio inter- ference, and physical placement all play important roles. Carefully select mounting location and height to avoid physical obstructions. The site survey you conducted will help you avoid interference from other devices and determine the ideal locations.
In regards to radio interference, the 2.4GHz band is the most commonly used and often the most saturated radio frequency. In ad-
dition to wireless access points, many other common devices operate on the same 2.4GHz radio frequency, such as cordless phones, baby monitors, microwave ovens, and car alarms. Try using a different channel, moving the AP to a location with little to no interference, or use an AP that supports the less congested 5GHz band. Remember that a site survey is required to help you choose the best location.
Distance or wireless range can also be increased by using a lower performing wireless band, however wireless n is the lowest wireless band you’ll want to use for today’s applications. Distance is also dic-
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