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36
When this condition occurs, follow the steps below:
1)
The current presenter should click “Establish a Session” to try to resume
the presentation. If the presentation is successfully resumed, the
abnormal condition is just temporary and no further action is required.
Troubleshooting
(Continued)
The DPG-2000W Session is Interrupted During a Pre-
sentation
This signals that the
DPG-2000W
has detected a link-loss for an extended
period of time or a severe communication error. Since the
DPG-2000W
is
designed to support one presentation at a time, the
DPG-2000W
cleans up
the communication error and returns itself to the initial state (where it displays
the banner page) of being “available for connection” in order to prevent the
DPG-2000W
from being locked up due to a malfunctioning user computer.
With the auto-reconnection feature, this rarely occurs.
The Presentation Screen Appears Frozen During a
Presentation
This indicates that the
DPG-2000W
has detected a link-loss. The
DPG-2000W
and DPG-2000W PSM have an intelligent built-in mechanism to detect the
link-loss and can automatically restore the connection. When a link-loss has
been detected, DPG-2000W PSM will display a message box and attempt to
automatically restore the connection. If the auto-reconnection attempt is
successful, the user does not need to do anything. In this case, the
auto-reconnection is transparent to the user. However, if the cause of the
link-loss is due to a physical disconnection, for instance, the wireless card was
pulled out,
the user needs to restore the physical connection so that the
auto-reconnection attempt can proceed. The presentation screen will not be
updated once the link is lost,
unless a reconnection is re-established. However,
if link-loss occurs for an extended period, the
DPG-2000W
will terminate the
reconnection waiting state and display the banner page indicating that a fresh
presentation session is ready to be established.
The default duration for a link-loss is 8 seconds. The
DPG-2000W
will retry 3
periods of this duration. If no re-connection is established before the reconnection
time runs out, the
DPG-2000W
returns itself to the banner page.
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37
Troubleshooting
(Continued)
There is Radio Interference
You may be able to eliminate RF interference by trying the following:
Find the “channel” used by the source of the interference and coordinate
your network and the interference source to be on channels that are at
least 20MHz, but preferably 30MHz, apart. Channels 1,6, and 11 are
non-overlapping.
Move the
DPG-2000W
to a location where the interference is minimized;
in general, increase the distance between the wireless computers and
the device causing radio interference.
Avoid using devices operating in the 2.4Ghz range in the same vicinity
of the
DPG-2000W
.
Keep the computer with the
DPG-2000W
away from microwave ovens
and large metal objects.
±
±
±
±
2)
If the current presenter failed to resume presentation by clicking
“Establish a Session”, another presenter should try to “Establish a
Session.” If this new presenter can successfully start a presentation,
the problem was localized on the previous presenter’s computer and/
or its wireless card. Address that problem after the meeting.
3)
If a second presenter also fails to “Establish a Session” to the
DPG-2000W
, a persistent abnormal condition has to be identified. Follow
other trouble-shooting tips in this section to identify the persistent
abnormal condition.
4)
Power cycle the
DPG-2000W
.
Page 38 / 44
38
1.
Turn on or reboot the
DPG-2000W
.
2.
During the boot-up screen, wait for a
“Reset to factory default” timer
starts
message to appear.
Tap on the hardware reset button or power cycle to reboot the
DPG-2000W
before the timer ends (10 seconds), and the
DPG-2000W
will revert back to factory default settings.
4.
During the next boot-up screen, a
Reset to Factory Default
message
should appear next to the Timer message, indicating a successful
hardware reset.
Reset to Factory Defaults
The hardware reset button is located at the back of the
DPG-2000W
. You can
use a bent paper clip to access the hardware reset button. The main function
of the hardware-reset button is to reboot the
DPG-2000W
. To reboot the
DPG-2000W
, only a light tap on the reset button is required.
Warning
Please note that resetting the
DPG-2000W
to its factory default settings
will erase all configurations and encryption information you may have set
through the web interface.
To reset the
DPG-2000W
back to the factory default settings, follow the
steps below:
Push Reset
Page 39 / 44
39
Technical Specifications
Model
DPG-2000W
Standard
802.11g
Projector/Monitor Interface
Standard 15-pin VGA connector
Display resolution & color
Automatically set to user’s display resolution up to XGA
(1024x768)
Automatically set to user’s color depth up to 16-bit True-
Color
Software supplied
User software run on Windows 98/ME/2000/XP
Web-browser-based Administration Utility to allow user
to upload customized banner page, set WEP, set channel
and upload firmware upgrades
Frequency
2.4GHz – 2.483GHz
RF Channels
11 channels (US, Canada), 13 channels (Europe and
Japan)
Transmission power
14dBm at antenna input typical
Receiver sensitivity
-80dBm @1e-5 BER typical
Antenna
Supports antenna diversity with one externally connected
(RSMA connector) Dipole antenna with ~5dBi gain and
an internal dipole antenna with ~0 dBi gain
Data Rate
54 Mbps maximum with multiple user selectable fall back
data rates.
Modulation
OFDM, Direct Sequence Spread Spectrum
Link Distance
~1200 ft in open space; 300 ft typical indoor environment
Network Types
AP mode for dedicated presentation link and other traffic
as desired.
Network Security
64bit or 128-bit WEP
DC Voltage
5V
Current consumption
2A (max. reached in transmit-mode)
LED Indicators
Power, Wireless Link
Dimensions
7.08” x 5.55” x 1.2”
Operating Temperature
-10°C – +50°C
Operating Humidity
10% to 85% non-condensing
Regulation Compliance
FCC, CE
Page 40 / 44
40
Techni
echni
echni
echni
echnical Support
cal Support
cal Support
cal Support
cal Support
You can find
software updates and user documentation on the D-Link website.
D-Link provides free technical support for customers within the United States and
within Canada for the duration of the warranty period on this product.
U.S. and Canadian customers can contact D-Link technical support through our
website, or by phone.
Tech Support for customers within the United States:
D-Link Technical Support over the Telephone:
(877) 453-5465
24 hours a day, seven days a week.
D-Link Technical Support over the Internet:
Tech Support for customers within Canada:
D-Link Technical Support over the Telephone:
(800) 361-5265
Monday to Friday 7:30am to 12:00am EST
D-Link Technical Support over the Internet:
Contacting Technical Support

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