Specifications
Interrupt Level (IRQ) Setting
The PCL-741 card is designed to access interrupt levels 3 up to level
15 with the exception of 6, 8, 13, and 14. If the card is to be desig-
nated as COM1: and COM2:, the card must be set to interrupt levels
and 3 respectively. Ensure this does not conflict with any other cards
IRQ. Simply place the jumper links on the required interrupt level
asshown below:
Card installation
Warnaing! Tum off your PC’s power supply whenever you
installorremove the PCL-741 oritscables. Static
electricity can easily damage computer
equipment.Ground yourseH by touching the chassis
of the computer (metalJ before you touch any
boards. See t the static warning on page 8.
1. Turn off the computer. Turn the power offto any peripheral devices
(such as printers and monitors).
2. Disconnect the power cord and any other cables from the back of
the computer. Turn the PC if necessary to gain access to the cables.
3. Remove the PCs cover (refer to your users guide if necessary).
4. Locate the expansion slots or passive backplane (at the rear of the
PC) and choose any unused slot.
5. Remove the screw that secures the expansion slot cover to the PC
(save the screw to secure the interface card retaining bracket).
Remove the anti-vibration card clamp if supplied.