Weidmuller WI-MOD-945-E: 900Mhz Wireless Ethernet & Device Server v2.16 - Manual (Page 39)

Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 39 www.weidmuller.com Rev 2.136
3.9 - Advanced Radio Configuration
Some of the more advanced radio settings have been moved from the normal Radio configuration page so as to simplify
the configuration process.
Care should be taken when making changes to parameters on this page.
Figure 24 - Advanced Radio
TX Antenna Select which antenna port the module will transmit from. Selections available
are
Main Port Only – Messages are transmitted from the main “TX/RX” port, The
Auxiliary port “RX” is disabled.
Both (Diversity) – Both ports will be used to transmit however not at the same
time; it calculates the best port based on previous transmissions and MAC
addressing. Note: Broadcast / UDP transmission messages will initially toggle
between the antenna ports, and could result in every second message not
being heard until the module learns which device can be reached through
which antenna port.
Aux Port Only – Messages will be transmitted via the Auxiliary “RX” port only
RX Antenna Same as for TX Antenna above but for the Receiver port. Setting to “Both
(Diversity)” will allow a high gain antenna to be connected to the Auxiliary “RX”
port which will give better RX signal gain but not increase the TX gain and
possibly pushing it over the regulatory EIRP threshold.
DTIM Period (AP only) DTIM sets which beacon frames incorporate extra information for low power
sleeping client devices. Normally set this to 1.
RTS Threshold
“Ready To Send”
RTS frames can be used to help avoid radio collisions between two stations
that cannot directly hear each other. Any frame larger than RTS Threshold
bytes will be preceded by an RTS message. The default value of RTS
Threshold is 2346, which effectively disables RTS signaling, as this value is
larger than the maximum frame size (Fragmentation Threshold).
Fragmentation
Threshold (Client Stations only). The maximum transmission unit (MTU) of data over the
radio. If more than this number of bytes is input into the module, it will be
transmitted in more than one message (or fragmented).