User guide

ManualsBrandsMotorola ManualsOther5440SM - Canopy 5.4 GHz Subscriber Module

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Canopy System User Guide Configuring a BH Timing Master for the

Destination

pmp-0229 (Mar 2013)

337

Schedule Whitening

Select either

• Enable, to spread the transmitted signal power to avoid peaks that modules with Dynamic

Frequency Selection (DFS) configured might interpret as radar. This is the recommended

setting.

• Disable, to allow peaks in transmitted signal power.

PTP 200 Series (OFDM) BHMs do not support this parameter.

Transmit Frame Spreading

If you select Enable, then a BHS between two BHMs can register in the assigned BHM (not the

other BHM). Cambium strongly recommends that you select this option. With this selection, the

BHM does not transmit a beacon in each frame, but rather transmits a beacon in only pseudo-

random frames in which the BHS expects the beacon. This allows multiple BHMs to send beacons

to multiple BHSs in the same range without interference.

Transmitter Output Power

Nations and regions may regulate transmitter output power. For example

• 5.7-GHz modules are available as connectorized radios, which require the operator to adjust

power to ensure regulatory compliance.

• Legal maximum allowable transmitter output power and EIRP (Equivalent Isotropic Radiated

Power) in the 2.4-GHz frequency band varies by country and region. The output power of

Series P9 2.4-GHz modules can be adjusted to meet these national or regional regulatory

requirements.

• Countries and regions that permit the use of the 5.4-GHz frequency band (CEPT member

states, for example), generally require equipment using the band to have adjustable power. In

the PTP54200 OFDM BHM, transmitter output power is settable in the range of −30 to 15

dBm. However, with only the integrated antenna, where regulation

requires that EIRP is not

greater than 27 dBm, compliance requires that the transmitter output power is set to 10 dBm

or less. With a 12 dBi external antenna on the connectorized version of this BHM, the full

range (up to 15 dBm) is acceptable.

The professional installer of the equipment has the responsibility to

• maintain awareness of applicable regulations.

• calculate the permissible transmitter output power for the module.

• confirm that the initial power setting is compliant with national or regional regulations.

This is the case in most regions, including the U.S.A., Europe, and Canada.