Omega DAQ-12 User Manual

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DAQ-12

Data Acquisition Adapter

For 16 bit ISA compatible machines

Users Manual

INTERFACE CARDS FOR PERSONAL COMPUTERS

OMEGA ENGINEERING, INC. TEL: [phone]
One Omega Drive FAX: [phone]
P.O. Box 4047 Toll free: 1-800-826-6342
Stamford, CT 06907-4047 E-mail: [e-mail]

http://www.dasieee.com

WARRANTY/DISCLAIMER

DAQ-12 Users Manual 2

OMEGA ENGINEERING, INC., warrants this unit to be free of defects in materials and workmanship fo r a period of 13

months from the date of purchase. OMEGA warranty adds an additional one (1) month grace period to the normal one (1)
year product warranty

coverage on each product. If the unit should malfunction, it must be returned to the factory for evaluation. OMEGA’s
Customer Service Department will issue an Authorized Return (AR) number im mediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced at no charge. OMEGA’s
warranty does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling,
improper interfacing, operation o utside design limits, impr oper repair or unauthorized modif ication. This WARRANTY is
VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive
corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Com ponents which wear are not warranted, including but not limited to contact
points, fuses and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes
responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products
in accordance with information provided from OMEGA, either verbal or written. OMEGA warrants only that the parts
manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND
ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PU RPOSE ARE HEREBY D ISCLAIMED . LIMITA TION O F LIABILITY: The remedi es of purc haser set
forth herein are exclusive and the total liability of OMEGA with respect to this order, whether based on contract,
warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component
upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

to cover shipping and handling time. This ensures that OMEGA’s customers receive maximum

CONDITION S: Equipment so ld by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Comp onent”
under 10 CFR 21 (NRC), used in or with any nuclear installation or activity, medical application or used on humans.
Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans or
misused in any way, OMEGA assum es no respo nsibility as set forth in o ur basic WA RRAN TY/DISCLAI MER language, and
additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever
arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING
ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM
OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). THE ASSIGNED
NUMBER SHOULD THEN BE MARKED ON THE OUTSIDE OF THE RETURN PACKAGE AND ON ANY
CORRESPONDEN CE. THE PURCHASER IS RESPONSIBLE FOR SHIPPING C HARGES, FREIGHT, IN SURANCE AND
PROPER PACKAGING TO PREVENT BREAKAGE IN TRANSIT.

FOR WARRANTY
(1) P.O. Number under which the product was purchased,
(2) Model and serial number of the product under warranty, and
(3) Repair instructions and/or specific problems relative to the product.

FOR NON-WARRANTY
BEFORE contacting OMEGA:
(1) P.O. Number to cover the cost of the repair,
(2) Model and serial number of the product, and
(3) Repair instructions relative to the product.

RETURNS, please have the following information available BEFORE contacting OMEGA:

REPAIRS, consult OMEGA fo r current repair charges. Have the fo llowing information available

OMEGA’s policy is to make running changes, not model changes, whenever an improvem ent is possible. This af fords our
customers the latest in technology and engineering. OM EGA is a registered trademark of OMEGA EN GI N EERIN G, I N C. ©
Copyright 1999 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated or reduced to any electronic medium or machine readable form , in whole or in part, without prior
written consent of OMEGA ENGINEERING, INC.

Declaration of Conformity

DAQ-12 Users Manual 3

Manufacturer's Name: Omega Engineering, Inc.

Manufacturer’s Address: One Omega Drive

Stamford, CT 06907-0047

Application of Council Directive: 89/336/EEC

Standards to which
Conformity is Declared: * EN50081-2

(EN55022, EN60555-2, EN60555-3)

* EN50082-1
(IEC 801-2, IEC 801-3, & IEC 801-4)

Type of Equipment: Information Technology Equipment

Equipment Class: Light Industrial Equipment

Product Name: ISA Data Acquisition Card

Model Number : DAQ-12

OMEGAnet On-line Service: Internet e-mail:

DAQ-12 Users Manual 4

http://www.omega.com

Servicing North America

: One Omega Drive, Box 4047 E-mail: [e-mail]

USA

ISO 9001 Certified

Canada

: 976 Bergar E-mail: [e-mail]

Stamford, CT 06907-0047
Tel: [phone] FAX: [phone]

Laval (Quebec) H7L 5A1
Tel: [phone] FAX: [phone]

[e-mail]

:

For immediate technical or application assistance

USA and Canada

Mexico and Latin America

: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

Customer Service: 1-800-622-2378/ 1-800-622-BEST
Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

: Tel: [phone] FAX: [phone]

En Espanol: [phone]-7803 E-mail: [e-mail]

SM

:

SM

SM

Benelux

Czech Republic

France:

Germany/Austria

: Postbus 8034, 1180 LA Amstelveen, The Netherlands

: ul.Rude armady 1868, 733 01 Karvina-Hraniee

Servicing Europe

Tel: [phone]
Toll Free in Benelux: 0800 0993344
E-mail: [e-mail]

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342 E-mail: [e-mail]

9, rue Denis Papin, 78190 Trappes
Tel: [phone]
Toll Free in France: 0800-4-06342
E-mail: [e-mail]

: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone]
Toll Free in Germany: 0130 11 21 66
E-mail: [e-mail]

:

United Kingdom: One Omega Drive, River Bend Technology Drive

DAQ-12 Users Manual 5

ISO 9002 Certified

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that app ly.
OMEGA is constantly pursuing certification of it’s products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct but OMEGA Engineering, Inc.
accepts no liability for any errors it contains, and reserves the right to alter specifications without
notice. WARNING: These products are not designed for use in, and should not be used for, p atient
connected applications.

Northbank, Irlam, Manchester
M44 5EX, England
Tel: [phone]
FAX: [phone]
Toll Free in England: 0800-488-488
E-mail: [e-mail]

Table of Contents

4.2 Programming the 8254 Counter/Timer

28

4.1.9 8254 Control Word/Status Register

28

4.1.8 Multi-Function Timer Register

28

4.1.7 Clock Rate Register (high word)

28

4.1.6 Clock Rate Register (low word)

28

4.1.5 D/A Converter 1 Register

28

4.1.4 D/A Converter 0 Register

27

4.1.3 A/D Converter Data Register

27

4.1.2 Start of Conversion Register

25

4.1.1 Control Word Register

4.1 Register Description

4. Register Description and Programming

3. External Connections

22

2.8.1 External Interrupt

2.8 Interrupts

2.7 Direct Memory Access

2.6 Trigger Selection

19

2.5.2 External Clock

18

2.5.1 Internal Clock

2.5 Clock Selection

2.4 Base Address

2.3 Digital Input/Output

2.2 Digital to Analog Converters

2.1 Analog to Digital Converter

2. Circuit Board Description and Configuration

1.2 DAQ-12 Specifications

1.1 Installation

1. Introduction

DAQ-12 Users Manual 6

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8
8
9

10
10
14
16
16
17

20
21
22

23

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25
25

29

List of Figures and Tables

25

Table 4-1. DAQ-12 Address Map

15

Table 2-3. D/A Converter Mode Selection Options

14

Table 2-2. A/D Conversion Format Examples

12

Table 2-1. Recommended Input Ranges and Gain Settings

23

Figure 3-1. 62 Pin Connector Diagram

22

Figure 2-11. Jumpers J10 and J11 Configuration

21

Figure 2-10. Jumpers J8 and J9 Configuration

20

Figure 2-9. Jumper J2 Configuration

20

Figure 2-8. Pre-Divider External Clock Pulses

19

Figure 2-7. Sampling Rate External Clock Pulses

17

Figure 2-6. Jumper J3 Configuration

16

Figure 2-5. I/O Base Address Selection

14

Figure 2-4. Jumper J4 Configuration

13

Figure 2-3. Jumper J6 Configuration

11

Figure 2-2. Jumper J7 Configuration

10

Figure 2-1. Jumper J1 Configuration

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DAQ-12 Users Manual 7

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1. Introduction

The DAQ-12 is a high speed data acquisition adapter for IBM AT and compatible machines

DAQ-12 Users Manual 8

offering eight differential analog input channels with 16-bit resolution, two analog output
channels with 12-bit resolution and four digital input/output lines. Other features of the
DAQ-12 include:

Analog to Digital Converter



200 KHz maximum sampling rate



Bipolar input ranges from ±10mV to ±10 volts



Unipolar input ranges from 20mV to 10 volts



Programmable gain selection



Two DMA channels for continuous acquisition



Internal or external clock and trigger

Digital to Analog Converters



Two independent analog output channels



Output ranges of 0 to ±5 volts



Internal or external voltage reference



Two DMA channels for continuous output

Other Features



Interrupt on one of four sources including an external interrupt input



High density D-62 connector for reduced noise

1.1 Installation

1. Configure the DAQ-12 utilizing the instructions in Chapter 2: Circuit Board
Description and Configuration.

2. Ensure that power is not applied to the computer system.

3. Remove the cover according to the instructions provided by the system
manufacturer.

4. Insert the DAC-16 into any vacant ISA expansion slot. The board is secured to the
slot by installing the Option Retaining Bracket (ORB) screw.

5. Replace the system cover per manufacturer instructions.

1.2 DAQ-12 Specifications

DACK 5, 6, 7

DRQ 5, 6, 7

DMA Levels:

IRQ 2, 3, 4. 5, 6, 7, 10, 11, 12, 14, 15

Interrupt Levels:

0000H - FFFFH

I/O Address Range:

ISA 16-bit

Bus Interface:

491.4mA

374.9 mA

+12 volts

---

---

-12 volts

1204.9mA

1069.0 mA

+5 volts

---

---

-5 volts

I(ms)

I(t)

Power Supply

Power Requirements:

DAQ-12 Users Manual 9

I(t) = Typical Current / I(ms) = Maximum Statisical Current

2. Circuit Board Description and Configuration

The base address of the DAQ-12 is selected using switches SW1 and SW2. The operating

DAQ-12 Users Manual 10

mode of the DAQ-12 is controlled by jumpers J1 through J7, while DMA and interrupt
selections are set with jumpers J8 through J11. Connections to external equipment are made
through the high density 62-pin connector CN1.

2.1 Analog to Digital Converter

The analog to digital (A/D) section of the DAQ-12 accepts up to 8 differential or 16 single
ended inputs fr om the D- 62 connector. T hese inputs pa ss thr ough a multi plex er circui t whi ch
selects the channel to be converted. The selected input is then amplified and presented to the
A/D converter to b e d i g itized. T he d igital output of the A /D i s latched into a b uffer to be r ea d
by the computer. The multi plexer ci rcuit (MUX) sele cts one of the analog input channel s to be
input to the A/D converter. The typical characteristics of the multiplexer circuit are:



switching time: 0.5 us



settling time: 3.0 us

Before opera ting the DAQ-12, the multiplexer ci rcuit must be configured to accept either
differential or single-ended analog inputs. Single-ended mode measures the voltage
difference between the input signal and the analog ground reference of the DAQ-12 (e.g.
CH0+ and ground) while differential mode measures the voltage difference between two
input signals (e.g. CH0+ and CH0-).

Jumper J1 is used to configure the DAQ-12 for either single ended or differential inputs a
shown in Figure 2-1. Once configured, the input channel is software selectable through the
control word register.

5 6 7 8

1 2 3 4

8 Differential Channels

Figure 2-1. Jumper J1 Configuration

J1

5 6 7 8

1 2 3 4

16 Single Ended Channels