User manual LAVA RS422-550

[. . . ] Lava RS422-550 Installation Manual LAVA RS-422 MADE IN CANADA LAVA COMPUTERS P. N. [. . . ] For Serial 1, install the jumper above the number corresponding to the desired IRQ, so that it covers the pin in the bottom row and the pin in the middle row. For Serial 2, install the jumper above the number corresponding to the desired IRQ, so that it covers the pin in the top row and the pin in the middle row. For Windows users: After you have configured the RS422-550 jumpers, you will need to go through the "Add New Hardware" procedure in Windows Control Panel. Install the two ports on the RS422-550 as Standard Communications Ports when prompted. Please note that after completing the Add New Hardware procedure, you will likely have to return to Control Panel, System, Device Manager, and modify the settings in the Ports section by changing the Basic Configuration to match your RS422-550 hardware jumper settings. Note: To disable a port, remove the jumper from both the COM and the corresponding IRQ jumper configuration pins. Connector Details The pins of the DB-9 female connectors on the RS422-550 serial board are illustrated on the right. [. . . ] Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. [. . . ]