User guide

Configuring an AP for the Destination Configuring for the Destination
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pmp-0229 (Mar 2013)
The default of 2 repeats is optimum for typical uses of the network as an internet access system. In
applications with heavy download broadcast such as video distribution, overall throughput is
significantly improved by setting the repeat count to 1 or 0. This avoids flooding the downlink
with repeat broadcast packets.
External Filters Delay
This parameter is present in only 900-MHz modules and can have effect in only those that have
interference mitigation filter(s). Leave this value set to 0, regardless of whether the AP has an
interference mitigation filter.
Transmit Frame Spreading
The following description applies to APs in frequency ranges other than 900-MHz.
Where multiple AP clusters operate in the same frequency band range and same geographical area,
select Enable. Then SMs between two APs can register in the assigned AP (do not register in
another AP).
Where multiple AP clusters do not operate in the same frequency band range and same
geographical area, select Disable, but observe the following caveat.
IMPORTANT!
SM throughput is 10% greater with this feature disabled. However, if you disable
Transmit Frame Spreading where this feature was previously enabled, monitor
the zone for interference over a period of days to ensure that this action has not
made any SMs sensitive to the wrong beacon.
With this selection enabled, the AP does not transmit a beacon in each frame, but rather transmits
a beacon in only pseudo-random frames in which the SM expects the beacon. This allows multiple
APs to send beacons to multiple SMs in the same range without interference.
Transmitter Output Power
Nations and regions may regulate transmitter output power. For example
• 900-MHz, 2.4-GHz, and 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.