User`s guide

4 Advanced Procedures
4-2
I/O Boards
Typically I/O boards are preset from the factory for certain base addresses,
voltage levels, and unipolar or bipolar modes of operation. Boards often include
switches or jumpers that allow you to change many of these initial settings. For
information about setting up and installing any I/O board, read the board
manufacturer’s documentation.
This section includes the following topics:
• “I/O Board Dialog Box” on page 4-2 — Select the physical boards installed in
your computer, and enter board settings
• “ISA Bus Board” on page 4-4
— Enter base address
• “PCI Bus Board” on page 4-5 — Enter or determine slot number and install
drivers from the board manufacturer
• “PC/104 Board” on page 4-5
— Enter base address
• “Compact PCI Board” on page 4-5
— Enter or determine slot number and
install drivers from the board manufacturer
• “PCMCIA Board” on page 4-5
— Install drivers from the board manufacturer
I/O Board Dialog Box
Usually, the drivers with the Real-Time Windows Target provide the same
flexibility of settings offered by the board manufacturer. You enter the I/O
board settings in the I/O board dialog box. There are three types of settings:
•
Software selectable — Select check boxes in the I/O board dialog box. The
driver writes the settings you selected to the board. Examples include A/D
gain inputs and selecting unipolar or bipolar D/A outputs.
•
Jumper selectable and software readable — Set jumpers or switches on
the physical board. The driver reads the settings you selected.
•
Jumper selectable, but not software readable — Set jumpers or switches
on the physical board, and then manually enter the same settings in the I/O
board dialog box. These entries must match the hardware switches or
jumpers you set on the board. This is necessary because some manufacturers
do not provide a means for the I/O driver to read all of the board settings with
software. Examples include base address, D/A gain, and differential or
single-ended A/D inputs.