NuDAQ ACL-7120A, User Manual

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Table of Contents
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Table of Contents
Chapter 1 Introduction ....................................................... 1
1.1 Features .................................................................................... 2
1.2 Applications ............................................................................... 2
1.3 Specifications ............................................................................ 3
1.4 Software Support....................................................................... 5
1.4.1 ACLS-DLL1 ...........................................................................5
1.4.2 ACLS-LVIEW ........................................................................5
Chapter 2 Installation ......................................................... 7
2.1 What’s Included......................................................................... 7
2.2 Unpacking ................................................................................. 8
2.3 ACL-7120A Layout .................................................................... 9
2.4 Jumper and DIP Switch Description........................................ 10
2.5 Base Address Setting.............................................................. 11
2.6 Interrupt Settings ..................................................................... 13
2.7 Clock Frequency Settings ....................................................... 15
2.8 ACL-7120A Software Library Installation ................................ 16
Chapter 3 Signal Connections......................................... 17
3.1 Connector Pin Assignment...................................................... 17
3.2 Timer/counter signal pads ....................................................... 21
3.3 Interrupt Trigger Source .......................................................... 22
3.4 Clock Source Pads.................................................................. 23
3.5 Latch Digital Inputs.................................................................. 24
Chapter 4 Programming................................................... 25
4.1 I/O Registers Format ............................................................... 25
4.2 Digital I/O Programming .......................................................... 26
4.3 Programmable Interval Timer.................................................. 28
4.3.1 The Intel (NEC) 8254 ............................................................28
4.3.2 The Control Byte ...................................................................28
4.3.3 Mode definition......................................................................30
Warranty Policy ................................................................ 33