Brainboxes AD-593 Manual de usuario
2.1 EDITION Feb 1995
da
1200Series
PC AD1200 Reference
Thank You For Buying
PC AD1200
Interface!
We proudly present the PC AD1200 Interface Board.
The PC AD1200 Interface allows the PC user to measure
and control ’Real World’ analogue signals. AD1200 is 100%
compatible with the widely available DT2811 card and yet has
features that surpass and out perform that product. Blending the
discrete digital domain of computers with the infinitely variable
Analogue realm brings great power to the user, allowing control
and monitoring of almost any process. AD1200’s mix of high
performance Analogue to Digital input, Digital to Analogue
output, Digital input and Digital output hardware with a fully
functioned software package provides a straight forward route to
excellence in signal acquisition. Extend your grasp with AD1200.
Your board is designed and manufactured in England, and
our policy is one of complete support to our dealers and direct
to our users. Please note, PC AD1200 is designed ’in house’ and
is completely understood by our staff. Its great strength is the
software support we give it. Our intention is to supply the
software and any technical information you may need to allow
you to exercise complete control over the AD1200 board and
software. After searching the manuals, do not hesitate to contact
us on our HOTLINE numbers given on Intro Page-2, if you
need help.
We are particularly keen to provide new operating system
or language drivers to expand the range of applications using our
PC AD1200 board.
We trust that if you adhere to the following procedures you
will enjoy many years of useful service from your AD1200 card.
Intro-3
PC AD1200 Reference
PC AD1200 MANUAL____________________
The Layout Of This Manual._________________________
This manual is a complete description of how to install,
configure and use the PC AD1200 interface board.
The PC AD1200 card, like our other PC add on boards, is
an extremely easy to use and understand implementation of
Analogue interfacing for IBM PC and compatible computers. We
have truly tamed the Analogue world and the PC BUS allowing
you to get the most out of your data acquisition system!
Chapter 1, Introduction To The Analogue
World, describes the features of the range of AD1200 cards,
discusses the fundamentals of Analogue to Digital conversion,
Digital to Analogue conversion and explains exactly how the
AD1200 range implements these. Downwards compatibility with
the DT2811 is discussed as well as the extra high performance
features that distinguish the AD1200 range, this improved design
whilst retaining exact compatibility with other manufacturers
products gives AD1200 extreme flexibility in its application and
use. Converter throughput, interrupt and DMA driven i/o are
explained together with a complete description of the AD1200’s
timing and control modes.
Chapter 2, Installation Guide, shows you how to
configure and install the PC AD1200 board in one of the
expansion slots of your computer and gives the default setting of
all configurable options. All settings for I/O base address, IRQ
and DMA channels, ADC and DAC voltage ranges are shown.
Details of how to connect up the AD1200 to the users system
are given.
Intro-4
PC AD1200 Reference
Chapter 3, The AD1200 Register Map, details the
programmable status and control registers on the card. Whilst
most users will use the bundled driver software and so find this
information be be unnecessary it is included to make this manual
as complete as possible, to allow you to cover every eventuality.
Chapter 4, Calibration, shows how to perform a
calibration of the AD1200 analogue circuitry. The use of the
calibration software, the position and function of the onboard
trimmer pots and use of ancillary equipment are all described.
Calibration should be performed at regular intervals to ensure
that the AD1200 remains in specification, and that your analogue
measurements are traceable back to nationally and internationally
recognised standards.
Chapter 5, Technical Specification, gives the
complete technical specification on the AD1200 series of cards.
The Cumulative Index covers the complete contents of
the manual.
Intro-5
PC AD1200 Reference
Outline Contents.________________
Chapter 1. Introduction To The Analogue World.
Chapter 2. Installation Guide.
Chapter 3. The AD1200 Register Map.
Chapter 4. Calibration.
Chapter 5. Technical Specification.
Cumulative Index.
Chapter 1 Introduction To The Analogue World.___________________________________________
Introduction. 1
The PC AD1200 Range Of Cards. 2
From AD1221 Up To AD1200. 3
DT2811 Superset. 4
Introduction To Analogue. 5
Unipolar Vs Bipolar Voltage Ranges. 8
Differential Vs Single Ended Signals. 8
The Analogue To Digital Converter. 9
Input Channel Selection. 10
Programmable Gain. 11
Analogue Input Ranges. 11
Programmed I/O, Interrupts and DMA. 12
Programmed I/O. 12
Interrupt Driven I/O. 12
DMA, Direct Memory Access. 13
The Pacer Clock. 13
A/D Throughput and Pipelining. 14
A/D Operating Modes. 16
A/D Modes 0, 1, 2 & 3. 17
Mode 0, Single Conversions. 17
Mode 1, Continuous Conversions, Int Trig & Clock. 18
Mode 2, Continuous Conversions, Ext Trig Int Clk. 18
Mode 3, Continuous Conversions, Ext Trig & Clock. 19
The Analogue To Digital Converter. 20
D/A Programmed I/O. 20
Intro-6
PC AD1200 Reference
D/A Interrupts and DMA. AD1200 Card Only. 20
Digital I/O Ports. 21
Digital Port Programmed I/O. 21
Digital Port Interrupts and DMA. AD1200 Only. 21
Screw Terminal Board. 22
4-20mA Current Conversion Options. 23
Chapter 1 List Of Figures._______________________
Figure 1-1. AD1200 Series Common Properties. 2
Figure 1-2. AD1200 Series Options. 3
Figure 1-3. AD1200 card Vs DT2811. 5
Figure 1-4. One Bit A/D Conversion. 6
Figure 1-5. Two Bit A/D Conversion. 6
Figure 1-6. Three Bit A/D Conversion. 7
Figure 1-7. Bit Weights And Resolution. 8
Figure 1-8. Mode 0 & 1 Bits. 16
Figure 1-9. Extended Mode Bits. 17
Chapter 2 Installation Guide.__________________________
Introduction. 24
Configuring The PC AD1200 Board. 24
Setting The PC AD1200 I/O Address. 26
Using More Than One PC AD1200 Board. 33
Interrupt Selection. 33
Setting The Interrupt Jumper Block. 34
DMA Selection. AD1200 Only. 35
Setting The DMA Channel Jumper Block. 36
D/A Output Range Selection. 37
A/D Configuration. 38
8254 Counter Timer Pinouts. 43
Installing The PC AD1200 Board In The Computer. 44
AD1200 Backplane Signals. 46
Signal Types. 47
Wiring Guidelines. 49
Twisted Pair Cables. 49
Intro-7
PC AD1200 Reference
Shielded Cables. 49
Input Voltage. Overvoltage Warning! 50
Problems! 50
Chapter 2 List Of Figures._______________________
Figure 2-1. AD1200 Card Layout. 25
Figure 2-2. AD1210 AD1211 Card Layout. 26
Figure 2-3. AD1220 AD1221 Card Layout. 26
Figure 2-4a. AD1200 Factory Set DIP Switches. 27
Figure 2-4b. AD1210-21 Factory Set DIP Switches. 28
Figure 2-5. I/O Addresses To Avoid. 28
Figure 2-6. Likely I/O Address. 29
Figure 2-7a. AD1200 Base Addresses. 29
Figure 2-7b. AD1210-21 Base Addresses. 31
Figure 2-8. The IRQ Jumper Block. 35
Figure 2-9. The DMA Jumper Block. 37
Figure 2-11. A/D Channel Input Select. 39
Figure 2-12. AD1200 A/D Input Range Selection. 40
Figure 2-13. AD1210 A/D Input Range Selection. 41
Figure 2-14. AD1220 A/D Input Range Selection. 42
Figure 2-15. OUT0 Via Digital Input Bit 7, Pin36. 43
Figure 2-16. Remove Cover Mounting Screws. 44
Figure 2-17. Removing The PC Cover. 44
Figure 2-18. Removing Blanking Cover. 45
Figure 2-19. Inserting The PC AD1200 Card. 45
Figure 2-20. AD1200 J2 Pin Outs. 46
Chapter 3 AD1200 Register Map._____________________________
Introduction. 51
I/O Address Map. 51
Register Types. 52
Read Write Assignments. 52
Power Up Conditions. 53
The A/D Control Status Register. 53
Bit 7 A/D Done, Read Only. 53
Bit 6 A/D Error, Read Only. 54
Intro-8
PC AD1200 Reference
Bit 5 A/D Busy, Read Only. 54
Bit 4 Clear A/D Error, Write Only. 54
Bit 3 DMA Enable, Read / Write. AD1200 Only 54
Bit 2 Interrupt Enable, Read / Write. 55
Bits 0 & 1. Mode Bit 0 & 1. Read / Write. 56
Initialising The A/D Converter. 57
The A/D Gain Channel Register. 58
Bits 6 & 7. Gain select. Read / Write. 58
Bits 4 & 5. Reserved For Future Expansion. R/W. 59
Bits 0, 1, 2 & 3. Channel Select. Read / Write. 59
The A/D Converter Input Registers. Read Only 60
The DAC0 D/A Converter Output Registers. 62
The DAC1 D/A Converter Output Registers. 63
The Digital Output Port Register. Write Only 65
The Digital Input Port Register. Read Only 66
The Timer & Extended Mode Register. Read/ Write 66
Bits 0-5, TIMER Pacer Clock Divisor Bits. R/W. 67
Bits 6 & 7 XMODE, Extended Mode Read/Write. 69
The 8254 Counter Timer Registers. Read/ Write 70
Chapter 3 List Of Figures._______________________
Figure 3-1. AD1200 Register Map. 51
Figure 3-2. A/D Control Status Register. 53
Figure 3-3. Mode 0 & 1 Bits. 56
Figure 3-4. AD1200 Extended Mode Bits. 57
Figure 3-5. AD1210-21 Extended Mode Bit. 57
Figure 3-6. A/D Gain Channel Register. 58
Figure 3-7. Gain Selection. 59
Figure 3-8. Channel Selection. 60
Figure 3-9. ADC Low Byte Input Register. 61
Figure 3-10. ADC High Byte Input Register. 62
Figure 3-11. DAC0 Low Byte Output Register. 63
Figure 3-12. DAC0 High Byte Output Register. 63
Figure 3-13. DAC1 Low Byte Output Register. 65
Intro-9
PC AD1200 Reference
Figure 3-14. DAC1 High Byte Output Register. 65
Figure 3-15. DIGOUT Output Register. 65
Figure 3-16. DIGIN Output Register. 66
Figure 3-17. TIMEREX Register. 67
Figure 3-18. Pacer Clock Divisor 68
Figure 3-19. AD1200 Extended Mode Bits. 70
Figure 3-20. AD1210-21 Extended Mode Bit. 70
Figure 3-21. 8254 Counter Timer Register Map. 71
Chapter 4 Calibration.____________________
Introduction. 72
Calibrating The Digital To Analogue Output. 72
Outline. 73
Equipment Required. 73
DAC0 Calibration Procedure. 74
DAC1 Calibration Procedure. 75
Calibrating The Analogue To Digital Input. 77
Outline. 77
Equipment Required. 78
ADC Calibration Procedure. 78
Chapter 4 List Of Figures._______________________
Figure 4-1. DAC Trimmer Pot Layout. 73
Figure 4-2. DAC0 Calibration Wiring Diagram. 75
Figure 4-3. DAC Calibration Values. 75
Figure 4-4. DAC1 Calibration Wiring Diagram. 76
Figure 4-5. ADC Trimmer Pot Layout. 77
Figure 4-6. ADC Calibration Wiring Diagram. 78
Figure 4-7. Unipolar ADC Calibration Values. 79
Figure 4-8. Bipolar ADC Calibration Values. 80
Chapter 5 Technical Specification.______________________________
Introduction. 81
Analogue Inputs. 81
Analog Outputs 82
Digital I/O 82
Pacer Clock. 83
Power Consumption. 83
Intro-10
Introduction AD1200 Reference
CHAPTER 1
INTRODUCTION TO
THE ANALOGUE
WORLD.
Introduction.____________
This chapter describes the features of the range of AD1200
cards highlighting the differences between them, discusses the
fundamentals of Analogue to Digital conversion, Digital to
Analogue conversion and explains exactly how the AD1200
range implements these.
Downwards compatibility with the DT2811 is discussed as
well as the extra high performance features that distinguish the
AD1200 range, this improved design whilst retaining exact
compatibility with other manufacturers products gives AD1200
extreme flexibility in its application and use.
Converter throughput, Programmable Gain input, interrupt
and DMA driven i/o are explained together with a complete
description of the AD1200’s timing and control modes.
Note that throughout this manual reference is made to the
AD1200 series as either AD1200 series or as AD12XX card,
meaning that this information is common to all cards in the
AD1200 family.
When AD1210, AD1211, AD1220, AD1221 or the term
’AD1200 card’ the information is specific to those particular
cards mentioned.
Chapter 1 Page 1
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