5 General Considerations
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5 General Considerations
5.1 Spectrum Planning
The PTP 500 Series Bridge has two frequency variants in its product range.
Variant Definition Frequency Coverage Variable
Channel
Width
Channel
Raster
PTP
54500
ETSI 5 GHz Band B
FCC UNII Band
5470-5725 MHz 5, 10, 15
MHz
5 MHz
PTP
58500
ETSI Band,
FCC ISM Band
5725-5875 MHz (ETSI) and
5725-5850 MHz (FCC)
5, 10, 15
MHz
5 MHz
Table 5 - PTP 500 Series Bridge Frequency Variants
NOTE: For PTP 54500 and PTP 58500, use of the product is allowed according to local
regulations.
There are two distinct approaches to spectrum planning:
• First an operator can utilize the default spectrum management mode i-DFS (intelligent
Dynamic Frequency Selection). This mode uses the PTP 500 Series Bridge ability to
measure the interference levels in all channels to build up a picture of the interference /
noise levels in all channels. The PTP 500 Series Bridge uses statistical techniques to
select the most appropriate transmit and receive channels. The i-DFS mode can be
influenced in its channel decision process by selectively barring channels from use. The
use of this functionality is described in detail in Section 8.3.7 “Spectrum Management”.
• Second, when detailed control of the spectrum allocation is required, it is recommended
that the fixed frequency mode is used to statically allocate transmit and receive channels.
WARNING:This approach must not be used when Radar Detection is enabled.
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