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Opto DIO48 OPTO DIO Reference

CHAPTER 2

OPTO DIO48

CONFIGURATION.

Introduction.____________

Read Chapter 1 first. This chapter explains how to

configure the Opto DIO48 card ready to install in a PC. Detailed

instructions are given how to set the address select, the IRQ

jumper block and the output driver select jumper block. The

settings of the watch dog timer output are also explained.

The two thirds size Opto DIO48 card will fit into both

long or short slots, in either 8 bit slots or the longer 16 bit slots.

Configuring The Opto DIO48 Card._______________________________

In the state it leaves our factory, Opto DIO48 card is ready

to plug straight into an PC computer.

So, unless you have GOOD REASON, you do not need

to alter its default setting.

However, due to the large variety of add-on cards that may

be present in the PC, your Opto DIO48 card may need adjusting

to suit your setup.

The layout of the Opto DIO48 card is given in Figure 2-1. The

default settings are i/o address 0308Hex, IRQ 7 selected but not

enabled, WATCHDOG VIA PA10 disabled- the PA10 line is

output- and the WATCH DOG OUTPUT OPTIONS, GOODLO

output jumpered to OUT, RESHI output jumpered to BUS. The

source cards have the UDN2984 chips installed and the sink

cards have ULN2803 chips installed.

The Opto DIO48 requires an external power input to power

the output drivers and the isolated side of the opto couplers. On

card power regulation allows the use of external un-regulated

power source, input range 17.5 - 35 Volts. The power supply

input is reverse polarity protected.

Chapter 2 Page 15

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Brainboxes IE-780 Información técnica Pagina 27