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12 MultiModem ZPX User Guide

Step 2 - Configure Jumpers

The MT5634ZPX board contains seven jumpers for setting the interrupt request (IRQ) number and COM

port assignment. The jumpers are located on the lower part of the PC board as shown below. The IRQ

number is set using jumpers 1, 2, and 3 and the COM port assignment is set using jumpers 4 through 7.

The default IRQ number is IRQ5 and the default COM port assignment is COM4.

PC Board Jumpers

1. Before handling the MT5634ZPX, discharge static in your body by touching a metal piece of the

computer chassis. Carefully remove the MultiModem ZPXfrom its antistatic bag, handlingit only

by the mounting bracket and edges. Do not touch the gold-plated connectors along the bottom

edge.

2. To change the IRQ from the default IRQ5, move the jumper from the default position to the

position that supports your application.

3. To change the COM port assignment from the default COM4, move the two jumpers from

their default positions to new positions that support your application.

Step 3 - Install the Modem into Your Computer

Installing the MultiModem ZPX requires you to open your computer. Please consult your computer

manual in addition to the following instructions:

1. Turn off the computer and unplug it. Failure to do so may result in damage to both the

MultiModem ZPX and_ the computer. Do not turn on the computer until the instructions tell

you to do so.

2. Remove the cover from the computer as instructed in the computer manual.

3. Select an empty ISA expansion slot. Remove the expansion slot cover and save the retaining

screw.

Chapter 2 - Installation

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Connect Tech Echo/ISA Guide de l'utilisateur Page 12