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56
DI-724U User’s Manual
D-Link Systems, Inc.
Troubleshooting
4.
What variables may cause my wireless products to lose reception?
D-Link products let you access your network from virtually anywhere you want.
However,
the positioning of the products within your environment will affect the wireless range.
Please refer to
Installation Considerations
in the
Wireless Basics
section of this
manual for further information about the most advantageous placement of your D-Link
wireless products.
5.
Why does my wireless connection keep dropping?
Antenna Orientation- Try different antenna orientations for the DI-724U. Try to
keep the antenna at least 6 inches away from the wall or other objects.
If you are using 2.4GHz cordless phones, X-10 equipment or other home
security systems, ceiling fans, and lights, your wireless connection will degrade
dramatically or drop altogether.
Try changing the Channel on your Router, Access
Point and Wireless adapter to a different Channel to avoid interference.
Keep your product away (at least 3-6 feet) from electrical devices that generate
RF noise, like microwaves, Monitors, electric motors, etc.
6.
Why can’t I get a wireless connection?
If you have enabled Encryption on the DI-724U, you must also enable encryption on
all wireless clients in order to establish a wireless connection.
For 802.11b, the Encryption settings are: 64 or 128 bit.
Make sure that the
encryption bit level is the same on the Router and the Wireless Client.
Make sure that the SSID on the Router and the Wireless Client are exactly the
same.
If they are not, wireless connection will not be established.
Move the DI-724U and the wireless client into the same room and then test the
wireless connection.
Disable all security settings. (WEP, MAC Address Control)
Turn off your DI-724U and the client. Turn the DI-724U back on again, and then
turn on the client.
Make sure that all devices are set to
Infrastructure
mode.
Check that the LED indicators are indicating normal activity. If not, check that
the AC power and Ethernet cables are firmly connected.
Check that the IP Address, subnet mask, gateway and DNS settings are correctly
entered for the network.
If you are using 2.4GHz cordless phones, X-10 equipment or other home
security systems, ceiling fans, and lights, your wireless connection will degrade
dramatically or drop altogether. Try changing the Channel on your DI-724U, and
on all the devices in your network to avoid interference.
Keep your product away (at least 3-6 feet) from electrical devices that generate
RF noise, like microwaves, Monitors, electric motors, etc.
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Page 57 / 101
57
DI-724U User’s Manual
D-Link Systems, Inc.
Troubleshooting
7.
I forgot my encryption key.
Reset the DI-724U to its factory default settings and restore the other devices
on your network to their default settings. You may do this by pressing the Reset
button on the back of the unit. You will lose the current configuration settings.
8.
Resetting the DI-724U to Factory Default Settings
After you have tried other methods for troubleshooting your network, you may choose
to
Reset
the DI-724U to the factory default settings. Remember that D-Link Wireless
108G products network together, out of the box, at the factory default settings.
To hard-reset the DI-724U to Factory Default Settings, please do the following:
Locate the
Reset
button on the back of the DI-724U.
Use a paper clip to press the
Reset
button.
Hold for about 10 seconds and then release.
After the DI-724U reboots (this may take a few minutes) it will be reset to the
factory
Default
settings.
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Page 58 / 101
58
DI-724U User’s Manual
D-Link Systems, Inc.
Technical Specifications
Standards
IEEE 802.11g
IEEE 802.11b
IEEE 802.3
IEEE 802.3u
VPN Pass Through/ Multi-Sessions
PPTP
L2TP
IPSec
Device Management
Web-Based- Internet Explorer v6 or later; Netscape Navigator v7 or later; or
other Java-enabled browsers
DHCP Server and Client
Advanced Firewall Features
NAT with VPN Passthrough (Network Address Translation)
MAC Filtering
URL Filtering
Scheduling
Wireless Operating Range
Indoors – up to 328 feet (100 meters)
Outdoors – up to 1312 feet (400 meters)
Operating Temperature
32ºF to 131ºF (0ºC to 55ºC)
Humidity:
95% maximum (non-condensing)
Safety and Emissions:
FCC
Wireless Frequency Range:
2.4GHz to 2.462GHz
LEDs:
Power
Technical Specifications
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Page 59 / 101
59
DI-724U User’s Manual
D-Link Systems, Inc.
Technical Specifications
Status
LAN (10/100)
WLAN (Wireless Connection)
WAN
Physical Dimensions:
L = 7.56 inches (192mm)
W = 4.65 inches (118mm)
H = 1.22 inches (31mm)
Wireless Transmit Power:
15dBm
± 2dB
Security:
WPA- WiFi Protected Access (64-,128-WEP with TKIP, MIC, IV Expansion,
Shared Key Authentication)
External Antenna Type:
Singal detachable antenna
Modulation Technology:
Orthogonal Frequency Division Multiplexing (OFDM)
Power Input:
Ext. Power Supply DC 5V, 3A
Weight:
10.8 oz. (0.3kg)
Warranty:
1 year
Wireless Data Rates* with Automatic Fallback:
108 Mbps
54 Mbps
48 Mbps
36 Mbps
24 Mbps
18 Mbps
12 Mbps
11 Mbps
9 Mbps
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Page 60 / 101
60
DI-724U User’s Manual
D-Link Systems, Inc.
Technical Specifications
6 Mbps
5.5 Mbps
2 Mbps
1 Mbps
Receiver Sensitivity:
108Mbps
54Mbps OFDM, 10% PER, -71dBm
48Mbps OFDM, 10% PER, -71dBm
36Mbps OFDM, 10% PER, -78dBm
24Mbps OFDM, 10% PER, -82dBm
18Mbps OFDM, 10% PER, -85dBm
12Mbps OFDM, 10% PER, -87dBm
11Mbps CCK, 8% PER, -85dBm
9Mbps OFDM, 10% PER, -90dBm
6Mbps OFDM, 10% PER, -91dBm
5.5Mbps CCK, 8% PER, -88dBm
2Mbps
QPSK, 8% PER, -89dBm
1Mbps BPSK, 8% PER, -92dBm
* Maximum wireless signal rate derived from IEEE Standard 802.11g 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. D-Link
108G performance results are based on testing with other D-Link 108G enabled devices utilizing Packet
Bursting, FastFrames, Turbo Mode and Compression techniques. Data already compressed may not
benefit from the D-Link 108G compression techniques.
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