FreeWave Technologies Inc. 1521131FFF ユーザーズマニュアル
Spread Spectrum Wireless Data Transceiver User Manual
LUM0002AG Rev A
Version 7.0
40
MultiPoint Parameters
When installing MultiPoint networks it is important to do some up front planning. Unlike Point-to-Point
networks, a Point-to-MultiPoint network requires several parameters are set consistently on all
transceivers in the network. This includes RF data rate, Min and Max Packet Size, and FreqKey.
networks, a Point-to-MultiPoint network requires several parameters are set consistently on all
transceivers in the network. This includes RF data rate, Min and Max Packet Size, and FreqKey.
Note: If several independent MultiPoint networks are to be located in close proximity the planning
becomes more critical. In such cases, it becomes very important to include as much frequency
and time diversity as possible through use of different FreqKey, Min and Max Packet Size, and
Hop Table settings. In some instances the use of the MultiMaster Synch option may be required.
and time diversity as possible through use of different FreqKey, Min and Max Packet Size, and
Hop Table settings. In some instances the use of the MultiMaster Synch option may be required.
Edit MultiPoint Parameters
Selecting (5) Edit MultiPoint Parameters from the main menu displays the following window:
(0)
N
UMBER
R
EPEATERS
In a MultiPoint network it is critical to transmission timing to configure this parameter correctly. The value
should be 0 if no Repeaters are in the network and 1 if any number of Repeaters are present. This
parameter should be set to the same value in all transceivers in a MultiPoint network. Number Repeaters
needs to be set to 1 when running Diagnostics from the Master.
should be 0 if no Repeaters are in the network and 1 if any number of Repeaters are present. This
parameter should be set to the same value in all transceivers in a MultiPoint network. Number Repeaters
needs to be set to 1 when running Diagnostics from the Master.
(1)
M
ASTER
P
ACKET
R
EPEAT
In a Point-to-MultiPoint network, Slaves do not acknowledge transmissions from the Master. If Slaves did
acknowledge all data transmissions, in a large network, the Master would soon become overwhelmed
with acknowledgments from the Slaves. Without acknowledgements, 100% confidence every Slave has
received every packet cannot be met. To address this issue, the user may modify the Master Packet
Repeat setting, assigning a value between 0 (the packet is transmitted once) to 9 (the packet is
acknowledge all data transmissions, in a large network, the Master would soon become overwhelmed
with acknowledgments from the Slaves. Without acknowledgements, 100% confidence every Slave has
received every packet cannot be met. To address this issue, the user may modify the Master Packet
Repeat setting, assigning a value between 0 (the packet is transmitted once) to 9 (the packet is