SEL-3031 Instruction Manual Date Code 20181001
Installation
Overview
2.6
Figure 2.2 Antenna Polarization
➤ Multiple SEL-3031 systems can coexist in close proximity with
minimal interference through the use of the built-in synchronism that
allows you to synchronize collocated radios. The radios can be
synchronized to transmit simultaneously to prevent interference from
adjacent radios. See Radio Settings on page 4.12 to learn more about
synchronizing radios.
➤ When constant interference is present in a particular frequency zone,
it may be necessary to “lock out” that zone from the SEL-3031
hopping pattern. The SEL-3031 includes a SKIP setting that removes
interfered frequency zones from its hopping pattern. See Table 4.5 for
more information on the skip zones and information on how to set the
SKIP setting. In the USA, Canada, Colombia, and Mexico, a
maximum of six zones may be skipped, per regulatory agency rules.
Check the regulatory requirements for other countries.
➤ The RF power output for all SEL-3031 radios in your system should
be set to the lowest level necessary for reliable communications. This
decreases the likelihood of causing unnecessary interference to
nearby systems. See Table 2.3 and Table 2.4 for more information on
the different frequency zones.
Vertical Polarization
Horizontal Polarization
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