National Instruments DAQ 6527 Introduction

Introduction

This chapter describes the 6527 devices; lists what you need to get started,

software programming choices, and optional equipment; describes custom

cabling options; and explains how to unpack your board.

Thank you for purchasing a National Instruments 6527 device. The 6527

devices are 48-bit, parallel, isolated digital I/O interfaces for PCI bus

computers and PXI or Compact PCI chassis. The 6527 devices offer

48 chan nels of isolated dig ital data acquisition. Twenty-four of the

channels are optocoupler inputs and 24 are solid-state relay outputs. You

can sense digital levels up to 28 VDC and switch currents of up to 120 mA.

Digital filtering is available to eliminate glitches on the input lines. All

input lines can also generate interrupts on rising or falling edges to notify

you of changing data.

The PCI-6527 and PXI-6527 devices are completely jumperless DAQ

devices for PCI buses and PXI or CompactPCI chassis, respectively. All

devices in this family contain the National Instruments PCI MITE

interface.

The 6527 devices are ideal for low-voltage isolation and switching in both

industrial and laboratory environments. You can use the optically isolated

digital input lines to read the status of external digital logic at TTL and

non-TTL levels. You can use the solid-state relay outputs to switch external

devices, including those requiring high input currents, and to control digital

logic levels at both TTL and non-TTL levels. Because of the isolated nature

of the 6527 devices, you can decouple the noise and harsh ground of the

computer from external signals, and vice versa.

Detailed 6527 device specifications are in AppendixA, Specifications.