© Microhard Systems Inc. Confidential 79
5.0 Point to Multipoint Configuration
Hop Zones
Register S180: Hop Zone and S181: Secondary Zone, select the available frequency zones used by
the Pico Series, as there may be times when multiple systems are deployed within close proximity, or
there may be outside interference or noise that requires sections of the available spectrum to not be
included in the Hop Pattern generation.
S180 = 0 - Primary Zone (0=Use Entire 902-928 ISM Band)
S181 = 0 - Secondary Zone
The Primary Hop Zone, S180 is applied to the Primary Hop Pattern (S106). The Secondary Hop Zone,
is applied to the Secondary Hop Pattern (S206), when determining the hop pattern for each segment of
the system.
Several Hop Zones are predefined by querying the S180 Register as seen below. The ranges listed are
the frequency ranges that are available to create the hop table. Using Hop Zones several frequency
Bands can be excluded. Also if multiple systems are being deployed within close proximity, Hop Zones
can be used to minimize overlap in the frequencies used to populate the Hopping Pattern.
Image 5-8: Hop Zones
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