WSDA
®
-Base-104
®
USB Base Station
User Manual
Gateway Communication and Settings
33
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 27 - Gateway Frequency