Page 71 / 80 Scroll up to view Page 66 - 70
71
Boot Code Firmware Upgrade (continued)
Key-in
DLP
and press
Enter
to erase the old Web image and when
CCC...
appears, select
Transfer
>
Send File
.
Set Protocol as
1K Xmodem
.
Key-in correct filename (
PFS.IMG
) and path, then choose
Send
to start
Web image upgrade.
DWL-1750 - Hyper Terminal
Folder: G:\DWL-1750
G:\DWL-1750\PFS.IMG
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72
D-Link
wireless products are based on industry standards to provide easy-to-
use and compatible high-speed wireless connectivity within your home, business
or wherever a wireless network is available. D-Link wireless
products will allow
you access to the data you want, when and where you want it. You will be able
to enjoy the freedom that wireless networking brings.
A wireless local area network (WLAN) is a cellular computer network that
transmits and receives data with radio signals instead of wires. WLANs are
used increasingly in both home and office environments, and public areas such
as airports, coffee shops and universities. Innovative ways to utilize WLAN
technology are helping people to work and communicate more efficiently.
Increased mobility and the absence of cabling and other fixed infrastructure
have proven to be beneficial for many users.
Wireless users can use the same applications they use on a wired network.
Wireless adapter cards used on laptop and desktop systems support the same
protocols as Ethernet adapter cards.
Under many circumstances, it may be desirable for mobile network devices to
link to a conventional Ethernet LAN in order to use servers, printers or an Internet
connection supplied through the wired LAN.
A Wireless Access Point is a device
that can be used to provide this link.
Appendix 3:
Wireless Basics
Page 73 / 80
73
Wireless Basics
(continued)
People use WLAN technology for many different purposes:
Mobility
-
Productivity increases when people have access to data in any
location within the operating range of the WLAN.
Management decisions
based on real-time information can significantly improve worker efficiency.
Low Implementation Costs
WLANs are easy to set up, manage,
change and relocate. Networks that frequently change can benefit from a
WLAN
ease of implementation. WLANs can operate in locations where
installation of wiring may be impractical.
Installation and Network Expansion
- Installing a WLAN system can be
fast and easy and can eliminate the need to pull cable through walls and
ceilings. Wireless technology allows the network to go where wires cannot
go-even outside the home or office.
Scalability
?WLANs can be configured in a variety of ways to meet the
needs of specific applications and installations. Configurations are easily
changed and range from peer-to-peer networks suitable for a small number
of users to larger infrastructure networks to accommodate hundreds or
thousands of users, depending on the number of wireless devices deployed.
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74
IEEE 802.11b Direct Sequence Spread Spectrum (DSSS)
Technical Specifications
n
Standards
Device Management
Web-Based- Internet Explorer v6 or later; Netscape Navigator v6
or later; or other Java-enabled browsers
n
FCC Operating Range
Temperature
Humidity:
n
Up to 3.48 miles (5.6Km)
n
Console (RS-232) Configuration
Regulation Certifications:
2.4GHz to 2.497MHz ISM band
n
Frequency Range:
FCC Part15
n
ETSI 300/328
n
Operating: -4ºF to 158ºF (-20ºC to 70ºC)
n
5% to 95% typical
n
Storing: -40ºF to 176ºF (-40ºC to 80ºC)
n
11 Mbps (CCK)
5.5 Mbps (CCK)
2 Mbps (DQPSK)
1 Mbps (DBPSK)
n
n
n
n
Data Rates & Modulation:
n
SNMP MIB I & MIB II
All-weather enclosure
n
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75
Transmit Power (excluding external antenna):
23dBm (200mW typically)
n
Technical Specifications (continued)
Physical Dimensions:
L = 9.57 inches (243mm)
W = 7.87 inches (200mm)
H = 3.03 inches (77mm)
n
n
n
LIghtning Protector Surge Current:
20KA
n
<-84dBm @11Mbps
<-90dBm @2Mbps
Proprietary N-type (Reverse Polarity)
n
n
n
n
Input: 100-240V AC 50-60Hz
Power Supply (PoE):
n
Output: -48V DC 0.7A
n
Receiver Sensitivity:
RF Connector:
Interface:
1 ports 10base-T/100Base-TX Ethernet for WAN/LAN
UART for console
n
n
Firmware Upgrade:
TFTP (Transparent FTP)
Xmodem & 1K Xmodem
n
Firewall:
Built-in NAT firewall
IP based Access Control
Denial of Service (DoS) protection
n
n
n

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