WSDA
®
-Base-104
®
USB Base Station
User Manual
Gateway Communication and Settings
28
4.6
Transmit Frequency
The transmit frequency of the wireless sensor network refers to the communication link
between the gateway and the node. There are 14 available frequency channels between 2.405
and 2.470 GHz.
NOTE
l
The gateway can automatically manage nodes operating on different
frequencies by using the Node Discovery feature in Node Commander
®
. In
this routine, the gateway listens for node broadcasts on the frequency
channel to which it is set. If the node is in normal boot-up mode, it will provide
the broadcast when it is initially powered- on, and it will broadcast on all
channels. As long as the node is powered- on after activating the Node
Discovery feature, the gateway will link to it and remember the channel
setting for future node queries.
l
Manually matching the node and gateway frequency channels is required in
some applications. For example, when sending broadcast messages from
the gateway to multiple nodes (including the synchronized sampling beacon)
all nodes must be on the same channel as the gateway in order to receive the
broadcast. Assigning channels is also a good idea when multiple gateways
are attached to one host computer or when other wireless equipment is
nearby and frequency or transmission interference may occur.
The frequency setting for the gateway can be changed from the Configure menu. .
Figure 22 - Gateway Frequency
