DPC 10 Data Acquisition Card User Manual
Contents
1. 6 3 1 Selecting the Base Address A 6 82 Port Maps sde eee SEENEN 6 4 0 Electrical Options ss 7 4 1 Input Output Conpechons teser resrnssrnssrrnsrrnnsensna 7 4 2 Pin Connection Details 7 4 3 Frequency Source Input 8 4 4 On board Frequency Gelechon nereerresiresreneene 9 le CEET 9 4 6 Opto isOlation EE 10 5 0 Operating Guide 11 5 1 Software Interface eccceeeceeeeeeeeeeeeceeeeeeeeeeeeeeesaaeeeeneeessaneeas 11 5 2 Programming Guides irs psie neiere rano tiean eaka ieia 11 5S Example Programi ssr tie ser eeineeteetn at 11 Blue Chip Technology Ltd dpc 10 doc Page 1 Outline Description 1 0 OUTLINE DESCRIPTION The DPC 10 board provides two five channel counter timer devices Each channel has 16 bit capability and can be used as an event timer a counter or a frequency generator Channels can be cascaded to give higher resolution These devices are particularly powerful and the data sheet should be consulted for the full range of function available Blue Chip Technology Ltd dpc 10 doc Page 2 Electromagnetic Compatibility Electromagnetic Compatibility EMC 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 It m2. DPC 10 10 Channel TTL Digital Counter Timer Board Blue Sie Technology User Manual DPC 10 User Manual Document Part N 0127 0201 Document Reference DPC 10 10127 0201 Doc Document Issue Level 1 0 Manual covers PCBs identified DPC 10 Rev A All rights reserved No part of this publication may be reproduced stored in any retrieval system or transmitted in any form or by any means electronic mechanical photocopied recorded or otherwise without the prior permission in writing from the publisher 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 All trademarks and registered names acknowledged Blue Chip Technology Ltd Chowley Oak Tattenhall Chester Cheshire CH3 9EX Telephone 01829 772000 Facsimile 01829 772001 Website http www bluechiptechnology co uk Amendment History Issue Issue Amendment Details Level Date 05 05 89 0 8 18 07 97 Window front cover and logo 27 03 01 S ORR LOGO Updated Diagrams added Contents 1 0 OUTLINE DESGSCHIRTION in 2 Electromagnetic Compatibility EMT 3 EMG Specification oiiire iiaeie 4 2 0 SPECIFICATION a 5 2 1 Electrical Gpechftcation 5 2 2 Physical Specification c ccecececeeeeeeeceeceeeeeeeeseeeeeeseaeeseneeenes 5 3 0 User AdjUStMent AA
3. Failure to observe these recommendations may invalidate the EMC compliance Warning 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 Radiated Conducted Immunity EN 50082 2 1995 incorporating Electrostatic Discharge Radio Frequency Susceptibility Fast Burst Transients Blue Chip Technology Ltd Class A Class A amp B IEC 801 2 1984 Performance Criteria B IEC 801 3 1984 Performance Criteria A IEC 801 4 1988 Performance Criteria B dpc 10 doc Page 4 Specification 2 0 SPECIFICATION 2 1 Electrical Specification 10 Power dissipation IRQ 2 7 Selectable ional 2 2 Physical Specification Blue Chip Technology Ltd dpc 10 doc Page 5 User Adjustments 3 0 USER ADJUSTMENTS 3 1 Selecting the Base Address The board may be located in any 62 pin slot in the PC motherboard but must be set up to appear at a specified position or address in the port map Available positions are shown in the IBM PC Technical Reference Guide However for those who do not possess a copy of this document a good place is the location normally allocated to the prototyping card as supplied by IBM This address is 300 Hex or 768 Decimal All Blue Chip Tec
4. an only be stopped by pressing Control and Break simultaneously on the PC keyboard Whilst every effort has been taken to ensure that the information provided is accurate Blue Chip Technology cannot assume responsibility for any errors in this manual or their consequences Should any errors be detected the company would greatly appreciate being inofrmed of them A policy of continuos product development is operated resulting in the contents of this document being subject to change without notice Blue Chip Technology Ltd dpc 10 doc Page 12
5. eets the requirements for an industrial environment Class A product subject to those conditions The board must be installed in a computer system which provides screening suitable for the industrial environment Any recommendations made by the computer system manufacturer supplier must be complied with regarding earthing and the installation of boards The board must be installed with the backplate securely screwed to the chassis of the computer to ensure good metal to metal i e earth contact Most EMC problems are caused by the external cabling to the board Boards fitted with IDC ribbon cable connectors on the metal mounting bracket require particularly careful installation of the external cabling The cabling must be totally screened the type of ribbon cable which is rolled to a round form with a braided wire screen is best Standard ribbon cable will not be adquate unless it is contained wholly within the cabinetry housing the industrial PC The mounting bracket of the board includes a captive nut as a screen earth point Connect the screen of the cable to this by the shortest possible wire Blue Chip Technology Ltd dpc 10 doc Page 3 Electromagnetic Compatibility e Ensure that the screen of the external cable is bonded to a good RF earth at the remote end of the cable e Cables which connect externally to boards at TTL levels should not exceed to two metres in length This restriction does not apply to opto isolated boards
6. for I O channel signal connection If access to individual channels is required a 50 way IDC ribbon cable may be used to connect the I O channels to a 50 way terminal block available from Blue Chip Technology as Part Number ST 24 The pins are numbered as shown in the following diagram Pins 1 48 contain the I O channels and pins 49 and 50 are connected to digital ground When the connector is view from the back of the system odd numbered pins are on the left and even numbered pins are on the right with pin at the top of the connector 4 2 Pin Connection Details Function Pm Pn Function w o ae 5 o Log Sources ae 7 o 0 8 Sources ausef 90 Log Sources Connector Pin View View with gold edge connectors downwards Note 100mA Max from pins 47 48 Blue Chip Technology Ltd dpc 10 doc Page 7 Electrical Options 4 3 Frequency Source Input Two possible sources of frequency input are available on the DPC from the PC bus or from an on board oscillator These inputs may be used for interrupt generation event timing and many other functions They are fed into the clock input on IC s 5 and 6 The frequency source is selected for ICS and IC6 using LKB and LKC respectively as shown below For IC5 LKB LKB S On Board O Bus Frequency E Frequency Source E Source B20 on E PC Bus O Q For IC6 LKC LKC O On Board AN Bus Frequency Frequency Source S Source B20 on S C PC Bus e O Note that the bus
7. frequency source should be 4 77MHz on all true PC compatibles Some PC s do not conform to the IBM specification and the bus frequency may be 8MHz or higher Since this is non standard the DPC 10 and other cards may not operate correctly in such machines Blue Chip Technology Ltd dpc 10 doc Page 8 Electrical Options 4 4 On board Frequency Selection An on board oscillator XL1 is provided to give known frequencyes for use by the 9513 chips These are linked to the clock input on IC5 and IC6 using CLKA and CKLB For IC5 This shows a 2MHz input selected for ICS This shows a 0 5MHz input selected for IC6 Note that only one link on JP1 and one on JP2 can be fitted at any one time 4 5 Interrupts On IC6 it has been arranged that OUT 1 and OUT 2 channels can be linked to selected interrupt lines OUT 1 from IC6 can be linked to IRQ2 3 or 4 OUT 2 from IC6 can be linked toIRQ 5 6 or 7 as shown below PES CO IRQ HEIN AEN 2 3 4 5 6 IC6 IC6 Out 1 Out 2 The diagram shows OUT 1 from IC6 linked to IRQ 3 OUT 2 from IC6 linked to IRW 7 Blue Chip Technology Ltd dpc 10 doc Page 9 Electrical Options 4 6 Opto isolation An option is available to opto isolate2 inputs These inputs are connected via pins 43 44 and 45 46 on the IDC connector See 4 2 In order to utilise this facility the user must fir two chips IC8 74LS 14 IC9 ILCT 6 The current must be limited by fitting external resistors to s aui
8. hnology cards are preset to this address at the factory However no two devices should be used while set to the same address since contention will occur and neither board will work If your machine contains a card with a conflicting address then another reasonably safe address is 200 to 21F Hex A set of links is provided on the board to set the base address of the board within the IBM PC port map The address is in binary with the presence of a link representing a 0 and the absence of a link representing a 1 To set the base address to 768 Decimal 300 Hex set the following pattern on the links as indicated Figure 1 Selecting the Base Address Note View board with back panel on RHS Middle 8 bit of port address on links e DEU ver 4 8 10 20 40 80 100 200 More example addresses are shown in Appendix A Note No two cards must ocupy the same address 3 2 Port Map The DPC 10 card has two 9513 counter timer chips Each chip has 5 counter inputs and may be programmed to perform a wide variety of functions These functions are programmed via an address and data port for each 9513 The board occupies four read write addresses two for each chip in the IBM PC port map Write Command Blue Chip Technology Ltd dpc 10 doc Page 6 Electrical Options 4 0 ELECTRICAL OPTIONS 4 1 Input Output Connections A 50 way insulation displacement connector IDC is provided on the PC rear panel of the board
9. rosoft BASIC will test the operation of the DPC 10 No connections to the board are necessary to run this program 10 REM DPC 10 TEST PROGRAM DBJDPC BAS 20 REM BY D JOHNSON VERS 1 0 01 05 87 30 REM counter 1 decrements at 400Hz its load register is set at 400 40 REM this 1 second terminal count is counted by counter 2 amp displayed 50 CLS 60 LOCATE 1 10 70 PRINT BLUE CHIP TECHNOLOGY DPC 10 TEST PROGRAM VERS 1 0 80 LOCATE 5 20 PRINT ENTER BASE ADDRESS OF DPC 10 82 INPUT BASE 90 LOCATE 5 20 PRINT COUNT seconds 100 OUT BASE 1 amp H17 Blue Chip Technology Ltd dpc 10 doc Page 11 230 245 250 255 260 OUT BASE 0 OUT BASE amp HCO OUT BASE 1 amp H1 OUT BASE amp H32 OUT BASE amp HF OUT BASE 1 amp H9 OUT BASE amp HO OUT BASE amp H4 OUT BASE 1 amp H2 OUT BASE 28 OUT BASE 0 OUT BASE 1 amp HA OUT BASE 0 OUT BASE 0 OUT BASE 1 amp H63 OUT BASE 1 amp HA2 OUT BASE 1 amp H12 LSB INP BASE MSB INP BASE Operating Guide Count F5 down in BCD Decrement 400 at 400HZz to give1 sec output Counts up the output from counter 1 Counter 2 cleared at start Load and Arm both counters Save current value in counter Read it and convert from BCD MD MSB AND amp HF 10 MSB AND amp HFO 2 4 LD LSB AND amp HF 10 LSB and amp HFO 2 4 LOCATE 5 38 PRINT MD 100 LD GOTO 200 Repeat End with BREAK The above program runs continuously and c
10. table level for the opto isoltors The value of this resistor must be calculated to ensure that the current passing through thr opto isolator is limited to 10mA The opto isolator will drop 1 5V constantly REQUIRED INPUT VOLTAGE 1 5V RESISTANCE 0 01 The following table gives some common examples using preferred resisitor values Input Voltage 330R 820R The resultant isolated signals appear as OPT 1 and OPT 2 on the board OPT 1 Pins 43 44 OPT 2 Pins 45 46 Blue Chip Technology Ltd dpc 10 doc Page 10 Operating Guide 5 0 OPERATING GUIDE 5 1 Software Interface The AMD9513 Counter Timer Pulse generator chip is a very powerful and complex device To assist the user in his or her efforts to design software for the DPC 10 we have included a reasonably comprehensive datasheet for the device itself is included in this manual with a copy of the circuit diagram of the board 5 2 Programming Guide The AMD9513 chip ports may be accessed using either of the following methods INPUT a Microsoft BASICA or GW BASIC X INP P Returns the byte from port P and assigns this value to the variable X b 8088 8086 Assembly language PORT EQU 0300H GETDAT MOV DX PORT IN AL DX RET OUTPUT a Microsoft BASICA or GW BASIC OUT P D Outputs the byte D to port P b 8088 8086 Assembly language PORT EQU 0300H PUTDAT MOV DX PORT MOV AX DATA OUT DX AL RET 5 3 Example Program The following program in Mic
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