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Serial Products Installation Procedures

Installing AT-232/485 Boards under Windows 3.x

Before installing the hardware, complete the following steps to install the NI Serial software for Windows 3.x. Installing the NI Serial Software.

NOTE: If you are installing an AT RS-485 you may need to adjust the value of the bias resistors, depending on your application. More information.

Follow these steps to install an AT serial board:

  1. Turn off your computer. Keep the computer plugged in so that it remains grounded while you install the AT serial board.
  2. Remove the top or side cover of the computer.
  3. Remove the expansion slot cover on the back of the computer.
  4. Insert the AT serial board into an unused slot with the serial connectors sticking out of the opening on the back panel. Make sure that you insert the board all the way into the slot. Sometimes the board seems to click firmly into place, even though it is only part of the way in.
  5. Screw the mounting bracket of the AT serial board to the back panel rail of the computer.
  6. Replace the cover.
  7. Turn on your computer.

Your serial hardware is now installed.


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