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BLUE CHIP AIP-8d User Manual

8 channel analogue input board
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AIP-8d
8 Channel Analogue
Input Board
User Manual

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Summary of Contents for BLUE CHIP AIP-8d

  • Page 1 AIP-8d 8 Channel Analogue Input Board User Manual...
  • Page 2 For permission in the UK contact Blue Chip Technology. Information offered in this manual is correct at the time of printing. Blue Chip Technology accepts no responsibility for any inaccuracies. This information is subject to change without notice.
  • Page 3 Amendment History Issue Issue Author Amendment Details Level Date 10/08/95 First approved issue, new front sheet. 19/12/95 Addition of EMC information to Technical Section. Errors corrected. Earlier part no. was 127-036. Filename was …\User_g.doc. 07/05/98 New window front cover and logo. See...

  • Page 4: Table Of Contents

    Selecting the A-D Range ..............5 Fitting the Card ..................6 CHAPTER 2 ...................7 Making the Right Connections............7 Input Mode..................7 Input Noise..................7 Typical Connection to the AIP-8d ............8 Analogue Connector (25-Way D-type Plug) ........8 CHAPTER 3 ...................9 Hardware Description ................9 µPD71054..................9 Timer Modes..................9 I/O Mapping ..................10...

  • Page 5: Introduction

    Page 1 INTRODUCTION Thank you for purchasing the AIP-8d analogue input card. The card provides the user with eight channels of 12 bit analogue inputs. The inputs range from ±50mV to ±5 volts, or 0 to +10 volts full scale.

  • Page 6: About The Manual

    This manual is organised into four chapters and two appendices. Each chapter covers a different aspect of using the AIP-8d. In order to get the best results from the product, the user is urged to read all chapters, paying particular note to Chapter 1 which deals with the initial installation of the card.

  • Page 7: Chapter 1

    The base address represents the first address that the card will use. The AIP-8d requires a total of 8 addresses (including the base address) for correct operation. All Blue Chip Technology boards are factory set to a default address of 300 hex.

  • Page 8: Interrupt Selection

    (additional communications cards, parallel ports or games ports etc.). If the interrupt channel chosen is available for use by the AIP-8d then set up the card as follows:- • Locate the row of header pins labelled “JP2”. These pins are marked “IRQ”...

  • Page 9: Selecting The A-D Range

    10 +10 volts + 1 volt ±5 volts ±500 mV x 10 x 100 +5 volts +50mV x 100 +10 volts +100mV ±5 volts ±50 mV x 100 Figure 3 Configuring the A-D Blue Chip Technology Ltd. 3.doc Page 5...

  • Page 10: Fitting The Card

    Screw the bracket in place and re-assemble the computer. NOTE: To avoid interference from other cards in the computer, if possible locate the card away from “noisy” cards such as hard disk controllers and network cards. 3.doc Page 6 Blue Chip Technology Ltd.

  • Page 11: Chapter 2

    Input Mode The input circuitry of the AIP-8d is configurable to handle signals ranging from ±50mV to ±5 Volts in bipolar modes and up to +10 Volts in uni-polar mode. All modes are single ended.

  • Page 12: Typical Connection To The Aip-8D

    Page 8 Making the Right Connections Chapter 2 Typical Connection to the AIP-8d voltage source single ended input channel 1 25 way connector Figure 5 Typical Connection to KFA8I Analogue Connector (25-Way D-type Plug) This connector is located at the front of the card and protrudes through the rear bracket.

  • Page 13: Chapter 3

    There are five basic modes of operation each providing a different output signal from the “T ” pin of the device. For the AIP-8d timers 0, 1 and 2 are connected in series to provide a longer delay period. Timer Modes The following modes of operation are possible by programming the control register within the µPD71054 .

  • Page 14: I/O Mapping

    Base + 3 Timer Control Register Base + 4 Function Control Register Base + 5 A-D Start Convert Base + 6 A-D Read Data Base + 7 Status Register Figure 6 I/O Mapping for AIP-8d 3.doc Page 10 Blue Chip Technology Ltd.

  • Page 15: Function Control Register

    Chapter 3 Hardware Description Page 11 Function Control Register This register controls various aspects of the AIP-8d operations such as input channel selection, conversion mode etc. Bits 4-7 Bit 7 Bit 6 Bit 5 Bit 4 Selects Channel 1 Channel 2...

  • Page 16: Starting A-D Conversions

    For software start conversions, it is also necessary to program the timer. The data to the timer is loaded with bit 2 of the function control register high. For specific details on programming the timer device for use on AIP-8d see the next section.
  • Page 17 This bit may be polled in order to determine when the data should be read. This method of operation ties the machine up for most of the time looking for the data ready flag to change state. Blue Chip Technology Ltd. 3.doc Page 13...
  • Page 18 2 clock cycles. This means the effective minimum time for a single counter is 500nS. For the AIP-8d, all three timers are cascaded such that only the first timer (Timer 0) in the chain is fed from the 4MHz clock.
  • Page 19 The sampling TIME for the system is 8 times the calculated time period of the pacer. NOTE: A pacer rate of less than 4µS is not permitted since this approaches the conversion time for the A-D. Blue Chip Technology Ltd. 3.doc Page 15...

  • Page 20: Chapter 4

    0.1% FS +/- 4 Counts ±5V Range 0.1% FS +/- 4 Counts ±12 Volts Input Common Mode Range Data Transfer Modes I/O Port Data Ready Flags Interrupt or Polling Interrupt Channels IRQ-2 to -7 3.doc Page 16 Blue Chip Technology Ltd.
  • Page 21 Maximum Time Interval 65.535mS Combined Timer Limits (Time Between Start Converts) Minimum Time Period 2µS Maximum Time Period 2.23 years BOARD CONNECTIONS Analogue Input Signals 1 x 50 way male D-type PC 8-bit ISA Blue Chip Technology Ltd. 3.doc Page 17...
  • Page 22 This product meets the requirements of the European EMC Directive (89/336/EEC) and is eligible to bear the CE mark. It has been assessed operating in a Blue Chip Technology Icon industrial PC. However, because the board can be installed in a variety of computers, certain conditions have to be applied to ensure that the compatibility is maintained.
  • Page 23 This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. EMC Specification A Blue Chip Technology Icon industrial PC fitted with this card meets the following specification: Emissions EN 55022:1995...

  • Page 24: Appendix A - Numbering Systems

    0 and the next column increments from 0 to 1. This 1 indicates that sixteen counts have occurred in the units column. The second column is termed the “sixteens” column. The following table shows how the three systems indicate successive numbers 3.doc Page 20 Blue Chip Technology Ltd.
  • Page 25 1. Each digit in the next column has a value of 2, the next 4, then 8 and so on. The following diagram illustrates this. BIT No DECIMAL VALUE To determine the decimal value of a binary pattern, add up the decimal number of each column containing a binary “1”. Blue Chip Technology Ltd. 3.doc Page 21...
  • Page 26 Hexadecimal upper nibble = (1 x 8) + (1 x 4) + (0 x 2) + (0 x 1) = 12 lower nibble = (0 x 8) + (1 x 4) + (1 x 2) + (0 x 1) = 6 The resulting value is C6 , since 12 equals C Decimal 3.doc Page 22 Blue Chip Technology Ltd.

  • Page 27: Base Address Selection

    Here a link is fitted to denote a binary or logic “0”, or left open to indicate a binary or logic “1”. The example shows a base address setting of 300 Blue Chip Technology Ltd. 3.doc Page 23...

  • Page 28: Appendix B - Pc Maps

    Reserved 378-37F Parallel Printer Port 1 380-38F Reserved for SDLC Communications, Bisync 2 3A0-3AF Reserved for Bisync 1 3B0-3BF Reserved 3C0-3CF Reserved 3D0-3DF Display Controller 3F0-3F7 Diskette Drive Controller 3F8-3FF Serial Port 1 3.doc Page 24 Blue Chip Technology Ltd.

  • Page 29: Pc/Xt Interrupt Map

    Appendix B PC Maps Page 25 PC/XT Interrupt Map Number Allocated to: Parity Timer Keyboard Reserved Asynchronous Communications (Secondary) SDLC Communications Asynchronous Communications (Primary) SDLC Communications Fixed Disk Diskette Parallel Printer Blue Chip Technology Ltd. 3.doc Page 25...

  • Page 30: Pc/At Interrupt Map

    IRQ 3 Serial Port 2 IRQ 4 Serial Port 1 IRQ 5 Parallel Port 2 IRQ 6 Diskette Controller IRQ 7 Parallel Port 1 DMA Channels Memory Refresh Spare Floppy Disk Drive Spare 3.doc Page 26 Blue Chip Technology Ltd.

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