Measurement Computing CIO-DAC02 User Manual
Contents
1. A rtisan Artisan Technology Group is your source for quality TecmoogyGroup new and certified used pre owned equipment FAST SHIPPING AND SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT DELIVERY Experienced engineers and technicians on staff Sell your excess underutilized and idle used equipment TENS OF THOUSANDS OF at our full service in house repair center We also offer credit for buy backs and trade ins IN STOCK ITEMS www artisantg com WeBuyEquipment EQUIPMENT DEMOS HUNDREDS OF InstraV ea REMOTE INSPECTION LOOKING FOR MORE INFORMATION MANUFACTURERS Remotely inspect equipment before purchasing with Visit us on the web at www artisantg com 7 for more our interactive website at www instraview com 7 information on price quotations drivers technical LEASING MONTHLY specifications manuals and documentation RENTALS ITAR CERTIFIED yop aed Contact us 888 88 SOURCE sales artisantg com www artisantg com CIO DACO2 Dual Channel 12 Bit Analog Output User s Manual A li IMEASUREMENT COMPUTING Revision 4 October 2000 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com MEGA FIFO the CIO prefix to data acquisition board model numbers the PCM prefix to data acquisition board model numbers PCM DAS08 PCM D24C3 PCM DAC02 PCM COM422 PCM COM485 PCM DMM PCM DAS16D 12 PCM DAS16S 12 PCM DAS16D 16 PCM DAS16S 16 PCI DAS6402 16 Universal Librar2. to control devices in a 4 20 mA control loop The 4 20 mA current loop circuit is a precision current sink employing a VMOS FET A diode provides reverse hookup protection Figure 2 2 Select the on board 5V reference for 4 20mA use UNIPOLAR OUT AROMA OLT qeu 6 B LLGND e 4 20mA CURRENT LOOP OUTPUT Figure 2 2 Circuit Diagram Simplified 4 20 mA Output A minimum of 8 VDC and a maximum of 36 VDC external excitation voltage is used to power the loop A typical application would use a 24V loop supply The loop may use either a grounded load the supply floats or a grounded supply the load floats See Figure 2 3 below FLOATING SUPPLY FLOATING LOAD B o GROUNDED 4 20mA SUPPLY LLGND 2 4 20mA OUTPUTS The 4 20 mA may be hooked up with either a floating supply or a floating load Both methods are shown here E GROUNDED LOAD LLGND Figure 2 3 Loop Grounding Methods Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 3 REGISTER PROGRAMMING 3 1 INTRODUCTION AND EXAMPLE The CIO DACO2 can be programmed by direct register writes The board has four registers grouped in sets of two Each set corresponds to one D A output chip Writing to the registers causes an output of the D A according to the transfer function explained earlier An explanation of direct regi
3. 8 bit D A by storing a 0 in the LSB From that point on write 8 bit bytes to the MSB for immediate 8 bit updates 32 D A CODING The coding of the D A is true binary for the unipolar and 4 20 mA outputs The bipolar scheme requires more complex coding The transfer functions for both are as follows A unipolar output is equal to D A OUT VREF 4096 D A VALUE 1 A bipolar output is equal to D A OUT VREF 2048 D A VALUE 2048 Table 3 1 D A Equivalent Outputs D A VALUE UNIPOLAR OUTPUT BIPOLAR OUTPUT 0 0 0V 45V 2048 2 5V 0 0V 4095 5 0V 5 0V NOTE This table applies for VREF 5V Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Power Consumption 5V supply 12V supply 12V supply Analog Output D A converter type Resolution Number of channels Voltage Ranges Bipolar output Voltage Ranges Unipolar output Current Ranges Current output Offset error Gain error Differential nonlinearity Integral nonlinearity Relative accuracy Monotonicity Gain drift internal referece Offset drift Slew Rate Current Drive voltage outputs Voltage Compliance current out Output resistance OP 07 Output short circuit duration Miscellaneous Environmental Operating temerature range Storage temerature range Humidity 4 SPECIFICATIONS 135 mA typ 300mA max 15 mA typ 25mA max 25 mA typ 35mA max A
4. D7548 12 bits 2 Voltage or Current Output 5V 10V and user range determined by value of external reference between 10V and 10V jumper selectable 0 to 5V 0 to 10V and user range deter mined by value of external reference between 10V and 10V jumper selectable 4 to 20mA using on board or external 5V reference Adjustable to zero Adjustable to zero 0 5LSB max 0 5LSB max 0 5LSB 0 01 max Guaranteed to 12 bits over temperature 25 ppm C max 3 ppm C max 0 3 V uS Typical 5 mA min 8 to 36V 0 1 ohm max 40 mA min Continuous Double buffered output latches Reference input resistance 7 kOhm min 0 to 70 C 55 to 125 C 0 to 90 non condensing Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com For your notes 10 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com EC Declaration of Conformity We Measurement Computing Corp declare under sole responsibility that the product CIO DACO2 Analog Output Board Part Number Description to which this declaration relates meets the essential requirements is in conformity with and CE marking has been applied according to the relevant EC Directives listed below using the relevant section of the following EC standards and other normative documents EU EMC Directive 89 336 EEC Essential requirements relating to electromagnetic compatibilit
5. F INPUT LEOND 11 24 D AO UNIPOLAR As an alternative to a cable you may 5VPC 13 29 D A04 20mA attach field wiring to the 25 pin connec o tor with a DMCON 25 connector kit available from Measurement Computing CIO DACO2 CONNECTOR View from the rear of the PC Figure 2 1 CIO DACO2 Signal Connector Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 2 2 ANALOG OUTPUTS Each D A converter has three analog outputs a unipolar voltage a bipolar voltage and a 4 20 mA current output The range of the output is determined by the reference voltage selected on that D A s VREF input The CIO DACO2 provides two on board jumper selectable reference voltages 5V and 10V Choosing a VREF input of 5V provides a range of 0 to 5 volts on the unipolar out put and 5V on the bipolar output The 4 20 mA output is also available at this setting Choosing a VREF input of 10V provides a unipolar output of 0 to 10 volts and a 10V bipolar output Choosing an external voltage reference will provide A unipolar output equal to VREF 4096 D A VALUE 1 A bipolar output equal to VREF 2048 D A VALUE 2048 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 2 3 4 20 mA OUTPUTS In addition to voltage outputs each D A can supply a 4 20mA output with a resolution of 0 0039 mA per bit The 4 20 mA outputs may be used
6. InstraV ea REMOTE INSPECTION LOOKING FOR MORE INFORMATION MANUFACTURERS Remotely inspect equipment before purchasing with Visit us on the web at www artisantg com 7 for more our interactive website at www instraview com 7 information on price quotations drivers technical LEASING MONTHLY specifications manuals and documentation RENTALS ITAR CERTIFIED yop aed Contact us 888 88 SOURCE sales artisantg com www artisantg com
7. and run nstaCal the installation calibration and test utility included with your board nstaCal will guide you through switch and jumper settings for your board Detailed information regard ing these settings can be found below Refer manual for nstaCal installation instructions 1 2 HARDWARE to the Extended Software Installation The CIO DACO2 Figure 1 1 has one bank of switches and two jumper blocks which must be set before installing the board in your computer D A1 bipolar gain D A1 unipolar offset D A1 4 20 gain unipolar gain amp bipolar offset D AO bipolar gain D A 0 unipolar offset D AO 4 20 gain unipolar gain amp bipolar offset VREF adjust 4 20 1 offset 4 20 0 offset VREF Jumper Block 6 95 Volt Reference Circuit m TER 5 0 T 5 0 T A A Beis Le f D A 0 D A 1 OM LEE UniO BipO Uni Bipi e f D A 1 Base Address Switch eae Ji dia I n i Out buffer UP i1 DN ELE I H 98765432 Wait State e PC XT AT Bus Connector Wait State Jumper Figure 1 1 Board Layout CIO DACO2 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 1 3 BASE ADDRESS Unless there is already a board in your system that uses addre
8. plied OUTPUT RANGE SELECT JUMPER BLOCK The on board voltage reference The jumpers are in the 5V REF position jumper supplies the same signals available at the 25 pin connector directly to the D A VREF input without the bother of looping the 5VREF or 10VREF outputs back into the D A VREF inputs as is required with the MetraByte DAC 02 Figure 1 4 Output Range Select Jumper Block Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 1 6 INSTALLING BOARD IN THE COMPUTER 1 Turn the power off 2 Remove the cover of your computer Be careful not to dislodge any of the cables installed on the boards in your computer as you slide the cover off 3 Locate an empty ISA expansion slot in your computer 4 Push the board firmly down into the connector If it is not seated fully it may fail to work and could short circuit the PC bus power onto a PC bus signal This could damage the motherboard or the board 2 SIGNAL CONNECTION 2 4 CONNECTOR DIAGRAM CIO DAC02 The CIO DACO 2 signal connector is a 25 pin D type connector accessible from the rear of the PC through the expansion backplate GND 1 The connector accepts male 25 pin D TANE S is VREE OUT y type connectors The C25FM cable rene 1 D A1 BIPOLAR may be used along with a CIO MINI25 LLGND 6 1S Aden n screw terminal board for connecting LLGND en LO REF QHT your field wiring ONE 48 22 D A VRE
9. ry Measurement Computing Corp products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people HM CIO DACO2 Iwp Revision 4 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com TABLE OF CONTENTS INSTALLATION jicex4RR RO R4 REA dd PARRA ER PER 1 TESOL WARE 2 i4 e028 enio ea SE HEP eee E ESE 1 1 2 HARDWARE i ke RR E REESE RE RE TRESG 1 L3 BASE ADDRESS cuieieuebesbesdceeseee e i piss tenes 2 1 4 WAIT STATE JUMPER bes ee ods dueceneed ee eee noe ENS 3 1 5 VOLTAGE REFERENCE JUMPERS ei 3 1 6 INSTALLING BOARD IN THE COMPUTER 4 SIGNAL CONNECTION eee eee 4 2 1 CONNECTOR DIAGRAM CIO DACO2 4 22 ANALOG OUTPUTS secera tinse se sega EDO REESE 5 2 3 4 20 MA OUTPUIS siss kedkenreked iei tokia sen ini 6 DIRECT REGISTER PROGRAMMING 7 3 1 INTRODUCTION AND EXAMPLE eee 7 3 2 D A CODING 1saqeeaend tinno masat daa nd re a 8 SPECIFICATIONS ooon 9 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com This page intentionally left blank Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 1 1 SOFTWARE 1 INSTALLATION Before you open your computer and install the board install
10. ss 9 8 7 6 5 4 3 2 Sw HEX 300 hex 768 decimal leave A9 200 the switches as they were set at fe Ta the factory In the example 6 40 shown in Figure 1 2 the board A5 20 is set for base address 300 hex He 768 decimal A2 04 Table 1 1 lists PC WO BASE ADDRESS SWITCH Address 300H shown here addresses Figure 1 2 Base Address Switches Table 1 1 I O Addresses HEX FUNCTION HEX FUNCTION RANGE RANGE 000 00F 8237 DMA 1 2C0 2CF EGA 020 021 8259 PIC 1 2D0 2DF EGA 040 043 8253 TIMER 2E0 2E7 GPIB AT 060 063 8255 PPI XT 2E8 2EF SERIAL PORT 060 064 8742 CONTROLLER AT 2F8 2FF SERIAL PORT 070 071 CMOS RAM amp NMI 300 30F PROTOTYPE CARD MASK 080 08F DMA PAGE REGISTERS 310 31F PROTOTYPE CARD 0A0 0A1 8259 PIC 2 320 32F HARD DISK XT 0A0 0AF NMI MASK XT 378 37F PARALLEL PRINTER 0CO ODF 8237 2 AT 380 38F SDLC OFO OFF 80287 NUMERIC CO P 3A0 3AF SDLC AT 1F0 1FF HARD DISK AT 3B0 3BB MDA 200 20F GAME CONTROL 3BC 3BF PARALLEL PRINTER 210 21F EXPANSION UNIT XT 3C0 3CF EGA 238 23B BUS MOUSE 3D0 3DF CGA 23C 23F ALT BUS MOUSE 3E8 3EF SERIAL PORT 270 27F PARALLEL PRINTER 3F0 3F7 FLOPPY DISK 2B0 2BF EGA 3F8 3FF SERIAL PORT 2 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com 1 4 WAIT STATE JUMPER The wai
11. ster programming of the CIO DACO2 follows We suggest that using the Measurement Computings Universal Library is a more effi cient means of programming the registers A short example follows 10 Voltage 2 25 Desired output voltage is 2 25 V 20 DACOUNTS Int 2 25 0 00244 Converts volts to D A digital value 30 MSB Int DACOUNTS 460 16 Extract the most significant byte MSB 40 LSB DACOUNTS MSB 16 Extract the LSB 50 LSB LSB 16 Shift the LSB four places left 60 OUT amp H300 LSB Write LSB to D AO LSB register 70 OUT amp H301 MSB Write MSB to D AO MSB and update output This BASIC example can be translated to any other language capable of PORT I O The registers of the CIO DACO2 are BASE 0 D AO LSB BASE 1 D AO MSB amp UPDATE BASE 2 D A1 LSB BASE 3 D A1 MSB amp UPDATE The format of the data registers is LSB REGISTER 7 6 5 4 3 2 1 0 D A9 D AIO D Al D AI2 X X X x LSB MSB REGISTER 7 6 5 4 3 2 1 0 D AI D A2 D A3 D A4 D AS D A6 D A7 D A8 MSB Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com The LSB register of each D A is buffered and writing to it does not update the D A output Writing to the MSB updates the D A output with the full 12 bits from the LSB buffer and the MSB data The CIO DACO2 may be used as an
12. t state generator is only active O E z when the CIO DAC02 is being accessed N E In general the PC is not slowed down by using the wait state Normally a wait WAIT STATE JUMPER No wait state is state is not required selected here Place jumper on the two leftmost pins for a wait state Figure 1 3 Wait State Jumper 1 5 VOLTAGE REFERENCE JUMPERS The output voltage of the D A converters is determined by the value of the reference voltage VREF and the digital code written to the DACs see Analog Output section below The VREF signal must be supplied to each D A or no voltage output will be present at the D A s output pin The VREF is supplied via jumpers or from an exter nal source A jumper block consisting of two rows of six pins is located on the upper right corner of the board There are two groups of pins one for D A 0 and one for D A 1 Each group of pins provide a means of supplying either 5V or 10V to each D A NOTE The board is shipped with both the D A 0 and D A 1 VREF jumpers in the external X position With jumpers in the X position the required D A reference volt age s must be supplied to the 25 pin connector VREF input pins D A 0 D A 1 A 5VREF provides a 5V output on 5 10 X 5 10 X the D A bipolar output 0 5V output on the unipolar output and a 4 20 mA N N HE E output on the current output If other ranges are desired an exter H H N Nn nal voltage between 10 and 10 volts should be sup
13. y EU 55022 Class B Limits and methods of measurements of radio interference characteristics of information technology equipment EN 50082 1 EC generic immunity requirements IEC 801 2 Electrostatic discharge requirements for industrial process measurement and control equipment IEC 801 3 Radiated electromagnetic field requirements for industrial process measurements and control equipment IEC 801 4 Electrically fast transients for industrial process measurement and control equipment Carl Haapaoja Director of Quality Assurance Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com Measurement Computing Corporation 16 Commerce Boulevard Middleboro Massachusetts 02346 508 946 5100 Fax 508 946 9500 E mail info measurementcomputing com www measurementcomputing com Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com A rtisan Artisan Technology Group is your source for quality TecmoogyGroup new and certified used pre owned equipment FAST SHIPPING AND SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT DELIVERY Experienced engineers and technicians on staff Sell your excess underutilized and idle used equipment TENS OF THOUSANDS OF at our full service in house repair center We also offer credit for buy backs and trade ins IN STOCK ITEMS www artisantg com WeBuyEquipment EQUIPMENT DEMOS HUNDREDS OF
14. y InstaCal Harsh Environment Warranty and Measurement Computing Corporation are registered trademarks of Measurement Computing Corporation IBM PC and PC AT are trademarks of International Business Machines Corp Windows is a trademark of Microsoft Corp All other trademarks are the property of their respective owners Information furnished by Measurement Computing Corp is believed to be accurate and reliable However no responsibility is assumed by Measurement Computing Corporation neither for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corporation All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without the written approval of the President of Measurement Computing Corporation Life support devices systems are devices or systems which a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in inju
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