Crestron ZUMMESH-JBOX-20A-PLUG handleiding

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Best Practices – DOC. 6689H Installation and Setup of Crestron RF Products • 11

As a result, the nonoverlapping channels of 1, 7, and 13 are the recommended

channels for use in Europe, Japan, and most countries excluding the United States,

as shown in yellow in the “2.4 GHz Wireless Network” illustration on page 3.

All Wi-Fi channels provide the same operational range; however, Extended Range

and infiNET EX channels on the high and low end of the band have a reduced

range.

Conducting a Site Survey

A wireless site survey consists of detecting the level and distribution of outside interference.

A site survey often provides early detection of any issues that might be encountered in the

installation and, to a large extent, dictates which wireless channels can be used in the

installation. The goal of a site survey is to discover the worst-case interference scenario.

Site Survey Tools

The Wi-Spy

, Chanalyzer

, and InSSIDer

(http://www.metageek.net) software tools are

recommended for performing a site survey.

Wi-Spy is an RF spectrum analyzer built into a small USB dongle that plugs into a PC. It

detects the amount of interference across the 2.4 and 5 GHz bands. Four versions are

available: Wi-Spy2.4x and Wi-Spy 2.4x Pro are for the 2.4 GHz band. The 2.4x Pro version

provides better signal resolution for improved detection, finds unknown devices, and creates

reports based upon its findings. Wi-Spy DBX and DBX Pro monitor the 2.4 and 5 GHz

bands; the DBX Pro version provides the same enhanced features as the 2.4x Pro device.

Wi-Spy*

Wi-Spy 2.4x*

Wi-Spy devices use the Chanalyzer or InSSIDer software to report RF signals. The software

can detect other wireless networks as well as 2.4 GHz cordless phones, baby monitors, and

microwaves.

NOTE: Due to the large amount of interference that can come from 2.4 GHz cordless

phones, baby monitors, and microwaves, it is recommended that a Wi-Spy device be used

to perform wireless site surveys.

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