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To Re-key a Subscriber Unit to a New Access Point
Use the following procedure to re-key an SU to an AP:
1. Select the radio that will operate as the AP and set DIP switch 1 ON to enable Access Point
operation.
2. Plug in the new AP.
3. Connect an Ethernet cable from the AP to the SU (key exchange will not work through a switch
or hub – crossover cables are not required).
4. Plug in the SU.
5. Repeat steps 3 and 4 until all SUs are successfully programmed.
6. Power cycle all radios for the new keys to take effect.
7. Deploy the radios.
DIP Settings
DIP 1
AP or SU
• By selecting DIP 1 ON, the radio will operate as an AP.
• By selecting DIP 1 OFF, the radio will operate as an SU.
DIP 2
<Manufacturer test mode - no end user functionality>
DIP 3-8
Automatic frequency selection mode (DIP 3-8 OFF for automatic mode):
The XEB radios are designed to automatically select and continuously optimize the performance of
their radio channel with frequency agility techniques. The radio channel is monitored to ensure it is
providing low error rates necessary for successful data transmission. In the event that the error rate
rises, the AP will automatically change to a new channel. The SUs will follow. There are 12 non-
overlapping channels.
Frequency agility is turned on by default. It is recommended because it offers an RF communication
channel that is highly resilient to interference. For example, in VOIP and CCTV applications, wideband
technologies like Wi-Fi can get slowed or stopped by heavy interference. The XEB, in contrast, has
more consistent throughput due to its narrow bandwidth at a higher power output, plus frequency
agility to move to an unused section of the frequency band.
Manual frequency selection mode:
The operation of the XEB radios can be restricted to a specific channel within the 902-928 MHz band
by setting DIP switches 3-8 on the AP as shown in the table below. The SU responds to the AP’s choice
of channel, and its DIP switch has no effect and does not need to be selected.
Channels and Settings
Channel DIP Setting Center Frequency
1 3 On / 4 Off / 5 Off / 6 Off 903.12500 MHz
2 3 Off / 4 On / 5 Off / 6 Off 905.20833 MHz
3 3 On / 4 On / 5 Off / 6 Off 907.29167 MHz
4 3 Off / 4 Off / 5 On / 6 Off 909.37500 MHz
5 3 On / 4 Off / 5 On / 6 Off 911.45833 MHz
6 3 Off / 4 On / 5 On / 6 Off 913.54167 MHz
7 3 On / 4 On / 5 On / 6 Off 915.62500 MHz
8 3 Off / 4 Off / 5 Off / 6 On 917.70833 MHz
9 3 On / 4 Off / 5 Off / 6 On 919.79167 MHz
10 3 Off / 4 On / 5 Off / 6 On 921.87500 MHz
11 3 On / 4 On / 5 Off / 6 On 923.95833 MHz
12 3 Off / 4 Off / 5 On / 6 On 926.04167 MHz
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