User`s guide

Table Of Contents

SEM2410

more than maxslaves slave SEMs attempt to connect to the access point, they

will be denied access.

network The radio in the SEM has 64 preprogrammed hopping patterns or network

numbers. By using different network numbers, nearby co-located networks can

avoid interfering with each other’s transmissions. Even if both networks tried to

use the same frequency, on the next hop they would be at different frequencies.

nwt can range from 0 to 63.

power This command sets the transmit output power level of the SEM radio. The default

is 1 which corresponds to +18dBm or 65 milliWatts. The other setting is 0 which

corresponds to +10dBm or 10 milliWatts. This command is useful in the

European Union where the transmit power is limited to +20dBm including

antenna gain. Setting the transmit power to +10dBm allows up to 10dBi of

antenna gain to be used.

show This command displays a list of the current radio parameters including the

network number, maxremotes and the sys outmax value.

spid The SEM has 64 different network numbers (hopping patterns) allowing multiple

networks of SEMs to be co-located while keep the networks segregated. In some

situations, particularly in outdoor deployments, there may be other entities using

SEMs. In most cases, the network number will be sufficient to keep the networks

separate. However, it may not be possible to coordinate network numbers with an

unknown third party. In this instance, the service provider ID or

spid provides an

additional 255 codes to distinguish networks. This feature is particularly useful if

the slave SEMs are setup to connect to the first master they hear. While they can

link with a SEM with any network number, they cannot link with a SEM with the

wrong

spid.