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

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