User's Manual

Advanced Settings:
Automatic frequency selection mode (DIP switches – all OFF for automatic mode)
The AW900m is designed to automatically select and continuously optimize the performance
of its radio channel. The radio channel is monitored to ensure it is providing low error rates
necessary for successful radio transmission. In the event that the error rate rises, the
AW900m will autonomously change to a new channel. There are 12 non-overlapping
channels.
Manual frequency selection mode
To restrict the operation of the AW900m to a subset of the 902-928 band, the user may
activate a manual selection mode that allows the radio to automatically choose the best
channel within a grouped subset of the 12 available channels. This is enabled by the 8
position DIP switch on the master unit. These settings allow the AW900m to operate on the
optimal channel in one of three subsets, LOW 4, MID 4 or HIGH 4. The DIP switch setting
are:
Channels DIP Settin
g
Fre
q
uenc
y
LOW 4 - 1,2,3 or 4
2 On / 3 Of
f
903-909 MHz
MID 4 - 5,6,7 or 8 2 Off / 3 On
911-917 MHz
HIGH 4 - 9,10,11 or 12 2 On / 3 On
919-925 MHz
Or - the user may wish to select a specific channel. This can be done by setting DIP
switches 5-8 as shown in the table below. [Turn DIP 2 Off / 3 Off]
Channel DIP Settin
g
Fre
q
uenc
y
1
5 On / 6 Off / 7 Off / 8 O
f
f
903 MHz
2 5 Off / 6 On / 7 Off / 8 Off
905 MHz
3 5 On / 6 On / 7 Off / 8 Off
907 MHz
4 5 Off / 6 Off / 7 On / 8 Of
f
909 MHz
5 5 On / 6 Off / 7 On / 8 Off
911 MHz
6 5 Off / 6 On / 7 On / 8 Off
913 MHz
7 5 On / 6 On / 7 On / 8 Off
915 MHz
8 5 Off / 6 Off / 7 Off / 8 On
917 MHz
9 5 On / 6 Off / 7 Off / 8 On
919 MHz
10 5 Off / 6 On / 7 Off / 8 On
921 MHz
11 5 On / 6 On / 7 Off / 8 On
923 MHz
12 5 Off / 6 Off / 7 On / 8 On
925 MHz
Site survey mode (DIP switch 4 - default is OFF for normal operation)
In this mode the AW900m can perform a site survey. With this mode activated the radios
send and receive at 100% capacity by transceiving self-generated simulated data. The
installer can monitor the Link Quality display to assess channel quality while optimizing
antennae orientation. The installer can manually select each channel to evaluate
performance and identify the best channels for operation. By identifying channels with poor
performance it is possible to identify possible interferers and use “manual frequency
selection mode” to avoid portions of the band or select a fixed operating frequency.
Important note: Ethernet traffic does not get transported while the radios are in this mode.