AXIOMTEK DASP-52282 Manual de usuario

DASP-52282

12-bit 330KHz Multifunction

w/ Free-Running Card

User’s Manual

Disclaimers

The information in this manual has been carefully checked and is

believed to be accurate. Axiomtek Co., Ltd. assumes no

responsibility for any infringements of patents or other rights of

third parties which may result from its use.

Axiomtek assumes no responsibility for any inaccuracies that

may be contained in this document. Axiomtek makes no

commitment to update or to keep current the information

contained in this manual.

Axiomtek reserves the right to make improvements to this

document and/or product at any time and without notice.

No part of this document may be reproduced, stored in a retrieval

system, or transmitted, in any form or by any means, electronic,

mechanical, photocopying, recording, or otherwise, without the

prior written permission of Axiomtek Co., Ltd.

September 2004, Version A1.0

Printed in Taiwan

iii

ESD Precautions

Integrated circuits on computer boards are sensitive to static

electricity. To avoid damaging chips from electrostatic discharge,

observe the following precautions:

Do not remove boards or integrated circuits from their anti-static

packaging until you are ready to install them.

Before handling a board or integrated circuit, touch an unpainted

portion of the system unit chassis for a few seconds. This helps

to discharge any static electricity on your body.

Wear a wrist-grounding strap, available from most electronic

component stores, when handling boards and components.

Trademarks Acknowledgments

AXIOMTEK is a trademark of Axiomtek Co., Ltd.

IBM is a registered trademark of International Business

Machines Corporation.

MS-DOS, and Windows 95/98/NT/2000 are trademarks of

Microsoft Corporation.

Phoenix-Award is a trademark of Phoenix-Award Software,

Inc.

IBM, PC/AT, PS/2, VGA are trademarks of International

Business Machines Corporation.

Intel and Celeron, Pentium III are trademarks of Intel

Corporation.

Other brand names and trademarks are the properties

and registered brands of their respective owners.

Table of Contents

Chapter 1 Introduction.....................................................1

1.1 Features ...................................................................2

1.2 Specifications..........................................................3

1.3 Accessories.............................................................5

Chapter 2 Hardware Installation....................................7

2.1 Board Layout...........................................................7

2.2 Signal Connections.................................................8

2.2.1 Signal Connection Descriptions ............................ 8

2.2.2 Digital Input Connector CON1 .............................. 9

2.2.3 Digital Output Connector CON2 ......................... 11

2.2.4 A/D, D/A and Timer/Counter Connector CON4 13

2.3 Jumper Setting ......................................................16

2.3.1 ADC Clock Source (JP4) ...................................... 16

2.3.2 DAC1, DAC2 Output Range Selection (JP8 and

JP9) ............................................................................ 16

2.3.3 A/D Single-Ended / Differential Selection (JP1) . 16

2.4 A/D, D/A and DI/DO Circuits and Wiring .............17

2.5 Quick setup and test.............................................19

Chapter 3 Theorem of Operation .................................25

3.1 Overview of DASP-52282 System Architecture

and Operation ................................................................25

3.2 Acquisition Modes of Analog Input.....................26

3.2.1 Polling Mode ......................................................... 26

3.2.2 Pacer Mode........................................................... 26

3.2.3 External Trigger Mode .......................................... 27

3.3 Double Buffering Mechanism For Fast Data

Acquisition .....................................................................30

3.3.1 On Board FIFO and FIFO Half Full Interrupt ......... 30

3.3.2 Circular Buffer for Massive Data Buffering .......... 32

3.4 Automatic Scan .....................................................32

3.5 Analog Input Range, ADC Code and AD Value ..33

Chapter 4 Register Structure and Format ...................37

4.1 Overview ................................................................37

4.2 I/O Register Map....................................................38

4.2.1 Digital Input Buffer Register .................................. 38

4.2.2 Digital Output Latch Register ............................... 38

4.2.3 General Status Buffer Register.............................. 38

4.2.4 Command Output Latch Register ....................... 40

4.2.5 A/D Data Register ................................................. 43

4.2.6 DAC Channel 1 Output Latch Register................ 43

4.2.7 A/D FIFO Data Register......................................... 43

4.2.8 DAC Channel 2 Output Latch Register................ 44

4.2.9 8254 Timer/Counter Register................................ 44

4.2.10 8254 Timer/Counter Control Words Register..... 44

4.2.11 Clear FIFO Content Register............................... 45

4.2.12 Clear Flag Register ............................................. 45

4.2.13 Enable DAC1 and DAC2 Output Register ......... 45

4.2.14 A/D ADC Software Polling Control Register...... 46

4.2.15 Enable ADC Register .......................................... 46

4.2.16 Disable ADC Register.......................................... 46

Chapter 5 Calibration .....................................................47

5.1 Calibration VR Description...................................47

5.2 D/A Calibration ......................................................48

5.3 A/D Calibration Steps ...........................................48

Appendix A Analog Input Gain Mode

Configuration .....................................................................49

Appendix B Dimension of DASP-52282 and

Accessories ..........................................................................51

This page does not contain any information.

DASP-52282 Card User’s Manual

Introduction 1

C h a p t e r 1

Introduction

The DASP-52282 is a high performance, PCI bus multi- function

card. It supports a 330KHz sampling rate, 16 single-ended or 8

differential AI, 16DI, and 16 DO. The DASP-52282 also features

an all new free-running mechanism to reduce the S/W

development efforts, and provides high/low gain options for

user's applications.

Advanced S/W Mechanism: Free-running

Free-running is a brand new data-retrieving mechanism to mainly

save software SW RD 30% -- 50% of the time and effort in

developing application programs. It helps software RD by using

several rows of simple programs to read data, instead of

countless numbers in the past.

Board identification- Serial Number on EEPROM

The DASP stores the serial number of each DASP in the

EEPROM before shipping. The PCI scan utility can scan all the

DASP and show users the serial number of each DASP, helping

the user to easily identify and access each card.

DASP-52282 Card User’s Manual

Introduction

Easily Developing Application Programs-Various Sample

Programs

The DASP-52282 series provides many user-friendly sample

programs to help users developing various application programs

in different units, such as VB, VC, BCB, and Delphi. And it also

supports the most popular Labview 6.0/7.0 drivers. The API of

the DASP-52282 has passed strict assembling tests that helps

users not necessarily writer such complicated and wordy

programs while using it.

Easy to Troubleshoot Hardware Resource- PCI Scan

Utility

The PCI scan utility can scan all the DASP products within the

system, and can show users all system resources, such as serial

numbers, IRQ, and I/O addresses. This lets users clearly see

through and immediately know whether all DASPs are working

normally, decreasing the time of searching confirmation.

 DASP-52282:

12-bit, 330 KHz multifunction board

 DASP-52282L:

12-bit, 330 KHz multifunction board w/o DAC

 DASP-52282H:

12-bit, 330 KHz high-gain multifunction board

 DASP-52282HL:

12-bit, 330 KHz high-gain multifunction board w/o

DAC

1.1 Features

 2 channel 12-bit D/A voltage output

 16 D/I and 16 D/O (TTL compatible)

 Maximum sampling rate up to 330KHz

 Supports free-running mechanism with 1K FIFO

 A/D trigger mode: software trigger, pacer

trigger, external trigger

 Supports software programmable gain

 Supports Windows® 98/NT/2000/XP, Labview

6.0/7.0 driver

 Supports VB, VC, BCB, Delphi sample program

DASP-52282 Card User’s Manual

Introduction 3

1.2 Specifications

Analog to Digital Converter (A/D)

 Channels: 16 Single-ended or 8 differentials

 Resolution: 12-bit

 FIFO size: 1K samples

 Sampling Rate: 330KS/s max.

 Conversion Time: 3µ s

 ADC input range: ±10V

 Input protect: 30 Vp-p

 On chip sample and hold.

 Programmable Gain

 Low Gain (DASP-52282/ DASP-52282L only)

Gain 0.5 1 2 4 8

Unipolar N/A 0~10V 0~５v0~2.5v 0~1.25v

Bipolar ±10V ±5v ±2.5v ±1.25v ±0.625v

 High Gain (DASP-52282H/ DASP-52282HL)

Gain 0.5 1 10 100 1000

Unipolar N/A 0~10V 0~1V 0~0.1V 0~0.01V

Bipolar ±10V ±5v ±0.5V ±0.05V ±0.005V

 Small signal bandwidth for PGA:

 Low Gain (DASP-52282/ DASP-52282L only)

Gain 0.5 1 2 4 8

Bandwidth 5MHz 5 MHz 4 MHz 1.3 MHz 600 KHz

 High Gain (DASP-52282H/ DASP-52282HL only)

Gain 0.5 1 10 100 1000

Bandwidth 1MHz 1 MHz 80 KHz 10 KHz 1 KHz

 Drift: 0.1 LSB @ gain 0.5

 Max. input voltage: ±20V

 Input impedance: 10000 MΩ6 pF║

 On chip sample and hold

DASP-52282 Card User’s Manual

Introduction

 AD Trigger Method:

Software, Pacer, External

(Pre-trigger, Post trigger, Middle trigger)

 Analog Input Data Transfer Method:

Polling, Interrupt, FIFO

 Operation mode:

Polling mode, Pacer mode, Interrupt mode,

External pre-trigger mode,

External post trigger mode,

External middle trigger mode

 DC Accuracy:

INL: +/- 1 LSB @ gain 0.5

DNL: +/- 1LSB @ gain 0.5

 AC Accuracy: SNR: 71dB @ gain 0.5

 Automatic Scan Mechanism

Digital to Analog Converter (D/A)

(only DASP-52282 / DASP-52282H)

 Channels: 2 independent

 Resolution: 12-bit, analog device AD7945BR

 Output range:

Bipolar: -9.9998V ~ 10.0003V @ -10~+10V

Unipolor: 0.0003V ~ 10.0002V @ 0 ~ 10V

 Accuracy: +/- 0.5 LSB

 Offset: 1%

 Slew Rate: 13V/µs

 Drift: +/- 0.5 LSB

 Output Driver: ±5mA

 Max. Transfer Rate: 20µ S/s

 Output Impendence: 15 Ω

 Settling Time: 0.6 ns to 0.01% for Full Scale

Step

 Linearity: ±1/2 bit

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