OTC Wireless AVCW-G Technical Manual
AVCW-G
Wireless Ethernet Adapter
Technical Manual
www.otcwireless.com
ii
AVCW-G
Wireless Ethernet Adapter
Technical Manual
Copyright
Information in this document is subject to change without notice. Complying with
all applicable copyright laws is the responsibility of the user. No part of this
document may be reproduced or transmitted in any form or by any means,
electronic or mechanical, for any purpose, without the express written permission
of the seller. If, however, your only means of access is electronic, permission to
print one copy is hereby granted.
The seller provides this documentation without warranty, term, or condition of any
kind. The seller may make improvements or changes in the product(s) and/or the
program(s) described in this documentation at any time.
Other product and company names herein may be trademarks of their respective
owners.
Copyright 2001-2003 OTC Wireless, Inc. All rights reserved.
Rev 1.00 August 12, 2003
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Table of Contents
AVCW-G Technical Manual
Table of Contents.............................................................................................................iii
Chapter 1 Introduction.....................................................................................................1
AVCW-G Radio.............................................................................................................. 2
Specifications.................................................................................................................. 2
Chapter 2: Hardware Installation...................................................................................3
Safety Statements............................................................................................................ 3
Power .............................................................................................................................. 3
Ethernet connection......................................................................................................... 4
Status LEDs ..................................................................................................................... 4
System Requirements for Web-based Utility program................................................... 5
Chapter 3 Web-Based Utility Software...........................................................................6
Use the Web-Based Utility Program............................................................................... 6
Overview of the Web Pages............................................................................................ 6
Basic Information............................................................................................................ 7
Wireless........................................................................................................................... 9
Security......................................................................................................................... 10
Advance ........................................................................................................................ 12
Admin............................................................................................................................ 14
Help ............................................................................................................................... 17
Chapter 4 Troubleshooting ............................................................................................18
No Page Displayed When Accessing the Web-based Utility....................................... 18
No Radio Link............................................................................................................... 18
No Network Connection While the Radio Link is Good.............................................. 18
Poor Link Quality.......................................................................................................... 19
Radio Interference......................................................................................................... 19
TFTP Timeouts ............................................................................................................. 20
Settings Appear not to be Modified .............................................................................. 20
Technical Support......................................................................................................... 20
Appendix A: Limited Warranty....................................................................................21
Appendix B: Regulatory Compliance ..........................................................................22
1
Chapter 1 Introduction
AVCW-G is an IEEE-802.11g compliant wireless Access Point (AP) that offers a
no-frill, seamless way of fitting a wirel ess network into an existing wired LAN
infrastructure. It does not even require the assignment of an extra IP address.
Existing wired-network resources such as DHCP, VPN, firewall, etc., reach
across the AVCW -G to the client workstations with total transparency. Unlike
many other 802.11g compliant APs on the market, which offer network functions
that are duplicative to the existing network, AVCW -G simply wirelessly collects a
group of workstations or other kinds of computing devices into the existing
network—just like a hub or a switch.
The portable, compact form-factor of AVCW -G, in conjunction with its no-frill AP
functionality, makes it ideal for quick deployment of wireless network at events
that involves non -permanent setup: temporary offices, trade-shows, meetings,
temporary POS, etc. There is no need to request an IP address for the AP ahead
of the time. There is no worry about functionality conflicts with the incumbent
network setup when traveling to a temporary event.
Its functions do not stop there however. With link distances of up to several
miles, the AVCW -G can also be used to interconnect networks and provide
access to the Internet.
A built-in Web-based Utility program is provided for the users to pre-configure
AVCW-G prior to putting the radio in operation. And the Utility program can be
used to monitor the communication condition once the radio is in operation. Once
configured, the radio runs self-sufficiently without the aid of any driver program in
the device connected to the radio. This Web-based Utility program therefore is
intended to be, in most cases, just a tool for the network operators. The network
operator can perform remote network management of a fixed AP installation
using this Utility if a valid IP address is assigned to AVCW-G. In most cases, a
pre-configured AVCW -G AP can be plugged into a RJ-45 receptacle on the wall
of any network environment without running the Utility program. The Web-based
Utility is described in more details in Chapter 3.
2
AVCW-G Radio
Key Features
q Plug & Play —
o No driver on the host device is required for radio operation
o Radio operation is independent of the operating system on computer or any connecting device
(Windows 98/2000/ME/XP, MAC, Linux, Unix, embedded, etc.), as long as the device has a
properly supported Ethernet port.
q Industry standard IEEE 802.11g-compliant wireless interface; Interoperable with AP and Client
radios from other vendors
q The IP Bridging Mode, when enabled, allows the sharing of the Station Radio by multiple computers
q Ethernet (802.3 compliant) host interface to enable true Plug & Play
q Maximum 54 Mbps data rate and automatic selection of lower data rates in degraded RF
environment
q Integrated omni -directional-antenna to provide best tradeoff between link-quality and mobility
q Remote network management achievable through Web browser -based configuration tool run from
any OS platforms
q Remote firmware/software upgrade can be achievable from any OS platforms
q Integrated 9 or 15 dBi antennas, or external antenna connectors for last mile wireless LAN
Specifications
Model AVCW-G
Standard IEEE 802.11g
Host Interface Ethernet, 802.3, RJ-45 receptacle
Frequency US: 2.4GHz – 2.462GHz
EU: 2.4GHz – 2.472GHz
RF Channels 11 channels (US, Canada, Brazil, Australia, New Zealand)
13 channels (Europe, except France)
4 channels (France, Mexico)
Transmission power 14 dBm at antenna input typical
Receiver sensitivity -80dBm @1e-5 BER typical
Antenna Patch antenna with ~9dBi
Data Rate 1/ 2/ 5.5/ 11/ 12/ 18/ 24/ 36/ 48/ 54 Mbps
Modulation OFDM with BPSK, QPSK, 16QAM, 64QAM (11g)
DBPSK, DQPSK, CCK (11b)
Link Distance ~1200 ft in open space
Network Types Support both the ad hoc mode and the infrastructure mode
Data Encryption Support the standard 64-bit WEP and the optional 128-bit WEP
DC Supply Output: 9V, 2.6A; Input:100-120V, 50-60Hz, ~1.0A max
Current consumption <480mA (max. reached in transmit-mode)
LED Indicators 4: Power, Transmission, Receiving, Link/Ethernet-connection
Operating Temperature 0°C – 50°C
Regulatory Compliance Pending
3
Chapter 2: Hardware Installation
Safety Statements
Use only the power supply adaptor provided with this product or the
manufacturer's authorized replacement power supply. Connect the power cord to
a properly grounded electrical outlet that is near the product and easily
accessible.
Refer service or repairs, other than those described in the user
documentation, to a professional service person.
DANGER: Do not set up this product or make electrical connections during
a lightning storm
NOTE: AVCW-G requires Wireless Internet Service Providers or system
integrators to provide a professional installation at the customer site; Such
installations generally include: 1) antenna installation and alignment, 2) system
installation using OTC wireless’s proprietary utility program, and 3) knowledge of
computer networking.
Power
This radio uses OTC's Power-Over-Ethernet system to bring power and data to
the radio over OTC's specialized Ariel Category-5 Ethernet cable (supplied with
the standard purchase). This is accomplished by using a DC Injector that sits
between the Network and the Radio and uses a standard wall outlet for DC
power.
To setup the AVCW -G, follow the instructions below:
1. Connect the bundled 9V AC Adapter to the DC input on the bottom of the DC
Injector unit.
2. Connect the Ariel Category-5 cable that extends from the radio to the port on
the DC Injector labeled, "Radio".
3.Connect a crossover Category-5 Ethernet cable from a hub, switch or router to
the port on the DC Injector labeled "Network". If you are connecting an access
point directly to a PC, use a straight-through Category -5 Ethernet cable.
Important: After the radio units are properly installed and positioned, use the
provided coax -seal tapes to wind around and seal the connection between the
radio and Ethernet cable and, for AVCW -G, the connection between the radio
and the antenna. This prevents moisture from entering and damaging the radio.
4
Ethernet connection
Observe the yellow LED to check the status of the Ethernet connection:
If the yellow LED stays on continuously, then the Ethernet connection to the host
computer or device is not made. Check your UTP cable and cable type, and
replace if necessary. If the yellow LED is flickering, and power is on to the
device, then the Ethernet connection between the host computer and the
Wireless Ethernet Adapter is correct. If one cannot communicate, and the yellow
LED is off, you may want to re-position the AVCW-G to a different location for
better RF reception. You may also want to check if the unit is configured with the
proper RF channel and security settings by using the Utility software.
Once the hardware is checked out to work properly with the intended host device
or network equipment, the radio can be secured to a desired location using the
bundled mounting kit.
Above: (left) schematic of AVCW -G connected to a network. (right) AVCW-G connected to
a terminal PC.
Status LEDs
Use the LED status indicators to make sure that the AVCW-G station is
communicating properly:
LED Color Light Blinking Pattern
ON Green Steady on
RX GREEN Steady on
TX GREEN On, when transmitting RF signal
LINK GREEN Flickering when communicating over the Ethernet
port; steady -on when Ethernet connection is absent
5
System Requirements for Web-based Utility program
A Web-based Configuration Utility is a built-in program of the Wireless Adapter
for changing the configuration settings of the Adapter. For using the AVCW-G
Web-based Configuration Utility, your computer must meet the following
requirements:
(1) A Web browser must be installed on the computer. The supported Web
browsers include Internet Explorer 5.0 and above, Netscape 6.0 and above, and
Mozilla 1.0 and above. JavaScript for the browser must be enabled.
(2) Ethernet capable computer with RJ-45 port (either built-in or add-on NIC).
(3) A TFTP (Trivial File Transfer Protocol) client must be installed on the
computer. This requirement is only for the purpose of upgrading the software or
firmware.
No installation of any program is needed. See Chapter 3 for detailed information
of configuring the Wireless Adapter. In order to configure it, you need to know the
factory default settings.
The factory default settings are:
IP address: 192.168.1.241
Subnet mask: 255.255.255.0
(Optional) Gateway: 192.168.1.1
User name: No User Name
Password: No password
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Chapter 3 Web-Based Utility Software
Use the Web-Based Utility Program
Once the AVCW-G is properly powered up and connected to a computer running
a Web browser on the same IP subnet, the Web-based Utility is ready for use. To
access the web utility, open a Web browser and enter http:// followed by the
current IP address of the AVCW-G in the location field, for instance
http://192.168.1.241.
For configuring your computer to match the IP subnet of your PC to that of the
AVCW-G radio, different steps must be taken on different operating systems.
Typically, a static IP address must be manually assigned to a computer and the
user must have administrative privilege to perform such operation. Here are
sample configuration steps involved on Windows and Macintosh.
On Windows, select “Start->Settings->Control Panel” and double click “Network
and Dial-up Connections” icon. In the popped up window, right-click “Local Area
Connection” icon and select “Properties” command. In the “Local Area
Connection Properties” dialog, choose “Internet Protocol (TCP/IP)” component in
the “Components checked are used by this connection” section and then click
“Properties” button. In the subsequently popped up “Internet Protocol (TCP/IP)
Properties” dialog, turn on “Use the following IP address” radio button, and enter
the IP address, subnet mask as well other information in the related fields for
your computer.
On Macintosh, select “Apple->System Preferences…” and double click the
“Network“ icon. In the popped up “Network” dialog, choose “Built-in Ethernet”
option for “Shows” dropdown menu and select the “TCP/IP” tab. Choose
“Manually” for the “Configure” dropdown menu, and then enter your IP address,
subnet mask as well as other information in the related fields for your computer.
Overview of the Web Pages
With most browsers, there are six web pages accessible through six tab links.
These web pages are hosted by a built-in web server in the AVCW-G radio.
Details of each Web page will be discussed in the following sections. The web
pages may look different; however, functions are the same depending on the
combination of operating systems and the web browser being used.
To access any hosted page, you are prompted for a user name and a password.
When accessing a hosted page for the first time, use the factory default settings
listed on the previous page.
The “Save” and “Cancel” buttons are common on “Wireless”, “Advanced”,
“Security”, and “Admin” pages. Clicking the “Save” will apply the settings
according to the displayed value in that particular web page. You will be
prompted to restart the AVCW-G unit. Please note that you may have to
manually click “Refresh” or “Reload” button of the web browser in order to see
the updated web page due to the caching mechanism of the web browser.
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