User Guide

PMP 450 Planning Guide
The Radio tab of the AP contains some of the configurable parameters that define how the AP operates.
Table 6 AP Radio attributes
Attribute Meaning
Radio Mode Reserved for future modes of operation.
Frequency Band Select the desired operating frequency band.
Frequency Carrier Specify the frequency for the module to transmit. The default for this
parameter is None. For a list of channels in the band, see the drop-down list
on the radio GUI.
Channel Bandwidth The channel size used by the radio for RF transmission. The setting for the
channel bandwidth must match between the AP and the SM. Note: Release
12.1 introduces the Band Scan feature which will allow the SM to scan all
Channel Bandwidths.
Cyclic Prefix OFDM technology uses a cyclic prefix, where a portion of the end of a symbol
(slot) is repeated at the beginning of the symbol to allow multi-pathing to
settle before receiving the desired data. A 1/16 cyclic prefix means that for
every 16 bits of throughput data transmitted, an additional bit is used.
Color Code Specify a value from 0 to 254. For registration to occur, the color code of the
SM and the AP must match. Color code is not a security feature. Instead, color
code is a management feature, typically for assigning each sector a different
color code.
Color code allows you to force an SM to register to only a specific AP, even
where the SM can communicate with multiple APs. The default setting for the
color code value is 0. This value matches only the color code of 0 (not all 255
color codes).
Max Range Enter a number of miles (or kilometers divided by 1.61, then rounded to an
integer) for the furthest distance from which an SM is allowed to register to
this AP. Do not set the distance to any greater number of miles. A greater
distance
• does not increase the power of transmission from the AP.
• can reduce aggregate throughput.
Regardless of this distance, the SM must meet the minimum requirements for
an acceptable link. If the AP is in cluster, then you must set this parameter on
all other APs in the cluster exactly the same, except as described in the NOTE
admonition below. The default value of this parameter is 2 miles (3.2 km).
1-22
pmp-0047 (March 2014)