Page 61 / 98 Scroll up to view Page 56 - 60
61
Troubleshooting
!
!
!
!
!
Double-click
on
Network
Adapters
Right-click on
D-Link
Air
Pro DWL-A650
Wireless Cardbus
Adapter
(In this example,
the DWL-A650 is used;
you may be using another
network adapter, but the
procedure will remain the
same.)
Select
Properties
to check that the
drivers are
installed properly
Look under
Device
Status
to check that the
device is working
properly
Click
OK
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62
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-774.
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 secu-
rity systems, ceiling fans, and lights, your wireless connection will degrade dra-
matically 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.
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.
Please note that there are two
separate SSIDs for 802.11a and 802.11g.
The default SSID for both 802.11a and 802.11g
is
default
.
!
!
!
6.
Why can’t I get a wireless connection?
To establish a wireless connection, while enabling Encryption on the DI-774, you must
also enable encryption on the wireless client.
For 802.11a, the Encryption settings are: 64, 128 or 152 bit.
Make sure that the
encryption bit level is the same on the Router and the Wireless Client.
For 802.11g, the Encryption settings are: 64, 128, or 152 bit.
Make sure that the
encryption bit level is the same on the Router and the Wireless Client.
!
!
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63
7.
Resetting the DI-774 to Factory Default Settings
After you have tried other methods for troubleshooting your network, you may
choose to
Reset
the DI-774 to the factory default settings.
Remember that D-
Link
Air
Xpert products network together, out of the box, at the factory default
settings.
Troubleshooting
To hard-reset the D-Link
Air
Xpert DI-774 to Factory Default Settings, please do the
following:
!
!
!
!
After the DI-774 reboots (this may take a few minutes) it will
be reset to the factory
Default
settings
Use a paper clip to press the
Reset
button
Hold for about 10 seconds and then release
Locate the
Reset
button on the back of the DI-774
Page 64 / 98
64
Technical Specifications
Standards:
!
IEEE 802.11g
!
IEEE 802.11b
!
IEEE 802.11a
!
IEEE 802.3 and IEEE 802.3u
VPN Pass Through/Multi-Sessions:
!
PPTP
!
L2TP
!
IPSec
Advanced Firewall Features:
!
Supports NAT with VPN pass-through, for added security
!
MAC Filtering
!
IP Filtering
!
URL Filtering
!
Domain Blocking
!
Scheduling
Device Management:
!
Web-based -Internet Explorer v6 or later; Netscape Navigator
v6 or later; or other Java-enabled browsers
!
DHCP Server and Client
Wireless Data Rates
*
with Automatic Fallback:
!
54Mbps
!
48Mbps
!
36Mbps
!
24Mbps
!
18Mbps
!
12Mbps
!
11Mbps
!
9Mbps
!
6Mbps
!
5.5Mbps
!
2Mbps
!
1Mbps
Page 65 / 98
65
Security:
!
64-, 128-, 152-WEP
!
WPA -Wi-Fi Protected Access (64-, 128, 152-WEP with TKIP,
MIC, IV Expansion, Shared Key Authentication)
!
Supports Advanced Encryption Standard (AES)
Technical Specifications (continued)
Media Access Control:
!
CSMA/CA with ACK
Wireless Frequency Range:
!
2.400GHz to 2.500GHz
!
5.150GHz to 5.850GHz
Wireless Operating Range:
!
Indoors: Up to 328 feet (100 meters)
Modulation Technology:
!
Orthogonal Frequency Division Multiplexing (OFDM)
!
Complementary Code Keying (CCK)
!
Direct Sequence Spread Spectrum (DSSS)
Receiver Sensitivity:
!
54Mbps OFDM, 10% PER,-73dBm
!
48Mbps OFDM, 10% PER,-76dBm
!
36Mbps OFDM, 10% PER,-82dBm
!
24Mbps OFDM, 10% PER,-85dBm
!
18Mbps OFDM, 10% PER,-88dBm
!
12Mbps OFDM, 10% PER,-89dBm
!
11Mbps CCK, 8% PER,-91dBm
!
9Mbps OFDM, 10% PER,-90dBm
!
6Mbps OFDM, 10% PER,-91dBm
!
5.5Mbps CCK, 8% PER,-92dBm
!
2Mbps QPSK, 8% PER,-93dBm
!
1Mbps BPSK, 8% PER,-94dBm

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