FreeWave Technologies Inc. 1521131FFF Manuale Utente

 Spread Spectrum Wireless Data Transceiver User Manual 

LUM0002AG Rev A 

Version 7.0 

40 

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. 

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.  

Edit MultiPoint Parameters                                                                                                          

Selecting (5) Edit MultiPoint Parameters from the main menu displays the following window: 

 

 

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. 

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