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4) With certain brands of PCMCIA 802.11b WiFi cards, it might take a bit longer to
link up with the WiJET than with other brands of PCMCIA cards. The reason for
this is that the drivers and features set of each brand might cause the link up time
between the WiJET and the computer to take longer. Simply click “Retry” as you
see on Figure 15 and let the Connect Status screen show up again. If the “Target
Not Found” window appears again, there probably is no link established between
the WiJET and the computer.
The WiJET banner page unexpectedly re-appears in the middle of a presentation
This signals that the WiJET has detected a link-loss lasted more than 8 seconds. Since the
WiJET is designed to support one presentation at a time, the WiJET returns itself to the
initial state (where displaying the banner page is a part) of being “available for
connection” in order to prevent the WiJET from being locked up with one possibly
malfunctioning user computer.
When this condition occurs, follow the steps below:
1. The current presenter should click “Connect” to try to resume the presentation. If
the presentation is successfully resumed, the abnormal condition is just temporary
and no further action is required.
2. If the current presenter failed to resume presentation by clicking “Connect”,
another presenter should try to “Connect”. 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 “Connect” to the WiJET, a persistent abnormal
condition has to be identified. Follow other trouble-shooting tips in this chapter to
identify the persistent abnormal condition.
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.
•
Reseat the WiJET 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 2.4GHz cordless phone in the vicinity of the radio
•
Keep the computer with the WiJET away from the microwave oven and large
metal objects.
•
Consult the dealer or an experienced radio technician for help.
