ADLINK Technology ACL -6128 Bedienungsanleitung

NuDAQ



ACL-6128

2-Channel Isolated

12-bit Analog Output Card

User’s Guide

Manual Rev. 2.22: June 29, 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 manufacturer.

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 advised of the possibility of

such damages.

This document contains proprietary information protected by 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.

Trademarks

ACL-6128 is registered trademarks of ADLINK Technology 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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Table of Contents

•

Table of Contents

Chapter1 Introduction........................................................................1

1.1 Features............................................................................................................1

1.2 Applications ......................................................................................................2

1.3 Specifications ...................................................................................................2

1.4 Software Support..............................................................................................3

1.4.1 Programming Library.......................................................................3

1.4.2 LabView Driver...................................................................................3

Chapter2 Installation.........................................................................4

2.1 What You Have..................................................................................................4

2.2 Unpacking.........................................................................................................4

2.3 ACL-6128's Layout.............................................................................................5

2.4 Jumper and DIP Switch Description.................................................................6

2.5 Base Address Setting.......................................................................................6

2.6 Selecting D/A Range and Functions .................................................................8

2.6.1 Reference Source Setting...............................................................8

2.6.2 Output Range Setting.......................................................................9

2.6.3 Summary...........................................................................................10

2.7 Current Sink Range Setting.............................................................................11

2.8 Connector Pin Assignment .............................................................................12

2.9 Signal Connection...........................................................................................13

2.9.1 Voltage Output Connection...........................................................13

2.9.2 Current Sink Connection...............................................................13

2.9.3 Floating Load without external power supply..........................14

Chapter3 Low-Level Programming....................................................15

3.1 I/O Port Address Map......................................................................................15

3.2 D/A Data Format..............................................................................................16

3.3 Converted Data Representation......................................................................17

3.3.1 Unipolar Numbering........................................................................17

3.3.2 Bipolar Numbering..........................................................................17

3.4 D/A Conversion Sequence..............................................................................18

Chapter4 High-Level Programming....................................................19

4.1 Installation.......................................................................................................19

4.3 C Language Library.........................................................................................20

4.3.1 _6128_Initial.....................................................................................20

4.3.2 _6128_Switch_Card_No................................................................21

4.3.3 _6128_DA..........................................................................................21

•

Table of Contents

Chapter5 Calibration........................................................................22

5.1 What do you need............................................................................................22

5.2 VR Assignment................................................................................................22

5.3 Internal Reference Source Adjustment ..........................................................23

5.4 Bipolar Output Calibration..............................................................................23

5.5 Unipolar Output Calibration............................................................................24

5.6 Current Sink Calibration..................................................................................24

Product Warranty/Service..................................................................26

How to Use This Guide

This manual is written to help you use the ACL-6128. The manual

describes how to modify various settings on the ACL-6128 card to meet

your requirements. It is divided into three chapters:

•Chapter 1, "Introduction," gives an overview of the product features, applications, and

specifications.

•Chapter 2, "Installation," describes how to install the ACL-6128. The layout of ACL-

6128 is shown, the jumper setting for base address, reference voltage source, and D/A

output ranges. Besides, all connectors' pin assignment and signal connection are also

specified.

•Chapter 3

, "Low-Level Programming," describes the details of register structure and

how to program the ACL-6128 for analog output in basic I/O primitive functions.

•Chapter 4

, "High-Level Programming," describes how to program the ACL-6128 for

analog output in high-level C language library.

•Chapter 5

, "Calibration," describes how to calibrate the ACL-782 for accurate

measurement.

•Appendix A, "I/O Port Address Map,", gives an overview I/O address map.

Introduction

•

Introduction

The ACL-6128 is an analog output card for the IBM Personal Computer

and compatibles with two separate D/A converters that can be updated

simultaneously. In addition to 12-bit resolution and 16KHz throughput on

each DAC, both voltage and current outputs are supported. It is an ideal

analog output device for cost effective solution in real industrial

applications.

The ACL-6128 is designed to meet high voltage isolation on each

analog output channel. Opto-isolators give 5000 Vrmsisolation to protect

both your PC and peripherals from damage due to high voltages on the

inputs. After youturn on or reset your PC system, both channels will reset

the output voltage to 0V in unipolar or bioplar output range.

The ACL-6128's register structure and jumper settings are fully

compatible with Advantech PCL-728. It will be no extra learning time for

the customers who are familiar with Advantech products. In addition,

many extra enhancements for reliability and performance are also

designed in the ACL-6128, such as surface mount components design,

and single +5V power consumption only, ...,etc.

1.1 Features

The ACL-6128 2-channel Isolated D/A Card provides the following

advanced features:

•Two independent 12-bit analog output channels

•> 5000 Vrms Isolation(channel-to-channel, input-to-output)

•

Introduction

•12-bit resolution, double-buffered D/A converter

•Multiple output ranges

Bipolar : ±10V, ±5V

Unipolar : 0~10V, 0~5V

Sink : 0~20mA, 4~20mA current loop

•Integral DC-to-DC converter for stable output operation

•Compactsize -only half-size PCB

•4-layer PCB with an integral ground plane

•Fully compatible with Advantech PCL-728

1.2 Applications

•Arbitrary waveform generation

•Control of values, switches, relays

•Programmable voltage source

•Servo Control

•Programmable current sink

1.3 Specifications

The ACL-6128 provides the following specifications:

♦

Analog Output (D/A)

•Output Channel : 2 Isolated channels

•Resolution : 12-bit, double-buffered

•Setting Time : ≤30 µs

•Throughput : 16 KHz

•Output Range : (Jumper selectable)

Bipolar Voltage : ±10V, ±5V

Unipolar Voltage : 0~10V, 0~5V

Current Loop( sink) : 0~20mA, 4~20mA

•Reference Voltage :

Internal : -5Vand -10V

External : DC or AC, ±10V (max.)

•Output Drive Current : ±5mA

•Current Loop Excitation Voltage : +8V ( min.), 36V( max.) for 0~20mA or

4~20mA.

•Isolation Voltage : ≥500VDC

•Converter : AD7541 or equivalent

•Accuracy : ±0.012% of FSR

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