Switch And Jumper Settings; Base I/O Address And Interrupt Selection; Table 2-1. Ibm Pc Serial Port Adapters; Table 2-2. Factory Default Settings And Optional Configurations - National Instruments GPIB-COM User Manual

Section Two
Table 2-1 shows the standard base I/O address and interrupt level for each serial port.
Name of Port
Serial Port 1
Serial Port 2
Serial Port 3
Serial Port 4

Switch and Jumper Settings

Table 2-2 shows the factory settings and optional configurations for the switches and jumpers on
the GPIB-COM.

Table 2-2. Factory Default Settings and Optional Configurations

GPIB-COM
Base I/O Address
Interrupt Level
If you need to change the factory settings, continue on. If you do not need to change the factory
settings, skip to Installation later in this section.

Base I/O Address and Interrupt Selection

The base I/O address and interrupt line used by the GPIB-COM are determined by the jumpers
located at positions W2 and W5. The jumpers are set at the factory for base I/O address 3F8 hex
and interrupt level 4.
© National Instruments Corporation

Table 2-1. IBM PC Serial Port Adapters

Base I/O Address (hex)
3F8
2F8
3E8
2E8
Default
3F8
4
2-3
Configuration and Installation
Interrupt Level
4
3
Not Used
Not Used
Optional
2F8, 3E8, 2E8
3
GPIB-COM User Manual