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Manual MPCICOM422-4.E1b
Optional model PCI-COM422/4S1 has connectors for two of the four ports and includes a second
mounting bracket which provides connections for two more ports. That companion mounting bracket
must be mounted in an adjacent position because ribbon cables are used to mate those two connectors
via headers on the card.
If you are using Windows95/98, your operating system should detect the new hardware and prompt
you for the installation CD. The simplest option is to insert the CD provided into the CD ROM and
allow the operating system to look for the files that it wants.
Alternatively, if you have already installed the software to your computer, you can specify the
installation directory instead of allowing Windows95/98 to look around. Either option will work
acceptably. Please note that even though Windows95/98 looks for and finds software to install, no
driver is actually installed, used, or needed. This step merely tells Windows95 where to place the card
in the registry of devices. You can find the installed card in Device Manager, under the class Data
Acquisition. Use this method to determine the card's base address as PCIFind.EXE may or may not
work under your specific installation of Windows95.
If you are not using Windows95, or if your installation of Windows95 does not detect the new
hardware you installed, run PCIFind.EXE to determine the base address that the computer assigned.
PCIFind uses the Vendor ID and Device ID to search for your card, then reads the base address and
IRQ assigned. If you want to determine the base address and IRQ assignment yourself, The Vendor
ID will be 494F and the Device ID will be 1058.
The base address assigned by BIOS or the operating system can change each time new hardware is
installed into or removed from the computer. Please re-check PCIFind or Device Manager if the
hardware configuration is changed,
Input/Output Connections
There are two I/O connector configurations. Model PCI-COM422/4 has a male DB25 connector on
the card mounting bracket and breakout cables that terminate in four female DB9 connectors.
Optional model PCI-COM422/4S1 has two DB9 connectors on the card mounting bracket (Ports A
and B) and two more DB9 connectors on a separate mounting bracket (for Ports C and D).
To ensure that there is minimum susceptibility to EMI and minimum radiation, it is important that the
card mounting bracket be properly screwed into place and that there be a good connection to the
chassis. Also, proper EMI cabling techniques (cable connect to chassis at the aperture, shielded
twisted-pair wiring, etc) be used for the input/output wiring.