ADLINK Technology ACL -6128 User manual

NuDAQ

ACL-6128
2-Channel Isolated
12-bit Analog Output Card
User’s Guide

@Copyright 1995~2000 ADLINK Technology Inc.
All Rights Reserved.
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
•
i
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

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•
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
•
1
1
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)

2
•
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

Introduction
•
3
•Linearity : ±1/2 LSB
•Trigger Mode : Software Trigger
•Data Transfer :Program Control
•Temperature coefficient :5 ppm typical, 15 ppm maximum
♦General Specifications
•Bus Type : PC/AT Bus
•Connector :Two 9-pin D-type female connector
•Operating Temperature : 0°C ~ 55°C
•Storage Temperature :-20°C ~ 70°C
•Humidity :5 ~ 95%, non-condensing
•Power Consumption :+5V @ 780mA typical, 1A max
•Dimension :163 mm (L) x 107 mm (M)
1.4 Software Support
1.4.1 ProgrammingLibrary
For the customers who are writing their own programs, we provide MS-
DOS Borland C/C++ programming library.
ACLS-DLL2 is the Development Kit for NuDAQ ISA-Bus Cards with
Analog I/O, windows 3.1/95(98)/NT. ACLS-DLL2 can be used for many
programming environments, such as VC++, VB, Delphi. ACLS-DLL2 is
included in the ADLINK CD. It need license.
1.4.2 LabView Driver
The ACLS-LVIEW includes the ACL-6126’s Vis, which is used to
interface with NI’s LabView software package. The ACLS-LVIEW
supports Windows-95(98)/NT. ACLS-LVIEW is included in the ADLINK
CD. It need license.

4
•
Installation
2
Installation
This chapter describes how to install the ACL-6128. At first, the contents
in the package and unpacking information that you should be careful are
described. The jumper and switch settings for the ACL-6128's base
address, reference voltage sources, and output voltage range are also
specified.
2.1 What You Have
In addition to thisUser's Manual, the package includes:
•ACL-6128 2-channel Isolated Analog Output Card
•ADLINK CD
If the card is missing or damaged, contact the dealer from whom you
purchased the product. Save the shipping materials and carton in case
you want to ship or store the product in the future.
2.2 Unpacking
Your ACL-6128 card contains sensitive electronic components that can
be easily damaged by static electricity.
The card should be done on a grounded anti-static mat. The operator
should be wearing an anti-static wristband, grounded at the same point
as the anti-static mat.
Inspect the card module carton for obvious damage. Shipping and

Installation
•
5
handling may cause damage to your module. Be sure there are no
shipping and handing damages on the module before processing.
After opening the card module carton, extract the system module and
place it only on a grounded anti-static surface component side up.
Again inspect the module for damage. Press down on all the socketed
IC's to make sure that they are properly seated. Do this only with the
module place on a firm flat surface.
Note :DO NOT APPLY POWER TO THE CARD IF IT HAS BEEN DAMAGED.
You are now ready to install your ACL-6128.
2.3 ACL-6128's Layout
CN1
CN2
VR4VR5VR6
VR10VR11VR12
VR3
VR1VR2
VR7VR8
VR9
SW1
JP1 JP2
JP3
JP4
JP5
JP6
JP7 JP8
JP9
JP10
TB1
TB2
6128 Isolated 2CH D/A ACRD
Figure 2.1 ACL-6128‘s Layout

6
•
Installation
2.4 Jumper and DIP Switch Description
You can change the ACL-6128's channels and base address by setting
jumpers and DIP switches on the card. The card's jumpers and switches
are preset at the factory. Under normal circumstances, you should not
need to change the jumper settings.
A jumper switch is closed (sometimes referred to as "shorted") with the
plastic cap inserted over two pins of the jumper. A jumper is open with
the plastic cap inserted over one or no pin(s) of the jumper.
2.5 Base Address Setting
The ACL-6128 requires 16 consecutive address locations in I/O address
space. The base address of the ACL-6128 is restricted by the following
conditions.
1. The base address must be within the range 200hex to 3F0hex.
2. The base address should not conflict with any PC reserved I/O
address. see Appendix A.
The ACL-6128's I/O port base address is selectable by an 8 position
DIP switch SW1 ( refer to Figure 2.1). The address setting for I/O port
from Hex 200 to Hex 3F0 is described in Table 2.1 below. The default
base address Hex 2C0 of the ACL-6128 is illustrated in the Figure 2.2
below.
SW1 : Base Address = 2C0H
1234567
ON DIP
8
A ( 9 8 7 6 5 4 3 X )
X

Installation
•
7
Figure 2.2 Default Base Address Setting
I/O port
address(hex) 1 A9 2 A8 3 A7 4 A6 5 A5 6 A4 7 A3 8 X
200-20F OFF
(1) ON (0) ON (0) ON (0) ON (0) ON (0) ON (0) X
210-21F OFF
(1) ON (0) ON (0) ON (0) ON (0) OFF (1) ON (0) X
:
(*) 2C0-2CF OFF
(1) ON (0) OFF (1) OFF (1) ON (0) ON (0) ON (0) X
:
300-30F OFF
(1) OFF (1) ON (0) ON (0) ON (0) ON (0) ON (0) X
:
3F0-3FF OFF
(1) OFF (1) OFF (1) OFF (1) OFF (1) OFF (1) ON (0) X
Table 2.1
(*) : default setting ON : 0
X : don't care OFF : 1
Note : A3, ..., A9 correspond to PC bus address lines.
How to Define a Base Address for the ACL-6128 ?
The DIP1 to DIP7 in the switch SW1 are one to one corresponding to
the PC bus address line A9 to A3. A0,A1, and A2 are always 0. If you
want to change the base address, you can only change the values of A9
to A3 ( shadow area of belo
w diagram). Following is an example,
which shows you how to define the base address asHex 2C0.
Base Address : Hex 2C0
2C0
1011000000
A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

8
•
Installation
2.6 Selecting D/A Range and Functions
There are two facts will effect the output voltage of ACL-6128 : reference
source and output range.
2.6.1 Reference Source Setting
The ACL-6128's D/A converter reference voltage source can be internal
generated or by external reference voltage from the Reference Voltage
Input (REF.IN) of connector CN1 and CN2. The settings of the reference
sources for CH1 and CH2 are controlled by the jumper JP4 and JP8,
respectively. The default setting is Internal Reference for both CH1 and
CH2, and is illustrated by the following diagram on next page.
Internal Reference
( Default ) External Reference Voltage
CH1
JP4
EXT
INT
JP4
EXT
INT
CH2
JP8
EXT
INT
JP8
EXT
INT
Figure 2.3 Reference Source Setting
After setting as internal reference source, two fixed and precision internal
-5V and -10V reference sources are provided by ACL-6128. The source
selection is set by JP3 (CH1) and JP7 (CH2), and the default setting of
internal reference voltage is-5V , which is illustrated as Figure 2.4 below :

Installation
•
9
Channel No. Internal -5V
( Default) Internal -10V
CH1
JP3
-10
-5
JP3
-10
-5
CH2
JP7
-10
-5
JP7
-10
-5
Figure 2.4 Internal Reference Voltage Setting
If users choose the external reference, both AC and DC voltage sources
can be used by the external reference, and the maximum input voltage is
+/-10V. The voltage sources can be input through Pin 3 of CN1 and CN2
connectors.
2.6.2 Output Range Setting
The output voltage range of ACL-6128 can be set either Bipolar or
Unipolar. The jumpers, JP1 and JP5 ( for CH1), and JP2 and JP9 ( for
CH2) are used for the setting and illustrated as Figure 2.5 below:
Channel No. Unipolar
( Default ) Bipolar
CH1
JP1 JP5
UP BP
UP
BP
JP1 JP5
UP BP
UP
BP
CH2
JP2 JP9
UP BP
UP
BP
JP2 JP9
UP BP
UP
BP
Figure 2.5 Ouput Range Setting

10
•
Installation
2.6.3Summary
According to the reference source and output range settings, users can
follow the below table to configure the output voltage of CH1 and CH2 for
different situations.
( JP1, JP3, and JP5 are for CH1; JP2, JP7, and JP9 are for CH2)
Jumper
Output Range JP3 for CH1
JP7 for CH2 JP1&JP5 for CH1 JP2 & JP9 for CH2
0 to +5V
Unipolar
(Default)
JP3/JP7
-10
-5
JP1 JP5
UP BP
UP
BP
0V to +10V
Unipolar
JP3/JP7
-10
-5
JP1 JP5
UP BP
UP
BP
-5V to +5V
Bipolar
JP3/JP7
-10
-5
JP1 JP5
UP BP
UP
BP
-10V to +10V
Bipolar
JP3/JP7
-10
-5
JP1 JP5
UP BP
UP
BP
Figure 2.6 Output Range Summary

Installation
•
11
2.7 Current Sink Range Setting
Not only the voltage output, the ACL-6128 also provide either 0-20mA or
4-20 mA current sink. In order to use the current sink range, you must set
the output voltage tounipolar. The jumper JP6 is corresponding to CH1,
and JP10 is used with CH2. The illustration Figure 2.7 below shows the
settings for the ACL-6128's current sink range.
Channel No. 4-20 mA
( Default ) 0-20 mA
CH1
JP6
0
4
JP6
0
4
CH2
JP10
0
4
JP10
0
4
Figure 2.7 Current Sink Setting
Note :
The current sink can only be used when the output voltage range set as internal
reference with -5V and unipolar mode.

12
•
Installation
2.8 Connector Pin Assignment
The ACL-6128 comes equipped with two D-9 female connectors -CN1
and CN2. Both of the CN1 and CN2 are located at the rear plate. CN1 is
used for outputting connection of CH1, CN2 is for CH2. Each of the
connector's pin assignment is specified as follows:
Legend :
V.OUT: Analog Voltage Output
I.SINK: Current Sink
A.GND: Analog Ground
REF.IN : Reference Voltage Input
+15V : +15V output
•
CN 1: Analog Output for Channel 1
1
2
3
4
5
6
7
8
9
A.GND
REF.IN
A.GND
A.GND
A.GND
I.SINK
A.GND
+15V
V.OUT
•
CN 2: Analog Output for Channel 2
1
2
3
4
5
6
7
8
9
A.GND
REF.IN
A.GND
A.GND
A.GND
I.SINK
A.GND
+15V
V.OUT