Stage 3: Rf Survey; Rf Planning For Dense Installations And Collocated Sites - Radwin WinLink 1000 User Manual

Stage 3: RF Survey

• For IDU-C units, allow at least 90 cm (36 ") of front clearance for operating and main-
tenance accessibility. Allow at least 10 cm (4 ") clearance at the rear of the unit for
signal lines and interface cables
• The ambient operating temperature should be 0 to 50°C (32 to 122 °F) at a humidity
of up to 90%, non condensing
Stage 3: RF Survey
The RF survey examines the wireless environment of the installation site, to determine
whether there are available channels within the radio operating frequency band. An RF survey
is performed using a spectrum analyzer.
It is advisable to familiarize yourself with the spectrum analyzer before going out on site, spe-
cifically the Max Hold and Marker functions.
You should perform the RF survey at both proposed link sites.
The survey should be carried out during a busy time of day, to best judge the worst-case
radio interference. Allow 2-4 hours duration for a good RF survey.
It is possible to install the link and use the RADWIN Manager to find a clear
channel. Each frequency channel can be evaluated in turn. Achievement of a
clear channel is indicated by the marker in the Quality bar on the Channel
Note
Setting window (see

RF Planning for Dense Installations and Collocated Sites

Interference may arise from
• Self interference from collocated RADWIN radios
• Other collocated radio devices installed on the same site.
To avoid or minimize interference, follow these recommendations:
• For collocated RADWIN units, use an HSS unit to synchronize between them. Select a
different operating channels for each collocated RADWIN unit.
• If one or more collocated units are not RADWIN units, ensure that there is a physical
separation of at least three meters between a RADWIN unit and any other collocated
radio on the site.
• Use the largest possible frequency gap between these units.
• Choose the best frequency channel (as clear as possible form interference). You may
change band with "Combo" WinLink 1000 products and all RADWIN 2000 products).
• To select a frequency channel, move the link to Installation Mode (using Site con-
figuration) and start the Installation wizard. In the Channel Settings window, use
the quality bar at the bottom to help you choose a better channel (clearer of interfer-
ence).
• If you are using WinLink 1000 radios, install the collocated links with different antenna
polarizations.
• If you are using the RADWIN 2000 radios, use the Spectrum View tool to find the
best working channel (Tools | Spectrum View).
WinLink 1000 User Manual
Figure 5-6) moving into the green area.
Release 1.9.40
Chapter 2
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