D-Link AirPremier DWL-1750 User manual

Manual
Building Networks for People
Outdoor 2.4 GHz Wireless Router/Bridge
D-Link AirPremier
DWL-1750
This product should be installed ONLY by
experienced, professional installers who are
familiar with local building and safety codes,
and wherever applicable, are licensed by the
appropriate authorities. Failure to do so may
void the warranty and may expose the user or the
service provider to legal and financial liabilities.

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Contents
Package Contents ................................................................................ 3
Introduction ........................................................................................... 4
Connections ......................................................................................... 5
Outdoor Installation .............................................................................. 6
Grounding ............................................................................................. 6
Antenna ................................................................................................ 7
Features ............................................................................................... 8
Network Layout .................................................................................... 9
Using the Configuration Utility .............................................................11
Networking Basics .............................................................................. 33
Frequently Asked Questions .............................................................. 48
Troubleshooting .................................................................................. 50
Appendix I: Telnet Configuration (optional) ......................................... 55
Appendix 2: Boot Code Firmware Upgrade ........................................ 64
Technical Specifications ..................................................................... 76
Contacting Technical Support ............................................................. 79
Warranty and Registration .................................................................. 80

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Contents of Package:
D-Link AirPremier DWL-1700AP
Outdoor 2.4GHz Wireless Access Point
Inline Power Injector
AC Power Cord
MIL-C-5015 style RS232 Console Port Cable
Grounding Wire
Crossover Ethernet Cable
Reverse Polarity-N Female RF Cable
30M MIL-C-5015 style Ethernet Cable
Mast Mounting Kit
Wall Mounting Kit
Manual on CD
Package Contents
If any of the above items are missing, please contact your reseller.
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Introduction
The DWL-1750 conforms to the 802.11 standard and covers a large operating
distance, providing an 11Mbps* outdoor WLAN which enables users to access
the Internet or an organization’s network.
The D-Link AirPremier DWL-1750 features a die-cast watertight housing and
a built-in lightning protector to protect it from harsh environmental conditions,
including extreme variance in temperature. It also includes Power over Ethernet
(PoE) and a unique outdoor remote-mounted design for easy installation.
The DWL-1750 is suitable for manufacturing plants, industrial sites, military
bases, universities, hotels, airports and golf courses.
With a built-in firewall, the DWL-1750 can operate as a NAT inbound virtual
server and provides IP based access control. Denial of Service (DoS) protection
is also included with the DWL-1750 to prevent the wireless network from being
hacked. The DWL-1750 is easily managed via a web-based user interface,
Telnet, or RS-232 console configuration. The DWL-1750 can also be managed
remotely through SNMP (MIB I & MIB II) support.
Internet Explorer Version 6.0 or Netscape Navigator
Version 6.0 and Above
Computers with Windows, Macintosh, or Linux-based
operating systems with an installed Ethernet adapter
System Requirements for Configuration:
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*”Maximum wireless signal rate based on IEEE Standard 802.11b specifications. Actual data throughput will
vary. Network conditions and environmental factors, including volume of network traffic, building materials
and construction, and network overhead lower actual data throughput rate.”

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Connections
Special Ethernet Port
Connect one end of the
MIL-C-5015 Ethernet
Cable into this port;
connect the other end
into the Power and
Data Output Port on the
Inline Power Injector.
Special serial port (optional)
Connect one end of the MIL-C-5015 style RS-
232 console port cable to this port; connect the
other end to a Serial Port on a computer that is
running a terminal emulation program. Set the
terminal to 15200 Baud, No Parity, 8 data bits,
1 stopbit and ANSI compatible.
Note: This connection is optional. Use this
console connection only if you are configuring
the DWL-1750 via the console.
Reverse
Polarity -N Type
Connector for
connecting the
antenna or RF
cable.
PoE Power Injector
Attach one end of
the power cord to the
power port; attach the
other end to the wall
outlet.
Data Input Port
Connect one end
of the cross-over
Ethernet cable to
this port; connect
the other end to the
Ethernet port on the
computer.
Power & Data
Output Port
Attach one end of
the special Ethernet
cable to this port;
attach the other
end to the Special
Ethernet Port on the
DWL-1750.

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Grounding
Outdoor Installation
The DWL-1750 can be mounted on the side of a building or mounted to a mast
as shown above. A wall mount is a convenient location if the roof overhang is not
excessive and/or the location is high enough to provide a clear line of sight.
A safety grounding system is necessary to protect your outdoor
installation from lightning strikes and the build-up of static electricity.
Direct grounding of the antenna mast and the DWL-1750 is very
important. The grounding system must comply with the National
Electrical Code and the safety standards that apply in your country.
Always check with a qualified electrician if you do not know how to
properly ground the DWL-1750.
This product should be installed ONLY by experienced, professional
installers who are familiar with local building and safety codes, and
wherever applicable, are licensed by the appropriate authorities.
Failure to do so may void the warranty and may expose the user or
the service provider to legal and financial liabilities.

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The construction of the mast must be of a sturdy, weatherproof and
no corrosive material like examples of galvanized or stainless steel
construction pipe.
Typical diameter of the mast should be between 35 mm (1.4 in.) and
41 mm (1.625 in.). Subjecting to the type of antenna that you intend
to install other diameters may be possible as well.
The height of the antenna mast must be sufficient to allow the
antenna to be installed at least 1.5 m (5 ft.) above the peak of roof.
If the roof is metal, then the height of the antenna should be a
minimum of 3 m (10 ft) above the roof.
The mast or wall-bracket must be free from any substance that may
avoid a good electrical connection with the antenna; for example,
paint.
Antenna Mast Requirements
To accommodate the outdoor antennas, the antenna mast must satisfy the
following requirements:
Antenna Alignment
For optimal performance of your wireless link, make sure that the antennas
are properly aligned (facing one another “eye-to-eye”). To align the antennas:
Use a pair of binoculars and/or a map of the area and compass to
point the antennas to one another.
Use the Utility - “Wireless Link Info” in the Web Configure as
described in the “Utility” section to analyze the radio link quality. The
“Wireless Link Info” will enable you to display the levels of signal
strength and link quality. Looking at the Wireless Link Info screen,
you can interactively optimize antenna alignment if required, by
making small modifications in the antenna orientation.
Alternatively, consult a professional Antenna Installation Service to
optimize the antenna alignment.
Omni-directional antennas are characterized by a wide radiation
pattern. Therefore alignment of this type of antennas is less critical
than for directional antennas.
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Features
Better security
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Compatible with the 802.11b standard to provide a wireless data rate of
up to 11Mbps.
Ideal for Internet Hotspots- Provides outdoor users with wireless Internet
Access
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2 Different Operation modes - Capable of operatingas either a Router or
a Bridge.
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Robust Outdoor Housing - Designed for harsh outdoor environments, with
die-cast, watertight housing and built-in lightning protector
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64/128 bit WEP
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Built-in Firewall
Operates in the 2.4GHz frequency range
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Easy Installation with the Setup Wizard
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Multiple Management options - Great for enterprise wireless networkmanagement
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Web-based configuration
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Telnet
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RS-232 Console configuration
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SNMP (MIB I & MIB II) support

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Mount the DWL-1750 to an unobstructed wall or mast. Make sure that is is
grounded.
Connect the DWL-1750 to the Inline Power Injector
Connect a Hub, Switch or Router to the Inline Power Injector
Connect a desktop computer to the router. You can use this Ethernet connect-
ed computer to configure and manage the DWL-1750
Network Layout

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For more information regarding installation, please see the sections on
Grounding and Connections in this manual, and the Quick Installation Guide
that came with your purchase.
Network Layout (continued)
Upon completion of the installation, laptops, with wireless network cards installed,
will be able to connect wirelessly to the DWL-1750 in order to surf the Internet.