IOS EtherWave User’s Guide
ioSelect Inc.
31-Aug-09
Page 4 of 13
1-858-537-2060
Introduction
Thank you for your purchase of the EtherWave IP Addressable Outdoor 900 MHz Wireless Ethernet
Transceiver. If you have any questions when configuring your ioSelect system, the best place to get
answers is to visit
www.ioselect.com
. You will also find the latest updates there.
If more assistance is needed, send email to
, or to speak to a live technician,
please call technical support at the number below during normal business hours.
Overview
The EtherWave radio allows the user to create a long-range, wireless Ethernet network with up to
16 subscriber units per access point, 12 access points in a given RF area (1 per RF channel), and 64
routable MAC addresses per Access Point. So many Ethernet devices can be connected to a single
subscriber unit as long as there are no more that 64 devices (MAC addresses) per access point.
Configuring a wireless link with the EtherWave requires the following elements:
Each radio must know whether it is to be an access point (AP) or subscriber unit (SU).
The AP must know how many SUs are expecting communication with it.
The AP and any given SU must agree on which radio frequency channel they are
using. This can be manually set or allowed to change automatically.
The SU must be assigned a unique subscriber ID to specify which time division slot it
will use when communicating with the AP.
The AP and any given SU must share a common 128-bit encryption key.
Each radio must have an IP address that is unique among all others on the same
network. This assumes two things:
1.
You want to access the webpages of the various radios at some point
2.
You have a device connected to any radio that will have an address of
192.168.17.17 (Default shipped IP address of EtherWave radios)
If NONE of these things are true, then the radios can be deployed using the “Key
Exchange Method” described later and everything will work fine.
EtherWave radios may be configured by two different methods:
Key Exchange Method - Using Ethernet cable, DIP switches, and LEDs on the module.
Web browser - Setting parameters via the built-in browser interfaces.
Any EtherWave configured as an access point (AP) automatically scans for the best of the 12
available radio frequency channels, encrypts Ethernet data received from the network, and
transmits it wirelessly to the correct subscriber unit (SU). The AP is constantly monitoring the radio
link and can automatically change the channel if performance is degraded due to interference. If
two AP units are very close to one another, they may interfere if operating on adjacent frequency
channels. Place them at least 10 feet apart or manually select non-adjacent channels for their
operation. Also, the SU should be placed at least 10 feet from the AP to avoid overloading the
radio’s receiver.
