User`s manual

destroyed when the power to the card is applied. This is due to the fact that the input current
biases the IC so that it acts as a forward biased diode on power-up. This type of failure is typi-
cal on serial interface chips.
Hot insertion
Plugging cards into the card cage with the power on will usually not cause a problem.
(MicroBee urges that you do not do this!)
However, the card may be damaged if the right sequence of pins contacts as the card is
pushed into the socket. This usually damages bus driver chips and they may become hot
when the power is applied. This is one of the most common failures of expansion cards.
PREFACE
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This manual is a guide to the proper configuration, installation, and operation of your PCFW-
104 Interface. For setup and operation of the FreeWave FGRM Radio Modem refer to the
FreeWave Radio Users Manuals included with this product. You can use your PCFW-104 card
in conjunction with other PC/104 expansion cards, tailoring your system for a wide variety of
applications.
TECHNICAL SUPPORT
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MicroBee Systems is committed to supporting our products. For this reason all FreeWave
User manuals as well as this manual are always available online in PDF format at http://www.
microbee-systems.com/user_manuals.htm.
This unit has been tested with a number of operating systems including MSDOS, Linux, QNX,
Microsoft Windows 98, NT and 2000. Any operating systems supporting an ISA legacy device
should operate normally with this product. MicroBee Systems does not guarantee operation
with unusual or custom operating systems.
If you have a question about the PCFW-104 card and cannot find the answer in this manual,
call Technical Support. They will be ready to give you the assistance you need.
When you call, please have the following at hand
• Your PCFW-104 Radio Modem Interface User’s Manual and the FreeWave Radio Users
Manual.
• A description of your problem.
The direct line to Technical Support is 256-489-6671
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