PCI-1721 - Messcomp
Contents
1. 28 Appendix C Register Structure and Format 20 Cl C2 C3 C4 OVerVIeW iani oH EO Rp prs api eei 29 Port Address 29 D A Channel 0 1 2 3 Data BASE 0 2 4 6H 33 Board ID BASE 10H eere nennen 33 D A Control 12 J eese eene 34 Write Calibration Result to EEPROM BASE 16H 35 All D A channels Synchronized Setting BASE 22H 36 Synchronization strobe BASE 24H sse 36 Calibration Setting BASE 26H eee 37 C 10 Calibration Status BASE 28H 3 C 11 I O Setting Command and Status BASE 2AH 39 C 12 Clear FIFO strobe 2 2 220 0440021 40 C 13 Clear FIFO strobe BASE 2EH 22 2 2 0440021 40 C 14 82C54 Counter Chip BASE 30 32 34 36H 4l C 15 DIO Write Read eene 4 C 16 DMA FIFO Data Buffer 40 42 4 Appendix D Calibration 43 VREASSIenment hp erret Se teer e nee yt 44 D2 D A Calibration rette eterne 44 13 Calibration Utihty ete oie ER 46 1 Introduction A Thank you for buying the Advantech PCI 1721 The PCI 1721 i2. Unipolar C External Bipolar External Unipolar C External Bipolar 6 Intemal fo x 6 Internal fo DIO Configuration Cancel Low byte About Highbyte JOUT Fig 2 10 Device Setting dialog box Note Users can configure the source of D A reference voltage either as Internal or External and select the output voltage range When selecting voltage source as Internal users have six options for the output voltage ranges and current ranges 0 5 V 0 10 V 5 5 V 10 10 V 0 20 mA and 4 20 mA When selected as External the output voltage range is determined by the external reference voltage in the following way By inputting an external reference voltage xV where Ixl lt 10 you will get a output voltage range 0 to x V Advantech Co Ltd 21 PCI 1721 User s Manual www advantech com Chapter 2 Step 5 After you have finished configuring the device OK and the device name will appear in the Installed Devices box as seen below Advantech 10 Device Installation x m Installed Devices 51 84 My Computer E 000 lt 17211 0 gt Setup Remove Test m List of Devices Advantech PCI 1716 aj Add i Advantech 1720 Advantech PCI 1721 Advantech 1731 Advantech PCI 1750 e P Fig 2 11 The Device Name appearing on
3. 1 D A Range 0 5V calibration 1 D A Range 0 5V calibration 1 D A Calibration Figure D 4 Range Selection in Step 5 Clicking the Start button the utility will test some registers to make sure the PCI 1721 has stable enough to process the calibrate procedure Fig D 5 Figure D 5 Burning test PCI 1721 User s Manual 48 Advantech Co Ltd www advantech com Appendix Step 6 D A channel 0 calibration is enabled Fig D 6 Advantech Auto Calibration Program 1 D A Range 0 5V calibration 1 D A Range 0 5V calibration w 2 D A Range 0 10 calibrati 2 D A Range 0 10V calibratic 3 D A Range 5V calibration 3 D A Range 5V calibration 4 D A Range 10V calibration 4 D A Range 10V calibration Figure D 6 Calibrating D A Channel 0 Step 7 D A channel 1 calibration is enabled Fig D 7 Advantech Auto Calibration Program 1 D A Range 0 5V calibration 1 D A Range 0 5V calibration 2 D A Range 0 10V 2 D A Range 0 10V calibrati 3 D A Range 5V calibration 3 D74 Range 5V calibration 4 D A Range 10V calibration 4 D A Range 10V calibration Figure D 7 Calibrating D A Channel 1 Advantech Co Ltd 49 1721 User s Manual www advantech com Step 8 Auto calibration is finished Fig D 8 Advantech Auto Calibr
4. 1721 12 bit 4 channel Advanced Analog Output Card Copyright This documentation and the software included with this product are copyrighted 2001 by Advantech Co Ltd All rights are reserved Advantech Co Ltd reserves the right to make improvements in the products described in this manual at any time without notice No part of this manual may be reproduced copied translated or transmitted in any form or by any means without the prior written permission of Advantech Co Ltd Information provided in this manual is intended to be accurate and reliable However Advantech Co Ltd assumes no responsibility for its use nor for any infringements of the rights of third parties which may result from its use Acknowledgments PC LabCard is a trademark of Advantech Co Ltd IBM and PC are trade marks of International Business Machines Corporation MS DOS Win dows Microsoft Visual C and Visual BASIC are trademarks of Microsoft Corporation Intel and Pentium are trademarks of Intel Corporation Delphi and C Builder are trademarks of Inprise Corporation CE notification The PCT 1721 developed by ADVANTECH CO LTD has passed the CE test for environmental specifications when shielded cables are used for external wiring We recommend the use of shielded cables This kind of cable is available from Advantech Please contact your local supplier for ordering information Note Concerning the environment protecti
5. DAO D A data DAO the least significant bit LSB of the D A data 11 the most significant bit MSB C 4 Board ID BASE 10H The PCI 1721 offers Board ID register BASE 10H With correct Board ID settings user can easily identify and access each card during hardware configuration and software programming Table C 3 PCI 1721 Board ID data Base Addr 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Board ID 10H R PPPPPPPPDPDPLDPLDIIITI BD3 DBO Board ID BDO LSB of the Board ID BD3 MSB of the Board ID Advantech Co Ltd 32 1721 User s Manual www advantech com Appendix 5 D A Control BASE 12H Table C 4 PCI 1721 Register for D A control D A Control Command Nas SII D A Control Status PEERS bre D A channel output voltage range 0 5V 1 10V UB zn D A channel n unipolar or bipolar output 0 Unipolar 1 Bipolar MOD_n D A channel n output mode 0 Direct output normal 1 Waveform output VREF n D A channel voltage reference source 0 Internal 1 External PCI 1721 User s Manual 34 Advantech Co Ltd www advantech com Appendix 6 Write Calibration Result to EEPROM BASE 16H Table C 5 PCI 1721 Register for write calibration result to EEPROM Write Calibration Result to EEPROM S ea D7 D0 Calibration result data DO the least significant bit LSB of the data D7 the most significant bit M
6. ground references AGND and DGND are connected together on the 1721 card Digital Ground The two ground references AGND and DGND are connected together on the 1721 card Counter 0 Clock Input The clock input of counter 0 can be either external CNTO CLK DGND up to 10 MHZ or internal 1 MHZ as set by software CNTO OUT DGND Counter 0 Output CNTO DGND Counter 0 Gate Control FIFO Output This pin pulses once for each FIFO clock when turned on If D A conversion is in the FIFO trigger mode users can use this signal as FIFO_OUT DGND Output synchronous signal for other applications A low to high edge triggers D A conversion to start D A External Trigger Gate When EXT_GATE is connected to 5 V it EXT_GATE DGND Input will enable the external trigger signal to input When is connected to DGND it will disable the external trigger signal to input D A External Trigger Clock This pin is external trigger clock input for the EXT_CLK ROND D A conversion A low to high edge triggers D A conversion to start 12 VDC Source from PCI bus directly with FUSE protection DGND Output 5 VDC Source from PCI bus directly with FUSE protection CLK_10M FIFO FIFO C1 82C54 82C54 1 Waveform enti cNT2 o Mode G1 G2 45V 1 10M EXT_CLK EXT_GATE FIFO_OUT FIFO_WR WR FIFO Fi
7. keep a safe distance between them Or you should place the signal cable at aright angle to the power line to minimize the undesirable effect The signals transmitted on the cable will be directly affected by the quality of the cable In order to ensure better signal quality we recommend that you use the PCL 10168 shielded cable Advantech Co Ltd 25 1721 User s Manual www advantech com Appendix Appendix A Specifications Analog Output FIFO Size 1K samples Operation mode Single Continuous Waveform Synchronized output Output Range Using Internal 0 5V 0 10V 5 5V 10 10V internal amp Reference 0 20mA 4 20mA External Using External 0 x V x V 10 lt lt 10 Reference Reference x x V x V 10 lt x lt 10 Accuracy Differential 7 Non linearity 1 LSB monotonic 4 Slew Rate 10 V us Driving Capability 10 mA Out Inpede Max Update Rate 10 MHz max for one channel Settling Time Sus to 1 LSB of FSR 10 MHz Max External Clock Input External TTL Trigger Input Digital Input Output Input Channels 16 bi directional Numer of port Input Voltage Output Voltage PCI 1721 User s Manual 26 Advantech Co Ltd www advantech com Appendix Counter Timer TL iON Low 0 8 V max High 2 0 V min Low 0 8 V max Gate Input High 2 0 V min Low 0 5 V max 24 mA Clock Input Count
8. s Manual www advantech com Chapter 2 Step 3 Select the DLL Drivers option Step 4 Select the Windows 95 98 or Windows NT or Windows 2000 option according to your operating system Just follow the installation instructions step by step to complete your DLL driver setup DLL Drivers _ gt Provides complete DA amp C 1 0 function libraries to utilize HW functions gt Programmed with Microsoft Visual C Visual Basic Inprise Delphi and C Builder gt Features lots of programming examples gt 4525 ADAM 5000 CANopen PCL 841 utilities also included Fig 2 5 Different options for Driver Setup For further information on driver related issues an online version of DLL Drivers Manual is available by accessing the following path Start Programs Advantech Driver for 95 and 98 or for NT 2000 Driver Manual 2 5 Hardware Installation Note Make sure you have installed the driver first before you install the card please refer to 2 4 Driver Installation After the DLL driver installation is completed you can now go on to install the PCI 1721 card in any PCI slot on your computer But it is suggested that you should refer to the computer user manual or related documentation if you have any doubt Please follow the steps below to install the card on your system PCI 1721 User s Manual 16 Advantech Co Ltd www advantech com Step 1 Step 2 Step 3 Step 4 Step 5 Ste
9. to make sure the DA amp C card getting stable A calibration utility AutoCali is included on the companion CD ROM AutoCali EXE PCI 1721 calibration utility This calibration utility is designed for the Microsoft Windows environment Access this program from the default location C Program Files Advantech ADSAPIUtility PCH721 Advantech Co Ltd 43 1721 User s Manual www advantech com D 1 Assignment There is one variable resistor VR1 on the PCI 1721 to adjust the accurate reference voltage on the PCI 1721 We have provided a test point See J6 in Figure D 1 for you to check the reference voltage on board Before you start to calibrate A D and D A channels please adjust VR1 until the reference voltage on J6 has reached 10 0000 V Figure D 1 shows the locations of VR1 and J6 PI sJ o olo Normal Keep si Figure D 1 1721 VR assignment D 2 D A Calibration You can select an on board 5V or 10V internal reference voltage or an external voltage as your analog output reference voltage If you use an external reference connect the reference voltage within the 10 range to the reference input of the D A output channel you want to calibrate Then adjust the gain value unipolar offset voltage bipolar offset voltage respecti
10. 9 www advantech com PCI 1721 User s Manual 2 Advantech 10 Device Installation My Computer Advantech 1716 Advantech PCI 1720 tech PCI 1721 Advantech PCI 1731 Advantech PCI 1750 me 4279 Fig 2 8 The I O Device Installation dialog box Step 3 Scroll down the List of Devices box to find the device that you wish to install then click the Add button to evoke the Device s found dialog box such as one shown in Fig 2 9 The Device s found dialog box lists all the installed devices on your system Select the device you want to configure from the list box and press the OK button After you have clicked OK you will see a Device Setting dialog box such as the one in Fig 2 10 Advantech PCI 1721 devices found PCI 1721 Slot 0 1 0 6600H IRQ Fig 2 9 The Device s Found dialog box PCI 1721 User s Manual 20 Advantech Co Ltd www advantech com Chapter 2 Configuring the Device Step 4 On the Device Setting dialog box Fig 2 10 you can config ure the voltage source either as External or Internal and specify the voltage output range for the 4 D A channels Base Address 6600 Hex Interrupt Channel A D A Voltage Ref Channel 0 _ D A Voltage Ref Channel 2 C External Unipolar C External Bipolar External Unipolar C External Bipolar Internal DE 6 Internal 0 5 gt D A Voltage Ref Channel 1 _ r D A Voltage Ref Channel 3 C
11. LK will trigger an A D conversion on the PCI 1721 When DGND is connected to TRG_GATE the external trigger function is thereby disabled PCI 1721 User s Manual 24 Advantech Co Ltd www advantech com Chapter 3 3 4 Field Wiring Considerations When you use the PCI 1721 to acquire data from outside noises in the environment might significantly affect the accuracy of your measure ments if due cautions are not taken The following measures will be helpful to reduce possible interference running signal wires between signal sources and the PCI 1721 The signal cables must be kept away from strong electromagnetic sources such as power lines large electric motors circuit breakers or welding machines since they may cause strong electromagnetic interference Keep the analog signal cables away from any video monitor since it can significantly affect a data acquisition system Ifthe cable travels through an area with significant electromagnetic interference you should adopt individually shielded twisted pair wires as the analog input cable This type of cable has its signal wires twisted together and shielded with a metal mesh The metal mesh should only be connected to one point at the signal source ground Avoid running the signal cables through any conduit that might have power lines in it If you have to place your signal cable parallel to a power line that has a high voltage or high current running through it try to
12. SB P Gain result or Offset result 0 Gain 1 Offset SEL1 SELO Select D A channel 00 Channel 0 01 Channel 1 10 Channel 2 11 Channel 3 R D A channel output voltage range 0 5V 1 10V UB D A channel unipolar or bipolar output 0 Unipolar 1 Bipolar Advantech Co Ltd 25 1721 User s Manual www advantech com Appendix C 7 All D A channels Synchronized Setting BASE 22H The PCI 1721 provides the innovation function which all D A channels can output the data synchronization Table C 6 PCI 1721 Register for all D A channels synchronized setting ew A All D A channels Synchronized Setting Command s 22 All D A channels Synchronized Setting Status CEEE EEEE EEEE SYNC All D A channels synchronized setting 0 Disable 1 Enable C 8 Synchronization strobe BASE 24H Write any values to BASE 24H all D A channels will output data synchronization Table C 7 PCI 1721 Register for synchronization strobe mm STDP Sr SSS Er D Synchronized Strobe eee Sis spissa l 1721 User s Manual 26 Advantech Co Ltd www advantech com Appendix 9 Calibration Setting BASE 26H Table C 8 PCI 1721 Register for calibration command and status ew A S Calibration Setting Command ES EY 26 Calibration Setting Status PRP gt gt T gt e D7 D0 Calibration result data DO the least signi
13. Software Overview Advantech offers a rich set of DLL drivers third party driver support and application software to help fully exploit the functions of your PCI 1721 card DLL driver on the companion CD ROM LabVIEW driver Advantech ActiveDAQ Advantech GeniDAQ Note amp The waveform output function of Analog Output is not included Programming choices for DA amp C cards You may use Advantech application software such as Advantech DLL driver On the other hand advanced users are allowed another option for register level programming although not recommended due to its laborious and time consuming nature DLL Driver The Advantech DLL Drivers software is included on the companion CD ROM at no extra charge It also comes with all the Advantech DA amp C cards Advantech s DLL driver features a complete I O function library to help boost your application performance The Advantech DLL driver for Windows 95 98 NT 2000 works seamlessly with development tools such as Visual C Visual Basic Inprise C Builder and Inprise Delphi Register level Programming Register level programming is reserved for experienced programmers who find it necessary to write codes directly at the level of device registers Since register level programming requires much effort and time we recommend that you use the Advantech DLL drivers instead However if register level programming is indispensable you should refer to the rel
14. ation Program 2 D A Range 0 10V calibrati 2 D A Range 0 10V calibratic Vi 3 D A Range 5V calibration 3 D A Range 5V calibration 4 D A Range 10V calibration 4 D A Range 10V calibration 2 2 1 D A Range 5V calibration Figure D 8 D A Calibration is finished D A channel Manual Calibration Step 1 Click the Manual D A Calibration tab to show the D A channel manual calibration panel Four D A channels are individually calibrated Before calibrating output desired voltage from the D A channels and measure it through an external precision multi meter Step 2 For example choose channel 0 select the Range and select the wished output voltage code or value from the radio buttons Fig D 9 and Fig D 10 Advantech Auto Calibration Program uu i XV 5v 10v EE X V 7 Gain i0vy i El Uripo Dis yj Figure D 9 Selecting D A Range PCI 1721 User s Manual 50 Advantech Co Ltd www advantech com Advantech Auto Calibration Program ol x Auto D A Calibration Manual D A Calibration About D A Calibration Instructions 1 Select the range of the D A channels and set up its output voltage 2 Connect the D A channels to precision multi meter 3 Adjust the gain and offset register to calibrate the D Z chann
15. clock from pin 38 of CN1 0 Gate control of 82C54 counter 0 0 Disable 82C54 counter 0 1 Enable 82C54 counter 0 LDIO Setting the LOW byte DIO as input or output 0 Output 1 Input HDIO Setting the HIGH byte DIO as input or output 0 Output 1 Input FIFO C1 C0 Select FIFO clock source 00 Clock from 82C54 The limitation is 2 5 MHz 01 5 MHz 10 10 MHz 11 Clock from external The limitation is 10 MHz Note amp The default configuration of the digital output channels is a logic 0 This avoids damaging external devices during system start up or reset since the power on status is set to the default value You can refer to Fig 2 3 FIFO block diagram to get more clear description Advantech Co Ltd 39 1721 User s Manual www advantech com Appendix C 12 Clear FIFO strobe BASE 2CH Write any values to BASE 2CH to clear the FIFO Table C 11 1721 Register for clear FIFO strobe Base Addr 15 14 13 12 11 10 9 8 6 4 3 2 1 0 Clear FIFO strobe 2CH W C 13 Clear FIFO strobe BASE 2EH Table C 12 PCI 1721 Register for clear FIFO strobe Base Addr 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 FIFO Status 2EH R PPE I T FIFO Empty flag This bit indicates whether the FIFO is empty 0 means that the FIFO is empty FIFO flag This bit indicates whether the FIFO is half full 0 means that the FIFO is half full EF FIFO Fu
16. elivered with an easy to use 32 bit DLL driver for user programming under the Windows 95 98 NT 2000 operating system We advise users to program the PCI 1721sing the 32 bit DLL driver provided by Advantech to avoid the complexity of low level programming by register The most important consideration in programming the PCI 1721 the register level is to understand the function of the card s registers The information in the following sections is provided only for users who would like to do their own low level programming C 2 I O Port Address Map The PCI 1721 requires 32 consecutive addresses in the PC s I O space The address of each register is specified as an offset from the card s base address For example BASE 0 is the card s base address and BASE 7 is the base address plus seven bytes The table C 1 shows the function of each register of the PCI 1721 or driver and its address relative to the card s base address Advantech Co Ltd 29 1721 User s Manual www advantech com Appendix Table C 1 1721 register format Part 1 Base PCI 1721 Register Format Address D A Channel 0 Data w ETE Te Te Teese Tes oe Tee Oo D A Channel 1 Data Es ge pepe pe I s osos D A Channel 2 Data Ec qe esee poe pos sepes posses se Board ID PPP 13111 D A Control Command D A Channel 3 Data ESE OC Ee Write Calibration Result to EEPROM EE ee PCI 1721 User s Man
17. els Be sure to setting the Range as lt 0 7 5 V for Current Output Channel 0 Channel 1 Range Output Voltage Range Output Voltage Range 0 gt 5V A Code Range 02 5V A Code 0 ph F vae 0 007324 Y Value 0 000000 Ente Adjust Adjust 0 5 n Gamy i E Gan 0 gt Gain 0 4 gt Offset 0 gt Offset 0 A Unipolar Offset n Unipolar Offset PJ wj Figure D 10 Choosing Output Voltage Step 3 According to the difference between the output voltage from D A channel and the value in the multi meter adjust the gain and offset registers Fig D 11 X Advantech Auto Calibration Program n x Auto D A Calibration Manual D A Calibration About D A Calibration Instructions 1 Select the range of the D A channels and set up its output voltage 2 Connect the D A channels to a precision multi meter 3 Adjust the gain and offset register to calibrate the D A channels w Be sure to setting the Range as lt 0 5 V for Current Output Channel 0 Channel 1 Range Output Voltage Range Output Voltage Range 0 gt 5V F al Code Range 0 gt 5 A Code p E F vaw 0 007324 Y Value 0 000000 Adjust Gangovyy 8 Gain 1UV n Gain 84 gt Gan 0
18. en the data will transfer to the FIFO Table C 15 PCI 1721 Register for DMA FIFO data buffer Ee o p e e sS sr E To 0 11515111 DMA FIFO Data Buffer upper word 4H W T gt 5 T8 5 T PCI 1721 User s Manual 42 Advantech Co Ltd www advantech com Appendix D Appendix D Calibration This chapter provides brief information on PCI 1721 calibration Regular calibration checks are important to maintain accuracy in data acquisition and control applications We provide the calibration programs or utility on the companion CD ROM to assist you in D A calibration Note amp f you installed the program to another directory you can find these programs in the corresponding subfolders in your destination directory 1721 has been calibrated at the factory for initial use How ever a calibration of the analog input and the analog output function every six months is recommended These calibration programs make calibration an easy Job With a variety of prompts and graphic displays these programs will lead you through the calibration and setup procedures showing you all the correct settings and adjustments To perform a satisfactory calibration you will need a 41 digit digital multi meter and a voltage calibrator or a stable noise free D C voltage source Note amp Before you calibrate the D A function you must turn on the power at least 15 minutes
19. er Output 2 4 V min 15 mA General Connector Type 68 pin SCSI II female 5 V 850 mA 12 V 600 mA V GO 1A 12 V 700 mA 0 60 C 32 140 F refer to IEC 68 2 1 2 Typical Power Consumption Max Operation Temperature Storage 20 85 4 185 F Relative Humidity 5 95 RH non condensing refer to IEC 68 2 3 Certification CE certified Advantech Co Ltd 27 1721 User s Manual www advantech com Chapter 1 Appendix PLX9054 PCI Interface PCI Bus TOC PCI 1721 User s Manual 40M Hz OSC Block Diagram Local Bus Appendix Auto Calibration Circuit 28 Bidirectional And Latched 8 DIOI7 0 gt j Bits DIO Bidirectional And Latched 8 DIO 15 8 gt r Bits DIO 10M Hz K CNTO CLK e e gt CLK Source M CNTO_GATE CNTO OUT BFO 82054 FIFO_CLK 1K FIFO GATE e M EXT CLK e IOUTO 12Bit j paco VOUTO ag BP P 1 IOUTI 12Bit 1 DACI VOUTI REF V1 e 1OUT2 us ae REF_V2 IOUT3 E Y T pa s REFV3 Advantech Co Ltd www advantech com Appendix C Appendix C Register Structure Format C 1 Overview The PCI 1721 is d
20. erform its designated function To troubleshoot the DLL driver error you can pass the error code to DRV_GetErrorMessage function to return the error message Or you can refer to the DLL Driver Error Codes Appendix in the DLL Drivers Manaul for a detailed listing of the Error Code Error ID and the Error Message PCI 1721 User s Manual 8 Advantech Co Ltd www advantech com 1 6 Accessories Chapter 1 Advantech offers complete set of accessory products to support the PCI 1721 card These accessories include Wiring Cable PCL 10168 The PCL 10168 shielded cable is specially designed Wiring Boards for PCI 1721 cards to provide high resistance to noise To achieve a better signal quality the signal wires are twisted in such a way as to form a twisted pair cable reducing cross talk and noise from other signal sources Furthermore its analog and digital lines are separately sheathed and shielded to neutral ize EMI EMC problems ADAM 3968 The ADAM 3968 is a 68 pin SCSI wiring terminal Advantech Co Ltd www advantech com module for DIN rail mounting This terminal module can be readily connected to the Advantech PC Lab cards and allow easy yet reliable access to individual pin connections for the 1721 card 9 PCI 1721 User s Manual Chapter 2 2 Chapter 2 Installation This chapter gives users a package item checklist proper instructions about unpacking and step by step procedures f
21. evant information in Appendix C Register Structure and Format orto the example codes included on the companion CD ROM PCI 1721 User s Manual 6 Advantech Co Ltd www advantech com Chapter 1 1 5 DLL Driver Programming Roadmap This section will provide you a roadmap to demonstrate how to build an application from scratch using Advantech DLL driver with your favorite development tools such as Visual Visual Basic Delphi and C Builder The step by step instructions on how to build your own applications using each development tool will be given in the DLL Drivers Manual Moreover a rich set of example source codes are also given for your reference Programming Tools Programmers can develop application programs with their favorite development tools Visual C Visual Basic Delphi C Builder For instructions on how to begin programming works in each develop ment tool Advantech offers a Tutorial Chapter in the DLL Drivers Manual for your reference Please refer to the corresponding sections in this chapter on the DLL Drivers Manual to begin your programming efforts You can also take a look at the example source codes provided for each programming tool since they can get you very well oriented The DLL Drivers Manual can be found on the companion CD ROM Or if you have already installed the DLL Drivers on your system The DLL Drivers Manual can be readily accessed through the Start button Start Pro
22. ficant bit LSB of the data D7 the most significant bit MSB P Gain result or Offset result 0 1 Offset SELI SELO Select D A channel 00 Channel 0 01 Channel 1 10 Channel 2 11 Channel 3 R D A channeloutput voltage range 0 5V 1 10V UB D A channel unipolar or bipolar output 0 Unipolar 1 Bipolar Advantech Co Ltd 37 1721 User s Manual www advantech com Appendix 10 Calibration Status BASE 28H Table C 9 PCI 1721 Register for calibration status Calibration Status 28H CALI_ CALL CALI ee CALI RDY Calibration activate bit This bit indicates whether the calibration command is finish 0 means that the calibration command is finish CALI INIT Calibration initial bit This bit indicates whether the calibration controller is initialed 0 means that the calibration controller is initial CALI REQ Calibration request bit This bit indicates whether the calibrate command send to the calibration controller is completed 0 means that the command is sent completed PCI 1721 User s Manual 38 Advantech Co Ltd www advantech com Appendix 11 I O Setting Command and Status BASE 2AH Table C 10 PCI 1721 Register for I O setting ew Stee sS Sr sS Ero TO Setting Command w FIFO_ FIFO_ 8254_ T O Setting Status FIFO_ FIFO _ 8254 Pa 8254 CNTO Select clock source of 82C54 counter 0 0 10 clock 1 82 54 counter 0
23. g 2 3 FIFO block diagram of PCI 1721 PCI 1721 User s Manual 14 Advantech Co Ltd www advantech com Chapter 2 2 4 Driver Installation We recommend you to install the driver before you install the PCI 1721 card into your system since this will guarantee a smooth installation process The 32 bit DLL driver Setup program for the PCI 1721 card is included on the companion CD ROM that is shipped with your DA amp C card package Please follow the steps below to install the driver software Step 1 Insert the companion CD ROM into your CD ROM drive Step 2 The Setup program will be launched automatically if you have the autoplay function enabled on your system When the Setup Program is launched you ll see the following Setup Screen Note amp If the autoplay function is not enabled on your computer use Windows Explorer or Windows Run command to execute SETUP EXE on the companion CD ROM Includes DOS Drivers gt Windows 3 1 Drivers Windows 95 98 Drivers gt Windows NT Drivers Windows 2000 Drivers Note Please read files for detailed information C Program Files Advantech ADSAPI default location 1 EXAMPLE txt Example Supporting Table The same as readme txt file on Examples folder on v1 4b or earlier 2 README htm What s new in CD ROM 3 MANUAL pdf DLL Drivers User s Manual Fig 2 4 The Setup Screen of Advantech Automation Software Advantech Co Ltd 15 1721 User
24. generator 1 3 Installation Guide Before you install your PCI 1721 card please make sure you have the following necessary components PCI 1721 DA amp C card PCI 1721 User s Manual Driver software Advantech DLL drivers included in the companion CD ROM Wiring cable PCL 10168 optional Wiring board ADAM 3968 optional Computer Personal computer or workstation with a PCI bus slot running Windows 95 98 NT 2000 Some other optional components are also available for enhanced operation Application software ActiveDAQ GeniDAQ or other third party software packages the waveform output function of Analog Output is not included After you get the necessary components and maybe some of the accessories for enhanced operation of your Multifunction card you can then begin the Installation procedures Figure 1 1 on the next page provides a concise flow chart to give users a broad picture of the software and hardware installation procedures PCI 1721 User s Manual 24 Advantech Co Ltd www advantech com Chapter 1 Install Driver from CD ROM then power off PC Install Hardware and power on PC Use driver utility to configure hardware Use test utility to test hardware Read examples amp driver manual Start to write your own application Fig 1 1 Installation Flow Chart Advantech Co Ltd 5 1721 User s Manual www advantech com Chapter 1 1 4
25. grams Advantech Driver for 95 and 98 or for NT 2000 Driver Manual The example source codes could be found under the corresponding installation folder such as the default installation path Program Files Advantech ADSAPIExamples For information about using other function groups or other develop ment tools please refer to the Creating Windows 95 NT 2000 Appli cation with DLL Driver chapter and the Function Overview chapter on the DLL Drivers Manual Advantech Co Ltd PCI 1721 User s Manual www advantech com Chapter 1 Programming with DLL Driver Function Library Advanech DLL driver offers a rich function library to be utilized in various application programs This function library consists of numerous APIs that support many development tools such as Visual C Visual Basic Delphi and C Builder According to their specific functions or services those APIs can be categorized into several function groups Analog Output Function Group Digital Input Output Function Group Counter Function Group Port Function Group direct I O Event Function Group For the usage and parameters of each function please refer to the Function Overview chapter in the DLL Drivers Manual Troubleshooting DLL Driver Error Driver functions will return a status code when they are called to perform a certain task for the application When a function returns code that is not zero it means the function has failed to p
26. ical contact with materials that could hold static electricity such as plastic vinyl and Styrofoam A Whenever you handle the card grasp it only by its edges DO NOT TOUCH the exposed metal pins of the connector or the electronic components Note amp Keep the anti static bag for future use You might need the original bag to store the card if you have to remove the card from PC or transport it elsewhere Advantech Co Ltd _ 11 PCI 1721 User s Manual www advantech com Chapter 2 2 2 Switch and Jumper Settings The PCI 1721 card has one function switch and five jumper settings an i PCI 1721 8 0 k IP s 0 20 24 ds VREF 10V ds i 2 254 TEk LI PENA 2 4 Normal Keep E Fig 2 1 Card connector jumper switch locations Table 2 1 Summary of jumper settings Names of Jumpers Function description Keep last status after hot reset JP1 Default configuration JP6 JP9 4 20 mA 0 20 mA Setting the time to reset the analog outputs Some users will want the capability of clearing each analog output when the system or PC issues a reset signal on the PCI bus Some users will want to clear their analog output only as part of system power on The PCI 1721 satisfies both these needs by providing jumper Depending on the application this capability may al
27. ice Manager 1 Access the Device Manager through Control Panel System Device Manager 2 The device name of the PCI 1721 should be listed on the Device Manager tab on the System Property Page Advantech Co Ltd 17 PCI 1721 User s Manual www advantech com 2 System Properties 2 x General Device Manager Hardware Profiles Performance View devices by type View devices by connection 58 Computer 5 88 AdvantechDAQ Advantech PCI 17 28 CDROM Disk drives Display adapters 5 Floppy disk controllers amp Hard disk controllers E Keyboard m Monitors gt Mouse 88 Network adapters 27 Potts COM amp LPT m System devices Universal Serial Bus controllers Properties Refresh Remove Print a 0 0 0 A GG 1 9 1 Fig 2 6 The device name listed the Device Manager Note If your card is properly installed you should see the device name of your card listed on the Device Manager tab If you do see your device name listed on it but marked with an exclamation sign it means your card has not been correctly installed In this case remove the card device from the Device Manager by selecting its device name and press the Remove button Then go through the driver installation process again After your card is properly installed on your system you can now configure your device using the Device Insta
28. is 10 V For example connecting with an external reference of 7 V will generate 0 7 V D A output Figure 3 1 shows how to make analog output and external reference input connections on the PCI 1721 Internal External 45 v REF_INT REF_Vn FIFO 5 Data Bus Vout_n External Reference MUX DIAN For D A Signal n ocal Bus Load p AGND n 0 3 Figure 3 1 Analog output connections Advantech Co Ltd 22 1721 User s Manual www advantech com Chapter 3 3 3 Trigger Source Connections Internal Pacer Trigger Connection The PCI 1721 includes one 82C54 compatible programmable Timer Counter chip which provides three 16 bit counters connected to a 10 MHz clock each designated specifically as Counter 0 Counter 1 and Counter 2 Counter 0 is a counter which counts events from an input channel or outputing pulse Counter 1 and Counter 2 are cascaded to create a 32 bit timer for pacer triggering A low to high edge from the Counter 2 output PACER_OUT will trigger an A D conversion on the PCI 1721 At the same time you can also use this signal as a synchronous signal for other applications External Trigger Source Connection In addition to pacer triggering the PCI 1721 also allows external triggering for A D conversions When a 5 V source is connected to EXT_GATE the external trigger function is enabled A low to high edge coming from EXT_C
29. ll flag This bit indicates whether the FIFO is full 0 means that the FIFO is full PCI 1721 User s Manual 40 Advantech Co Ltd www advantech com Appendix 14 82 54 Counter Chip BASE 30 32 34 36H Table C 13 PCI 1721 Register for82C54 counter chip me PPP PPP EE PEL 82C54 Counter 0 Command 30H PE EEEEP CPP EEE ED Te 32H 82C54 Counter 1 Command TIT Te IP EEE ETE 82C54 Counter 1 Status s e Ie 588 5 TESTS 82C54 Counter 2 Command w 82 54 Counter 2 Status TITI LPP EEE EP 82C54 Control Command w TS TS TE TS T9 TESTS T 36H 82C54 Control Status CPEDEPBIPPLPLBIITIBEBIIS w 82C54 Counter 0 Status TTITO To e PEEP EP The four registers of BASE 30 32 34 36H are used for the 82C54 programmable timer counter For detailed information Intel 82C54 User s Manual is available by accessing the following path on CD ROM WMocumentMntel 82C54 manual pdf Advantech Co Ltd 41 PCI 1721 User s Manual www advantech com Appendix C 15 DIO Write Read BASE 3EH Table C 14 PCI 1721 Register for DIO write read strobe ew Write DO data w eT Te eee Te Te T Read DI data Te Te Tee e T5 T2 T7 C 16 DMA FIFO Data Buffer BASE 40 42H The PCI 1721 provides the 32 bit FIFO Write the data pattern which you want to output to BASE 40 42H th
30. llation Program that has itself already been installed on your system during driver setup A complete device installation procedure should include device setup configuration and testing The following sections will guide you through the Setup Configuration and Testing of your device PCI 1721 User s Manual 18 Advantech Co Ltd www advantech com Chapter 2 2 6 Device Setup amp Configuration The Device Installation program is a utility that allows you to set up configure and test your device and later stores your settings on the system registry These settings will be used when you call the APIs of Advantech 32 bit DLL drivers Setting Up the Device Step 1 To install the I O device for your card you must first run the Device Installation program by accessing Start Programs Advantech Driver for 95 and 98 or for NT 2000 Device Installation File D View Help Install Advantech IO Device 2 Fig 2 7 Advantech Device Installation utility program Step 2 On the Device Installation program window select the Setup menu item on the menu bar and click the Device command Fig 2 7 to bring up the Device Installation dialog box Fig 2 8 You can then view the device s already installed on your system if any on the Installed Devices list box Since you haven t installed any device yet you might see a blank list such as the one on the next page Fig 2 7 Advantech Co Ltd 1
31. low analog outputs to be ZERO without requiring a complete shutdown of processes controlled by the card Complete loss of power to the chip clears the chip memory Thus no matter how JP1 is set if the power to the PCI 1721 is disconnected the analog output initial power on state will be ZERO PCI 1721 User s Manual 12 Advantech Co Ltd www advantech com 2 3 Connector Pin Assignment Chapter 2 Figure 2 2 shows the pin assignments for the 68 pin I O connector on the PCI 1721 REF 5V VOUTO AGND IOUTO REF VO AGND VOUT2 AGND IOUT2 REF V2 AGND NC AGND NC NC AGND NC AGND NC NC AGND DIOO DIO2 DIO4 DIO6 DIO8 DIO10 DIO12 DIO14 DGND CNT0_CLK CNT0_OUT CNT0_GATE 12V p 68 34 67 33 66 32 65 31 64 30 63 29 62 28 61 27 60 26 59 25 58 24 57 23 56 22 55 21 54 20 53 19 52 18 51 17 50 16 49 15 48 14 47 13 46 12 45 11 44 10 43 9 42 8 41 7 40 6 39 5 38 4 37 3 36 2 35 1 10 VOUTI AGND IOUTI REF VI AGND VOUT3 AGND IOUT3 REF V3 AGND NC AGND NC NC AGND NC AGND NC NC AGND DIOI DIO3 DIOS DIO7 DIO9 DIOII DIO13 DIO15 DGND FIFO_OUT EXT_GATE EXT_CLK 5V Fig 2 2 I O connector pin assignments for the 1721 Advantech Co Ltd www advantech com 243 PCI 1721 User s Manual Chapter 2 Connector Signal Description Table 2 2 I O Connector Signal Description Analog Ground The two
32. lt gt Offset 87 BE gt 0 lt Unipolar Offset gt Unipojar ore A Aunarmiation Figure D 11 Adjusting registers Advantech Co Ltd 51 1721 User s Manual www advantech com Appendix Step 4 Adjust registers until they fall between the output voltage from the D A channel and the value in the multi meter Note amp The Waveform Editor Utility also comes with PCI 1721 Access this program from the default location C Program Files Advantech ADSAPIUtility PCI 1721 WaveformEditor Kindly refer to the readme file for detailed information PCI 1721 User s Manual 52 Advantech Co Ltd www advantech com
33. nd gap free analog output By setting aside a block of memory in the PC the PCI 1721 performs bus mastering data transfers without CPU intervention setting the CPU free to perform other more urgent tasks such as data analysis and graphic manipulation The function allows users to run all I O functions simultaneously at full speed without losing data Auto calibration Function The PCI 1721 provides an auto calibration function by using a calibration utility The built in calibration circuitry of the PCI 1721 corrects gain and offset errors in analog output channels thereby eliminating the need for external equipment and user adjustments Waveform Analog Output The PCI 1721 provides four analog output channels Both of them can perform continuous waveform output The analog output can be up to 10MS s for each analog output channel Or you can load a cyclic waveform into an on board FIFO which will continuously output the cyclic waveform The on board FIFO of the PCI 1721 can store 2 to 1024 samples of the waveform Keeping the Output Settings and Values after system reset Users can independently set the four outputs to different ranges 0 5V 0 10V 5V 10 0 20mA or 4 20mA and all the ranges software selectable When the system is hot reset power not shut down the PCI 1721 can either retain the last analog output settings and values or return to its default configuration depending on jumper setting This practical func
34. on we d like to reduce the paper using for the user s manual Starting the page of Appendix C please find the PDF file of the CD ROM Part No 2003172101 2nd Edition Printed in Taiwan October 2001 Contents T Introd ctio0R l 7 0 3 eo eoo ce e eroe 11 12 13 14 15 1 6 tees asec ee Gee ae 1 Applications ote acs a 4 Installation 4 Software OverviIew n sss 6 DLL Driver Programming Roadmap 7 ACCESSORIES i rh anas dette E asha E Pee RYE 9 2 Installation uu SEEN Tc 2 1 22 23 24 2 5 26 Un packinp ce aaa Saad es eG eet 10 Switch and Jumper 20 12 I O Connector yu l etre UE 13 Duverlnst llation rete ne tette eerte 15 Hardware Installation eese 16 Device Setup amp Configuration seen 19 3 Signal Connections 23 3 1 3 2 33 34 Ante E E EERE 23 Analog Output Connections 0 23 Trigger Source Connections 24 Field Wiring Considerations eee 25 Appendix A Specifications 26 Appendix B Block Diagram
35. or both driver and card installation 2 1 Unpacking After receiving your PCI 1721 package please inspect its contents first The package should contain the following items M PCI 1721 card Companion CD ROM DLL driver included M User s Manual The 1721 card harbors certain electronic components vulnerable to electrostatic discharge ESD ESD could easily damage the integrated circuits and certain components if preventive measures are not carefully paid attention to Before removing the card from the antistatic plastic bag you should take following precautions to ward off possible ESD damage Touch the metal part of your computer chassis with your hand to discharge static electricity accumulated on your body Or one can also use a grounding strap Touch the anti static bag to a metal part of your computer chassis before opening the bag Take hold of the card only by the metal bracket when removing it out of the bag After taking out the card first you should Inspect the card for any possible signs of external damage loose or damaged components etc If the card is visibly damaged please notify our service department or our local sales representative immediately Avoid installing a damaged card into your system PCI 1721 User s Manual 10 Advantech Co Ltd www advantech com Chapter 2 Also extra caution to the following aspects to ensure proper installation Avoid phys
36. p 6 Step 7 Step 8 Step 9 Chapter 2 Turn off your computer and unplug the power cord and cables TURN OFF your computer before installing or remov ing any components on the computer Remove the cover of your computer Remove the slot cover on the back panel of your computer Touch the metal part on the surface of your computer to neutralize the static electricity that might be on your body Insert the 1721 card into a PCI slot Hold the card only by its edges and carefully align it with the slot Insert the card firmly into place Use of excessive force must be avoided otherwise the card might be damaged Fasten the bracket of the PCI card on the back panel rail of the computer with screws Connect appropriate accessories 68 pin cable wiring termi nals etc if necessary to the PCI card Replace the cover of your computer chassis Re connect the cables you removed in step 2 Plug in the power cord and turn on the computer Note amp In case you installed the card without installing the DLL driver first Windows 95 98 will recognize your card as an unknown device after rebooting and will prompt you to provide the necessary driver You should ignore the prompting messages just click the Cancel button and set up the driver according to the steps described in 2 4 Driver Installation After the PCI 1721 card is installed you can verify whether it is properly installed on your system in the Dev
37. ration The program helps the user to easily finish the calibration procedures automatically however the user can calibrate the PCI 1721 manually The following steps will guide you through the 1721 software calibration Step 1 Access the calibration utility program AutoCali exe from the default location C Program Files Advantech ADSAPIUitility AutoCalibration Note amp f you installed the program to another directory you can find this program in the corresponding subfolders in your destination directory PCI 1721 User s Manual 46 Advantech Co Ltd www advantech com Step 2 Select PCI 1721 in the ADSDAQ dialog box E ADSDAQ 000 PCI 1721 1 0 6600 Figure D 2 Selecting the device you want to calibrate Step 3 After you start to calibrate the PCI 1721 please don t forget to adjust X AutoCali Message Figure D 3 Warning message before start calibration Advantech Co Ltd 47 PCI 1721 User s Manual www advantech com D A channel Auto Calibration Step 4 There are four D A channels in PCI 1721 select the output range for each channel and then press the Start button to calibrate D A channels Fig D 4 X Advantech Auto Calibration Program 2 D A Range 0 10V calibrati 2 D A Range 0 10V calibratic 3 D A Range 5V calibration 3 D A Range 5V calibration 4 D A Range 10V calibration 4 D A Range 10V calibration
38. s an advanced high speed analog output card for PCI bus and each of analog output channels is equipped with a 12 bit double buffered DAC It features many powerful and unique functions like waveform output function with 10 MHz maximum update rate auto calibration function and Board ID The PCI 1721 is an ideal solution for industrial applications where high speed continuous analog output or even real time waveform output functions are required The following sections of this chapter will provide further information about features of the multifunction cards a quick start for installation together with some brief information on software and accessories for the PCI 1721 card 1 1 Features 10 MHz maximum digital update rate PCI bus mastering for data transfer Auto calibration function U 4 analog output channels with 1K FIFO A 12 bit DAC is equipped for each of analog output channels Real time waveform output function with internal external pacer Synchronized output function Flexible output types and output range settings Keeping the output settings and values after system reset 16 ch DIO and one 10MHz 16 bit resolution counter Board ID The Advantech PCI 1721 offers the following main features Advantech Co Ltd 1 1721 User s Manual www advantech com Chapter 1 Mastering Data Transfer The PCI 1721 supports PCI Bus mastering DMA for high speed data transfer a
39. the list of devices box Note As we have noted the device name 000 1721 I O 6600H begins with a device number 000 which is specifically assigned to each card The device number is passed to the driver to specify which device you wish to control After your card is properly installed and configured you can click the Test button to test your hardware by using the testing utility we supplied For more detailed information please refer to Chapter 2 of the DLL Drivers Manual You can also find the rich examples on the CD ROM to speeding up your programming PCI 1721 User s Manual 22 Advantech Co Ltd www advantech com 3 Signal Connections 3 1 Overview Maintaining signal connections is one of the most important factors in ensuring that your application system is sending and receiving data correctly A good signal connection can avoid unnecessary and costly damage to your PC and other hardware devices This chapter provides useful information about how to connect input and output signals to the PCI 1721 via the I O connector 3 2 Analog Output Connections The PCI 1721 provides four D A output channels Vout 0 Vout_3 and Jout 0 Iout_3 Users may use the PCI 1721 internally provided precision 5V 10V reference to generate 0 to 5 V 10 V D A output range Users also may create D A output range through external references REF V0 REF V3 The external reference input range
40. tion eliminates danger caused by mis operation during unexpected system reset On board FIFO Memory The PCI 1721 provides an on board FIFO First In First Out memory buffer storing up to 1K samples for D A conversion PCI 1721 User s Manual aD Advantech Co Ltd www advantech com Chapter 1 Board ID The PCI 1721 has a built in DIP Switch that helps define each card s ID when multiple PCI 1721 cards have been installed on the same PC chassis The board ID setting function is very useful when users build their system with multiple PCI 1721 cards With correct Board ID settings you can easily identify and access each card during hardware configuration and software programming On Board Programmable Timer Counter 1721 provides a programmable timer counter for generating pacer trigger for the D A conversion The timer counter chip is 82 54 which includes three 16 bit counters of 10 MHz clock One counter is used as an event counter for counting events coming from the input channel The other two are cascaded together to make a 32 bit timer for pacer trigger time base Note For detailed specifications of the PCI 1721 please refer to Appendix A Specifications Advantech Co Ltd 3 1721 User s Manual www advantech com Chapter 1 1 2 Applications Process control Programmable voltage source Programmable current sink Servo control Multiple loop PID control Simulate function
41. ual 30 Advantech Co Ltd www advantech com Appendix Table C 1 1721 register format Part 2 PCI 1721 Register Format EXEGEXESESEJENENESEZESESEZESESES All D A channels Synchronized Setting Command Synchronization Strobe Calibration Setting Command Es ERES e Calibration Setting Status Calibration Status Advantech Co Ltd 31 PCI 1721 User s Manual www advantech com Appendix Table C 1 1721 register format Part 3 PCI 1721 Register Format Pa a Bee 82C54 Counter 0 Command 82C54 Counter 0 Status 82C54 Counter 1 Command 82 54 Counter 1 Status 82C54 Counter 2 Command 82 54 Counter 2 Status 82C54 Control Command 8254 Control Status DIO Write Strobe DIO Read Strobe DMA FIFO Data Buffer lower word 1721 User s Manual 22 Advantech Co Ltd www advantech com Appendix D A Channel 0 1 2 3 Data BASE 0 2 4 6H Table C 2 PCI 1721 Register for D A channel 0 data CE CN 21015 D A Channel 0 Data w PT TT Pee Te Te oe Tos Te D A Channel 1 Data 2H w Be in D A Channel 2 Data E Es e ERRE D A Channel 3 Data
42. ut range as 10 V for channel 0 6 Adjust BIPOLAR offset calibration First output 0x0800 to channel 0 Then writing the value from 0x00 to OxFF sequentially to Calibration Command and Data register BASE 26H and to see whether the output voltage is less then 1 LSB If so to go to next step Otherwise you must change the value and repeat all the procedure in this step again until the output voltage is less then 1 LSB 7 Adjust GAIN 10V calibration First output OXOFFF to channel 0 Then writing the value from 0x00 to OxFF sequentially to Calibra tion Command and Data register BASE 26H and to see whether the output voltage is less then 1 LSB If so to go to next step Otherwise you must change the value and repeat all the procedure in this step again until the output voltage is less then 1 LSB 8 To change to another channel and repeat steps 2 to 7 to calibrate all four channels Advantech Co Ltd 45 1721 User s Manual www advantech com Table D 1 D A binary code table 07 2047 1 LSB 0 5 FS 1 LSB 0800h 2048 0 5 FS OFFFh 4095 FS 1 LSB FS 1 LSB Note amp 1 LSB 5 4095 for Unipolar For example 1LSB 10 4095 while the range is 0 V to10 V 1 LSB FS 4095 for Bipolar For example ILSB 10 4095 while the range is 5 V to 5 V D 3 Calibration Utility The calibration utility AutoCali provides four functions auto D A calibration and manual D A calib
43. vely of D A channels 0 and 1 with the Calibra tion Command Data register 5 26 Note Using a precision voltmeter to calibrate the D A outputs is recommended PCI 1721 User s Manual 44 Advantech Co Ltd www advantech com Appendix auto calibration program AutoCali EXE helps you finish the D A calibration procedure automatically Although the procedure is not necessary the following calibration steps are provided below for your reference in case you want to implement the calibration yourself 1 To adjust those four jumpers JP6 JP9 to 0 20 mA 2 Setting the output range as 0 5 V for channel 0 3 Adjust UNIPOLAR offset calibration First output Ox0000 to channel 0 Then writing the value from 0x00 to OxFF sequentially to Calibration Command and Data register BASE 26H and to see whether the output voltage is less then 1 LSB If so to go to next step Otherwise you must change the value and repeat all the procedure in this step again until the output voltage is less then 1 LSB 4 Adjust GAIN 5V calibration First output OXOFFF to channel 0 Then writing the value from 0x00 to OxFF sequentially to Calibra tion Command and Data register BASE 26H and to see whether the output voltage is less then 1 LSB If so to go to next step Otherwise you must change the value and repeat all the procedure in this step again until the output voltage is less then 1 LSB 5 Setting the outp
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