ADLINK Technology NuDAQ ACL-8454 Bedienungsanleitung
NuDAQ
ACL-8454
MultiFunctions
Counter / Timer Card
User’s Guide
@Copyright 1997~2000 ADLINK Technology Inc.
All Rights Reserved.
Manual Rev. 1.22: April 15, 2000
The information in this document is subject to change without
prior notice in order to improve reliability, design and function and
does not represent a commitment on the part of the manu-
facturer.
In no event will the manufacturer be liable for direct, indirect,
special, incidental, or consequential damages arising out of the
use or inability to use the product or documentation, even if ad-
vised of the possibility of such damages.
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copyright. All rights are reserved. No part of this manual may be
reproduced by any mechanical, electronic, or other means in any
form without prior written permission of the manufacturer.
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NuDAQis registered trademarks of ADLINKTechnology Inc.
Other product names mentioned herein are used for identification
purposes only and may be trademarks and/or registered
trademarks of their respective companies.
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Contents
•
i
Contents
Contents......................................................................i
How to Use This Guide.............................................iii
Chapter 1 Introduction .............................................1
1.1 Features..............................................................................3
1.2 Applications........................................................................3
1.3 Specifications.....................................................................4
Chapter 2 Installation...............................................5
2.1 What You Have ...................................................................5
2.2 Unpacking...........................................................................5
2.3 PCB Layout of ACL-8454 .....................................................6
2.4 Default Configurations........................................................7
2.5 Base Address Setting..........................................................8
2.6 Pin Assignment of Connector............................................10
2.7 Clock System....................................................................11
2.8 Counters Architecture .......................................................12
2.9 Clock Source Configurations............................................17
2.10 Gate Control Configurations.............................................19
2.11 Counter Outputs................................................................20
2.12 DuaI Interrupt System.......................................................21
2.13 Digital Input and Output....................................................23
2.14 Summary of Default Setting..............................................24
2.15 Notes for Installing More 8254 Chips.................................24
2.16 Daughter Board Connection .............................................25
Chapter 3 Registers Format...................................26
3.1 I/O Port Address................................................................26
3.2 Timer/Counter Registers...................................................27
3.3 Chip Select Register.........................................................27
ii
•
Contents
3.4 Digital Input Registers.......................................................28
3.5 Digital Output Register......................................................28
3.6 Low-level Programming...................................................30
Chapter 4 Applications...........................................32
4.1 Timer / Counter Connection..............................................32
4.2 Frequency Generator........................................................33
4.3 Pulse Width Measurement................................................35
4.4 Frequency Measurement..................................................36
4.5 Event Counter...................................................................38
Chapter 5 C/C++ Library..........................................39
5.1 Installation........................................................................40
5.2 W_8454_Initial...................................................................42
5.3 Set_Chip...........................................................................43
5.4 W_8454_Write_Counter.....................................................44
5.5 W_8454_Read_Counter.....................................................45
5.6 W_8454_Stop_Counter......................................................45
5.7 W_8454_DO.......................................................................46
5.8 W_8454_DI ........................................................................47
5.9 8454 Mode Functions........................................................49
5.10 W_8454_INT_Enable..........................................................50
5.11 W_8454_INT_Disable.........................................................51
Appendix 8254 Timer Chip Operation.....................52
Product Warranty / Service......................................55
How to Use This Guide
•
iii
How to Use This Guide
This manual is designed to help you use the ACL-8454. The manual
describes how to modify various settings on the ACL-8454 card to
meet your requirements. It is divided into 5 chapters:
•Chapter 1, "Introduction," gives an overview of the product features,
applications, and specifications.
•Chapter 2, "Installation & Configurations" describes the operation
method and multi-functions of the ACL-8454. Users should read
through this chapter to understand the configurations of the ACL-
8454. The chapter will also teach user how to install the ACL-
8454.
•Chapter 3, "Registers Format," describes the details of register
format of the ACL-8454, this information is very useful for the
programmers who want to control the hardware by low level
programming.
•Chapter 4, "Signal Connection & Applications," describes the
connectors' pin assignment and how to connect the outside signal
and devices to / from the ACL-8454. Some applications also be
introduced.
•Chapter 5, "C/C++ Library" introduces the C-language library for
operating the ACL-8454. Some examples are shown too.
Dieses Handbuch passt für folgende Modelle
2
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