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SCXI-1104/C User Manual

1. OUTREF NC NC SERDATIN DAQD A SLOTOSEL NC DGND NC SERCLK NC NC RSVD NC NC NC AJN ol a 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 AOGND MCH0 NC NC NC NC NC NC NC NC NC DGND SERDATOUT NC NC NC NC SCANCLK NC NC NC NC RSVD NC NC Figure 3 2 SCXI 1104 C Module Rear Signal Connector Pin Assignments www ni com Chapter 3 Signal Connections Rear Signal Connector Descriptions The rear signal connector on the cabled module is the interface between the DAQ device and all modules in the SCXI chassis Pin Signal Name Direction Description 1 2 AOGND Output Negative Module Analog Output With software you can configure these pins to connect to the analog reference 3 Output Positive Module Analog Output This pin connects to the positive side of the differential analog input channel 0 of the DAQ device 4 Output Negative Module Analog Output In the reset state of the module this pin is configured to connect to the analog reference 19 OUTREF
2. 1 max Digital output specifications referenced to DGND output logic high voltage 3 7 V min at 4 mA max Vor output logic low voltage 0 4 V max at 4 mA max A 2 WWW ni com Appendix A Specifications Filters Cutoff frequency 3 dB SCXI 1104 inet 2Hz SCXI 1104C 10 kHz NMR 060 HZ trt een m 40 dB SCXI 1104 Step response either gain Accuracy SCXI 1104 SCXI 1104C To 0 1 ls 200 us To 0 01 10s 1 ms Stability Recommended warm up time 20 min Offset temperature coefficient 50 uV C Gain temperature coefficient 20 ppm C 3 Note The offset and gain temperature coefficients apply outside the range of gt 35 C and lt 15 C Physical Dimensions erento 11 5 by 27 3 cm 4 54 by 10 75 in connectors eeeeeeee 50 pin male ribbon cable rear connector 96 pin male DIN C front connector Environment Operating 0 to 50 C Storage temperature 55 to 150 C Relative humidity eee 5 to 90 noncondensing National Instruments Corporation A 3 SCXI 1104 C User Manual Appendix A Specifications Power Requirements S V Supplya i te treten 15 mA max 15 V supply regulated from 24 V supply 150 mA max SCXI 1104 C User M
3. A EN EN ro N A A AR EN EN k a A c Figure 3 1 SCXI 1104 C Module Front Signal Connector Pin Assignments www ni com Chapter 3 Signal Connections Front Signal Connector Signal Descriptions Pin Signal Name Description Al 5 V 5 VDC Source A2 A5 A16 A24 CGND Chassis Ground Tied to the SCXI chassis A32 A4 RSVD Reserved B1 B32 CH31 through CH0 Negative Input Channels Negative side of differential input channels 1 32 CH31 through CH0 Positive Input Channels Positive side of differential input channels All other pins are not connected Analog Input Signal Connections The signal terminals for the positive input channels are found in Figure 3 1 column C The signal terminal for each corresponding negative input channel is found in Figure 3 1 column B Each input pair goes to a separate filter and amplifier that is multiplexed to the module output buffer as shown in Figure 5 1 The differential input signal range of an SCXI 1104 C module input channel is 30 VAC ns 42 VAC a and 60 VDC This differential input range is the maximum measurable voltage difference between the positive and negative channel inputs The common mode input signal range of an SCXI 1104 C module input cha
4. e rep eee eph Ek E eti X Chapter 1 Introduction About the SCXI 1104 C Module eren nennen rennen 1 1 What You Need to Get Started eter eet t tet e edipi teni 1 2 RERO RR UH iE 1 3 Custom Cable Components ee eee 1 3 Chapter 2 Installation and Configuration Installmng the Software eode trice te RU vete e orsa iere E te be buried 2 1 Installing the SCXI 1104 C 2 2 Installing the SCXI 1104 C Module into the SCXI Chassis 2 2 Connecting the SCXI 1104 C to a DAQ Device for Multiplexed Scanning in an SCXI Chassis essere 2 3 Connecting the SCXI 1104 C to a DAQ Device for Multiplexed Scanning in a PXI Combination Chassis eese 2 5 Configuration and Self Test ccc cee eeeeeeecsecssesseeecesceeceseeeeecaecsassaecneseeseeeseeseneenees 2 6 Auto Detec ng Modules 2 7 Manually Adding Modules sess 2 8 Configuring the SCXI 1104 C 2 9 Self Test 2 10 Troubleshooting Self Test Verification sese 2 10 Removing the SCXI 1104 C esses 2 11 Removing the SCXI 1104 C from an SCXI Chassis eese 2 11 Removing the SCXI 1104 C from Measurement amp Automation Explorer 2
5. Installation and Configuration This chapter describes how to install and configure the SCXI 1104 C module The SCXI 1104 C is a jumperless module and requires no user modifications There is no need for the user to remove the module cover Note The SCXI 1104 C does not support ribbon cabled multichassis SCXI systems You must use the SCXI 1346 multichassis adapter in a multichassis system Installing the Software You can control the SCXI 1104 C in an application development environment ADE using the NI DAQ data acquisition device driver software The supported ADEs include LabVIEW BridgeVIEW LabWindows CVI Visual Basic ComponentWorks C and environments You can also use the SCXI 1104 C in conjunction with VirtualBench and Measure The following instructions describe the order for installing the software for your SCXI 1104 C 1 Install your ADE if you have not already done so National Instruments ADEs have release notes containing software installation instructions 2 Install the appropriate version of NI DAQ software NI DAQ version 6 5 1 or higher is required to configure and program your SCXI 1104 module NI DAQ version 6 7 or higher is required to configure and program your SCXI 1104C module If you do not have the correct NI DAQ version you can either contact a National Instruments sales representative or download the latest NI DAQ version from the National Instruments Web site www ni com See Appendix B
6. 6 1 Cahbration ee enero ree eee gebe Era eu eaa 6 1 Calibration Equipment Requirement seen 6 1 Gain and Offset Calibration esses eene eterne eene 6 2 SCXI 1104 C User Manual vi www ni com Contents Appendix A Specifications Appendix B Common Questions Appendix C Technical Support Resources Glossary Index Figures Figure 2 1 Installing the SCXI 1104 C Module eee 2 3 Figure 2 2 Connecting an SCXI Chassis to a 2 5 Figure 2 3 Removing the SCXI 1104 C sese 2 13 Figure 3 1 SCXI 1104 C Module Front Signal Connector Pin Assignments 3 2 Figure 3 2 SCXI 1104 C Module Rear Signal Connector Pin Assignments 3 4 Figure 5 1 SCXI 1104 C Module Block Diagram eee 5 1 Tables Table 3 1 SCXIbus to SCXI 1104 C Module Rear Signal Connector to Device Pin Equivalencies eene 3 6 Table B 1 Digital Signals on the SCXI 1104 C sees B 3 National Instruments Corporation Vii SCXI 1104 C User Manual About This Manual Conventions This manual describes the installation operation and use of the SCXI 1104 family of modules The SCXI 1104 family consists of the following modules e SCXI 1104 e SCXI 1104C The SCXI 1104 C modules are members of the National Ins
7. 1 2 www ni com Unpacking Chapter 1 Introduction Your SCXI 1104 C module is shipped in an antistatic package to prevent electrostatic damage to the module Electrostatic discharge can damage several components in the module To avoid damaging the module take the following precautions e Ground yourself using a grounding strap or by holding a grounded object e Touch the antistatic package to a metal part of your SCXI chassis before removing the module from the package e Remove the module from the package and inspect the module for loose components or any other sign of damage Notify National Instruments if the module appears damaged in any way Do not install a damaged module into your SCXI chassis e Never touch the exposed pins of connectors Custom Cable Components To develop custom cables consult the following table Inc 96 pin DIN C male connector Signal SCXI 1104 C Mating Connector Connector Connector Cable Rear AMP Inc 50 pin Electronic Products Electronic Products male ribbon cable Division 3M or T amp B Ansley Division 3M or header Corp 50 position polarized T amp B Ansley Corp ribbon socket female 50 conductor 28 AWG connector stranded ribbon cable Front Harting Electronik AMP Inc right angle pins Not applicable or Panduit Corp straight solder pins 96 pin polarized DIN C female connector National Instruments Corporation SCXI 1104 C User Manual
8. 13 National Instruments Corporation V SCXI 1104 C User Manual Contents Chapter 3 Signal Connections Front Signal Connector onc teet rede etse ieget e there eit 3 2 Front Signal Connector Signal Descriptions sse 3 3 Analog Input Signal Connections esee 3 3 Rear Signal Connector senii be ett met d ihe Fee dtr 3 4 Rear Signal Connector Descriptions eeeeeeeeeeereeeen 3 5 Analog Output Signal Connections eee 3 6 Digital I O Signal Connections sss 3 6 Chapter 4 Programming Channel Addressing eee mee eee eet ed d i edes 4 2 LabVIEW and the SCXI Channel String eene 4 2 LabVIEW the Virtual Channel String eee 4 3 Multiplexed Scanning essent ener nennen 4 4 C and Low Level Functions 4 4 Chapter 5 Theory of Operation Functional Oveni e Wensun nn Rete ee RT Re ere PE RP Ee E E edet ER HRS 5 1 Functional Unit Description otc eerie liter RU CREE e o EORR 5 2 Rear Signal Connector SCXIbus Connector and SCXIbus Interface 5 2 Digit l Control Carcuitty eei ed epe eee 5 2 Analog Circuitry and Front Signal Connector eee 5 3 Analog Input Channels Ree it ese ved 5 3 Analog Bus Switches eese 5 3 Chapter 6 Calibration E us LOU Lad Dek
9. NI Web Support To provide you with immediate answers and solutions 24 hours a day 365 days a year National Instruments maintains extensive online technical support resources They are available to you at no cost are updated daily and can be found in the Technical Support section of our Web site at www ni com support Online Problem Solving and Diagnostic Resources e KnowledgeBase A searchable database containing thousands of frequently asked questions FAQs and their corresponding answers or solutions including special sections devoted to our newest products The database is updated daily in response to new customer experiences and feedback e Troubleshooting Wizards Step by step guides lead you through common problems and answer questions about our entire product line Wizards include screen shots that illustrate the steps being described and provide detailed information ranging from simple getting started instructions to advanced topics e Product Manuals A comprehensive searchable library of the latest editions of National Instruments hardware and software product manuals e Hardware Reference Database A searchable database containing brief hardware descriptions mechanical drawings and helpful images of jumper settings and connector pinouts e Application Notes A library with more than 100 short papers addressing specific topics such as creating and calling DLLs developing your own instrument driver software
10. Output Negative Module Analog Output With software you can configure this pin to connect to the analog reference 24 33 DGND Digital Ground These pins supply the reference for DAQ device digital signals and are tied to the module digital ground 25 SERDATIN Input Serial Data In The DAQ device uses this signal to program modules in all slots 26 SERDATOUT Output Serial Data Out A cabled module uses this signal to return data from any module to the DAQ device 21 DAQD A Input DAQ Device Data Address Line The DAQ device asserts this signal to indicate to the module whether the incoming serial stream is data or address information 29 SLOTOSEL Input Slot 0 Select The device asserts this signal low to indicate that the SERDATIN line information is going to the Slot 0 controller instead of a module 36 SCANCLK Input Scan Clock A rising edge indicates to the scanned SCXI module that the DAQ device has taken a sample and causes the module to advance channels 37 SERCLK Input Serial Clock This signal clocks the data on the SERDATIN and SERDATOUT lines 43 46 RSVD Input Reserved other pins are not connected means that the signal is asserted low National Instruments Corporation 3 5 SCXI 1104 C User Manual Chapter 3 Signal Connections Analog Output Signal Connections Pins 1 through 4 and pin 19 of the rear signal connector are analog output signal pins With software you can configure pin 1 2 4
11. and porting applications between platforms and operating systems National Instruments Corporation C 1 SCXI 1104 C User Manual Appendix C Technical Support Resources Software Related Resources Instrument Driver Network A library with hundreds of instrument drivers for control of standalone instruments via GPIB VXI or serial interfaces You also can submit a request for a particular instrument driver if it does not already appear in the library e Example Programs Database A database with numerous non shipping example programs for National Instruments programming environments You can use them to complement the example programs that are already included with National Instruments products e Software Library A library with updates and patches to application software links to the latest versions of driver software for National Instruments hardware products and utility routines Worldwide Support SCXI 1104 C User Manual National Instruments has offices located around the globe Many branch offices maintain a Web site to provide information on local services You can access these Web sites from www ni com worldwide If you have trouble connecting to our Web site please contact your local National Instruments office or the source from which you purchased your National Instruments product s to obtain support For telephone support in the United States dial 512 795 8248 For telephone support outside the United S
12. calibration ss 300 uV max Before calibration mV typ Gain error relative to calibration reference After calibration sss 0 0296 of reading max Before calibration 0 1 of reading typ National Instruments Corporation A 1 SCXI 1104 C User Manual Appendix A Specifications Digital Signals SCXI 1104 C User Manual Amplifier Characteristics Input impedance Normal powered on 1 MQ Powered off oeeie 900 Overload es 900 Input bias 0 5 nA Input offset current 1 0 nA CMRR 50 to 60 Hz etes 70 dB per 70 dB Output range El V Output 910 Dynamic Characteristics Bandwidth SCXLEA11 04 eee 2Hz 1104 10 kHz Minimum sample interval 0 012 3 us 0 0061 10 us System noise referenced to input 500 Absolute max voltage input 5 5 V with respect to DGND Digital input specifications referenced to DGND Viy input logic high voltage 2 V min input logic low voltage 0 8 V max I input current leakage
13. devices and interfaces by clicking the next to the Devices and Interfaces icon 3 Locate the SCXI chassis in the list Display the list of modules in the chassis by clicking the next to the Chassis icon 4 Right click on the SCXI 1104 C module you want to configure and select Properties Click on the General tab a If the module you are configuring is connected to a National Instruments DAQ device select that device by using the Connected to control If you want this DAQ device to control the chassis confirm that there is a check in the checkbox labeled This device will control the chassis If the module you are configuring is not connected to a National Instruments DAQ device select none b Selectthe multiplexed scanning mode for your SCXI 1104 C by using the Operating Mode control 5 Click on the Channel tab Review the gain and filter settings for all channels on the SCXI 1104 C 6 Click on the Accessory tab Select the accessory you are using with this module When all of your configurations are completed click OK Your SCXI chassis and SCXI module s should now be configured properly Test the system in the section that follows to ensure your SCXI system is communicating properly with the DAQ device National Instruments Corporation 2 9 SCXI 1104 C User Manual Chapter 2 Installation and Configuration Self Test Verification To test the successful configuration of your system follow the steps that follow a
14. rear signal connector to DAQ device pin equivalencies table 3 6 specifications A 2 unavailable signals with DAQ device connected table B 3 documentation conventions used in manual ix x related documentation x xi dynamic characteristics A 2 E EEPROM Register 5 3 environment specifications A 3 F filter specifications A 3 front signal connector 3 2 to 3 4 analog input signal connections 3 3 to 3 4 exceeding input damage level caution 3 3 functional description 5 3 pin assignments figure 3 2 signal descriptions table 3 3 indirect scanning 5 3 installation 2 2 to 2 8 connecting SCXI 1104 C to DAQ device for multiplexed scanning in PXI combination chassis 2 5 to 2 6 in SCXI chassis 2 3 to 2 5 removing SCXI 1104 C 2 11 to 2 14 from Measurement amp Automation Explorer 2 13 to 2 14 from SCXI chassis 2 11 to 2 13 into SCXI chassis 2 2 to 2 3 SCXI 1104 C User Manual I 2 software installation 2 1 unpacking SCXI 1104 C 1 3 L LabVIEW SCXI channel string 4 2 to 4 3 virtual channel string 4 3 to 4 4 low level DAQ functions in multiplexed scanning 4 4 to 4 5 manual See documentation MCHO signal table 3 5 signal table 3 5 Measurement amp Automation Explorer auto detecting modules 2 7 configuration procedure 2 6 to 2 7 configuration reconfiguration 2 9 manually adding modules 2 8 removing SCXI 1104 C 2 13 to 2 14 self test verification 2 10 trouble
15. string Note You cannot mix virtual channels with the SCXI channel strings shown in LabVIEW and the SCXI Channel String To create a virtual channel for the SCXI 1104 C insert a new analog input channel in the Data Neighborhood path in Measurement amp Automation Explorer name it and follow the prompts to create a customized analog input channel For more information about virtual channels consult the Measurement amp Automation online help file National Instruments Corporation 4 3 SCXI 1104 C User Manual Chapter 4 Programming To use a virtual channel enter its name into the channel string input of an analog input example or sub VI If using multiple virtual channels separate them with commas or enter them in different elements in a channel string array You can enter virtual channels in any order Multiplexed Scanning To perform a multiplexed scan in your application perform the following steps 1 Open an analog input example in your ADE 2 Enterthe appropriate SCXI channel string or virtual channel string into the channels parameter 3 Either enter the input limits for signals connected to your module to adjust the gain settings in your system or use the default gain settings from the configuration utility and then run the application When using virtual channels the default input limits configured in the virtual channel configurator are used 4 You have completed a multiplexed scan using your SCXI
16. that plugs into or is connected to your computer Use these manuals for hardware installation and configuration instructions specification information about your DAQ hardware and application hints e Software manuals Examples of software manuals you may have are the LabVIEW and LabWindows CVI manual sets and the NI DAQ manuals After you set up your hardware system use either the application software LabVIEW or LabWindows manuals or the NI DAQ manuals to help you write your application If you have a large and complicated system review the software manuals before you configure your hardware X www ni com National Instruments Corporation About This Manual Accessory installation guides or manuals Consult these guides when you are installing terminal blocks cable assemblies or other SCXI accessories SCXI chassis manual Read this manual to obtain chassis installation instructions and maintenance information Xi SCXI 1104 C User Manual Introduction This chapter describes the SCXI 1104 C modules lists what you need to get started and explains how to unpack the module A table at the end of this chapter lists vendors who manufacture mating connectors for developing custom cables About the SCXI 1104 C Module The SCXI 1104 C modules are for signal conditioning medium voltage signals The SCXI 1104 C has 32 differential analog input channels Each channel also has a divide by 10 attenuator stage before the amp
17. 1104 C This is not a comprehensive discussion of SCXI scanning using LabVIEW BridgeVIEW Measure or ComponentWorks but should give you enough information to help you get started with the examples that are shipped with these software packages C and Low Level DAQ Functions SCXI 1104 C User Manual When using a C based environment several steps are needed to configure the SCXI 1104 C for multiplexed scanning The following procedure outlines the steps for programming with the low level DAQ function calls 1 Prepare your SCXI 1104 C settings by either loading the original SCXI configuration settings using 5 Load Config 2 Specify the module scan list the start channel of each module and the number of channels to scan on each module This is done with the function 5 SCAN Setup This function accepts an array of start channels and an array of the number of channels to scan in each module Therefore it is not possible to repeat channels or use nonsequential channels using this function 3 Next use SCXI MuxCtr Setup to program the device with the correct number of channels multiplexed per scan This number must match the total number of channels programmed in step two 4 4 www ni com Chapter 4 Programming You are now ready to acquire the channel data with the DAQ device If you are using a multifunction DAQ device you can use SCAN OP to perform the scanning operation After scanning convert the binary
18. Common Questions for information on getting the latest version of NI DAQ a If you have the required version of NI DAQ insert your National Instruments NI DAQ software CD into the CD ROM drive b Clickon the Install NI DAQ Software option in the installation window The installer guides you through the rest of the installation process National Instruments Corporation 2 1 SCXI 1104 C User Manual Chapter 2 Installation and Configuration Installing the SCXI 1104 C SCXI 1104 C User Manual The following section describes how to install your SCXI 1104 C for use with SCXI chassis and National Instruments DAQ devices Installing the SCXI 1104 C Module into the SCXI Chassis You need the following items to complete the installation SCXI 1104 C module s SCXI chassis or PXI combination chassis 1 4 in flathead screwdriver To install your SCXI 1104 C module into the SCXI chassis follow these steps while referring to Figure 2 1 1 Turn off the computer that contains device or disconnect it from your SCXI chassis Turn off the SCXI chassis Do not insert the SCXI 1104 C module into a chassis that is turned on Insert the SCXI 1104 C into an open slot in the SCXI chassis Gently guide the module into the slot guides and push it to the back of the slot until the front face of the module is flush with the front of the chassis Insert any other SCXI modules into the remaining slots in the same manner as de
19. D CH channel chassis CLK CMOS CMRR cutoff frequency SCXI 1104 C User Manual application development environment such as LabVIEW LabWindows CVI BridgeVIEW Visual Basic C and analog input ground signal analog output ground signal American Wire Gauge binary coded decimal the small current flowing into or out of the input terminals of an amplifier a voltage range spanning both negative and positive voltages the group of conductors that interconnect individual circuitry in a computer Typically a bus is the expansion vehicle to which I O or other devices are connected Examples of PC buses are the ISA bus and PCI bus Celsius chassis ground potential channel pin or wire lead to which you apply or from which you read the analog or digital signal Analog signals can be single ended or differential For digital signals you group channels to form ports Ports usually consist of either four or eight digital channels the enclosure that houses powers and controls SCXI modules clock input signal complementary metallic oxide semiconductor common mode rejection ratio the frequency that defines the upper end of the passband of a lowpass filter G 2 www ni com D A DAQ DAQD A dB DC device DGND DIFF differential input DIN DMM DOUT drivers driver software E EEPROM National Instruments Corporation G 3 Glossary digital to analog data acquisition 1 collecting and
20. MPATIBILITY PROBLEMS MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES TRANSIENT FAILURES OF ELECTRONIC SYSTEMS HARDWARE AND OR SOFTWARE UNANTICIPATED USES OR MISUSES OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED SYSTEM FAILURES ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS INCLUDING THE RISK OF BODILY INJURY AND DEATH SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE TO AVOID DAMAGE INJURY OR DEATH THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES INCLUDING BUT NOT LIMITED TO BACK UP OR SHUT DOWN MECHANISMS BECAUSE EACH END USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION INCLUDING WITHOUT LIMITATION THE APPROPRIATE DESIGN PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION Contents About This Manual undc P E ix Related Documentation
21. Remove any terminal blocks connected to the SCXI 1104 C 4 Turn off the SCXI chassis Do not remove the SCXI 1104 C module from a chassis that is turned on 5 Rotate the thumbscrews that secure the SCXI 1104 C to the chassis counter clockwise until they are loose but do not completely remove the thumbscrews 6 Remove the SCXI 1104 C by pulling steadily on both thumbscrews until the module slides completely out SCXI 1104 C User Manual 2 12 www ni com Chapter 2 Installation and Configuration 1 Cable 3 SCXI 1104 C 5 SCXI Chassis Power Switch 2 SOCXI Module Thumbscrews 4 Terminal Block 6 SCXI Chassis Figure 2 3 Removing the SCXI 1104 C Removing the SCXI 1104 C from Measurement amp Automation Explorer To remove a module from Measurement amp Automation Explorer take the following steps after entering the Measurement amp Automation Explorer utility 1 Display the list of installed devices and interfaces by clicking the next to the Devices and Interfaces icon 2 Locate the chassis in the list of installed devices Display the list of modules in the chassis by clicking the next to the Chassis icon Right click the module or chassis you want to delete and select Delete 4 You will be presented a confirmation window Click Yes to continue deleting the module or chassis or No to cancel this action National Instruments Corporation 2 13 SCXI 1104 C User Manual Chapter 2 Installation and Co
22. SCXI SCXI 1104 C User Manual 32 Channel Medium Voltage Input Module Wy NATIONAL February 2000 Edition y INSTRUMENTS Part Number 322147B 01 Worldwide Technical Support and Product Information www ni com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 794 0100 Worldwide Offices Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Brazil 011 284 5011 Canada Calgary 403 274 9391 Canada Ontario 905 785 0085 Canada Qu bec 514 694 8521 China 0755 3904939 Denmark 45 76 26 00 Finland 09 725 725 11 France 01 48 14 24 24 Germany 089 741 31 30 Greece 30 1 42 96 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico D F 5 280 7625 Mexico Monterrey 8 357 7695 Netherlands 0348 433466 New Zealand 09 914 0488 Norway 32 27 73 00 Poland 0 22 528 94 06 Portugal 351 1 726 9011 Singapore 2265886 Spain 91 640 0085 Sweden 08 587 895 00 Switzerland 056 200 51 51 Taiwan 02 2528 7227 United Kingdom 01635 523545 For further support information see the Technical Support Resources appendix To comment on the documentation send e mail to techpubs ni com Copyright 1998 2000 National Instruments Corporation All rights reserved Important Information Warranty The SCXI 1104 and SCXI 1104C modules are warranted against defects in materials and workmanship for a peri
23. annels tags in Measurement amp Automation Explorer A discussion describing how to implement multiplexed scanning in the different ADEs follows See your ADE manual and the DAQ analog input examples that come with your application software for more detailed information on programming your SCXI modules for scanning in multiplexed mode LabVIEW and the SCXI Channel String SCXI 1104 C User Manual For LabVIEW Measure and Visual Basic the channel string determines the sequence in which SCXI channels are scanned In LabVIEW an array of these channel strings configures multiple modules in the scan list When the application program runs the channel string is used for programming the channel information into the SCXI system The format of the channel string is as follows obx scy mdz channels where obx is the onboard DAQ device channel with x representing a particular channel where the multiplexed channels are sent This value is 0 for DAQ channel 0 in a single chassis system In a multichassis or remote chassis system however the DAQ device channel x corresponds to chassis number n 1 where DAQ device channel x is used for scanning the nth chassis in the system 4 2 www ni com Chapter 4 Programming scy is the SCXI chassis ID where y is the number you chose when configuring your chassis mdz is the slot position where the module is located with z being the particular slot number The slots in a chassis are numbered f
24. anual A 4 WWW ni com Common Questions This appendix lists common questions related to the use of the SCXI 1104 C What is the difference between the SCXI 1104 and SCXI 1104C The SCXI 1104 has a fixed cutoff frequency of 2 Hz The SCXI 1104C has a fixed cutoff frequency of 10 kHz They are identical in all other respects The SCXI 1104 is commonly used to measure slowly varying medium voltage signals in a high noise environment The SCXI 1104C is commonly used to measure time varying medium voltage signals What are the similarities and differences between the SC XI 1102 B C and the SCXI 1104 C These modules have a similar internal architecture Each channel has its own amplifier and filter which makes scanning trouble free compared to a shared amplifier and filter architecture All 32 differential input channels are multiplexed to a single output channel and then routed to the DAQ device either directly or through the SCXIbus Both modules have a fixed cutoff frequency You can configure the SCXI 1102 B C for a gain of either 1 or 100 while the SCXI 1104 C has a fixed gain of 0 1 only Can you use the SCXI 1104 C for mV measurements such as temperature measurement using thermocouples No The SCXI 1104 C is optimized for medium voltage measurements not low voltage measurements If you need to make low voltage measurements select the SCXI 1102 B C instead Can you read the voltage produced by the temperature sensor on t
25. canning Rear Signal Connector SCXIbus Connector and SCXIbus Interface The SCXIbus controls the SCXI 1104 C module The SCXIbus interface connects the rear signal connector to the SCXIbus allowing a DAQ device to control the SCXI 1104 C module and the rest of the chassis Digital Control Circuitry The digital control circuitry consists of the Address Handler and the following registers Module ID Configuration EEPROM Channel The Address Handler controls which register is being addressed The Module ID Register contains a code unique to each type of SCXI 1104 module SCXI 1104 C User Manual SCXI 1104 The Module ID is 45 decimal SCXI 1104C The Module ID is 47 decimal 5 2 www ni com Chapter 5 Theory of Operation The Configuration Register configures the SCXI 1104 C module for the desired scanning mode and connection to the rear signal connector The EEPROM Register is the address for interfacing with the module EEPROM which contains calibration information The Channel Register selects a channel for a single measurement or a start channel for a scan Analog Circuitry and Front Signal Connector The analog circuitry per channel consists of a lowpass filter amplifier and a divide by 10 attenuator The channels are multiplexed to a single output buffer Analog Input Channels Each of the 32 analog input channels feeds a separate amplifier and the signal passes through a three pole lowpass filter For measuremen
26. chassis Slot 0 is programmed with a module scan list that controls which module sends it output to the SCXIbus during a scan You can specify this list to scan the modules in any order with an arbitrary number of channels for each module entry in the list limited to a total of 512 channels per chassis When using LabVIEW or BridgeVIEW to develop an SCXI application all the above details are taken care of automatically If you are using a C based ADE more programming effort is required to set up a multiplexed scan National Instruments Corporation 4 1 SCXI 1104 C User Manual Chapter 4 Programming Channel Addressing Performing scanning operations in software depends on the ADE you are using While using LabVIEW Measure or Visual Basic ComponentWorks all scanning operations are prepared in software by using an SCXI channel string as the input to the channel parameter in the analog input VI or function These ADEs also support virtual channels using Data Neighborhood DAQ Channel Wizard in Measurement amp Automation Explorer In LabWindows CVI C or development environments several NI DAQ function calls need to be made to set up each module involved in the scan the chassis and the DAQ device controlling the scan In Virtual Bench the instruments that support SCXI scanning configure the channels of the module in a menu item in the graphical user interface In BridgeVIEW SCXI channels must be configured as virtual ch
27. connector or terminal block b Measure the input voltage with the DMM Call the measured voltage inputl Note If you are using a calibrator that supplies accurate voltages you can simply use the known applied voltage for input1 instead of measuring it c Measure the module output between and MCHO with the DMM Call the measured voltage output 1 6 2 www ni com Chapter 6 Calibration Repeat step 2 applying the input for the second calibration point Call the measured voltages input2 and output 2 To select positive full scale as the calibration point repeat step 2 and apply 42 V You now have two pairs of voltages input1 output1 and input2 output2 Each pair consists of an input voltage and an output voltage Convert the output voltages from volt units to your DAQ device binary unit You must take into consideration the polarity of your DAQ device its resolution 12 bits or 16 bits and gain For example if you are using the 12 bit AT MIO 16E 2 in bipolar mode with the gain set to your output voltages are represented in binary units as given by the following formula Output 5 x Guro For other DAQ devices refer to your DAQ device user manual to determine the appropriate formula You now have a new set of pairs referred to as voltage binary pairs input1 bin_output1 and input2 bin output2 Pass these pairs to the SCXI_Cal_Constants NI DAQ function or equivalen
28. d to describe the quality of a lowpass filter In general the more poles a lowpass filter has the better it attenuates frequencies beyond the cutoff frequency Return Material Authorization root mean square the square root of the average value of the square of the instantaneous signal amplitude a measure of signal amplitude reserved pin real time system integration bus the National Instruments timing bus that connects DAQ devices directly by means of connectors on top of the devices for precise synchronization of functions samples seconds an instantaneous measurement of a signal normally using an analog to digital convertor in a DAQ device G 6 WWW ni com scan SCANCLK SCXI SCXIbus SERCLK SERDATIN SERDATOUT signal conditioning Slot 0 SLOTOSEL T TTL VDC VI National Instruments Corporation G 7 Glossary a collection of samples usually with each sample coming from a different input channel scan clock signal used to increment to the next channel after each DAQ device analog to digital conversion Signal Conditioning eXtensions for Instrumentation the National Instruments product line for conditioning low level signals within an external chassis near sensors so only high level signals are sent to DAQ devices in the noisy PC environment SCXIbus refers to the backplane in the chassis A signal on the backplane is referred to as the SCXIbus signal name gt line or signal The SCXIbu
29. data to voltage data using SCXI Scale Refer to the NI DAQ User Manual for additional information on scanning with DAQ devices National Instruments Corporation 4 5 SCXI 1104 C User Manual Theory of Operation This chapter contains a functional overview of the SCXI 1104 C module and explains the operation of each functional unit making up the SCXI 1104 C module Functional Overview The block diagram in Figure 5 1 illustrates the key functional components of the SCXI 1104 C module Lowpass Filter Attenuator and Lowpass Filter Rear Signal Connector 32 to 1 Mux Front Signal Connector Lowpass Filter 28 88 58 co 28 5 SCXIbus Interface Digital Control Calibration EEPROM SCXIbus Connector Figure 5 1 SCXI 1104 C Module Block Diagram National Instruments Corporation 5 1 SCXI 1104 C User Manual Chapter 5 Theory of Operation The major components of the SCXI 1104 C module are as follows Rear signal connector SCXIbus connector SCXIbus interface Digital control circuitry Analog circuitry Front signal connector Functional Unit Description The SCXI 1104 C modules consist of 32 multiplexed input channels each capable of measuring medium voltages Each input channel has its own lowpass filter and amplifier The SCXI 1104 C module also has a digital section for automatic control of channel s
30. e already installed the appropriate software you are ready to configure the SCXI 1104 C for multiplexed mode operation Configuration and Self Test SCXI 1104 C User Manual Run Measurement amp Automation Explorer to configure and test your SCXI 1104 C If you need help during the configuration process open the Measurement amp Automation Help file by selecting Help Topics from the Help menu Follow these steps to configure your SCXI system 1 Double click the Measurement amp Automation Explorer icon your desktop Click the next to the Devices and Interfaces icon If you have added new modules to an existing chassis go to step 4 If you inserted modules into an empty chassis go to step 2 Add a new chassis to the configured Devices and Interfaces by holding down the right mouse button on Devices and Interfaces and selecting Insert Select the appropriate chassis from the list box and click OK Configure the chassis by selecting a Chassis ID This is an integer value you choose to uniquely identify the chassis for programming and scanning Select the Chassis Address This is needed to address the chassis in a multichassis SCXI system Unless you are using multiple chassis with the same DAQ device select a Chassis Address of zero which is the factory default setting of all SCXI chassis If you are using multiple chassis refer to your SCXI chassis user manual for further information For remote SCXI chassis you also n
31. e the output between and of the module To access these pins connect an NB1 50 pin ribbon cable from a CB 50 I O connector block to the module rear signal connector or to a rear signal cable adapter such as an SCXI 1349 Then connect to and on the CB 50 pins 3 and 4 respectively Gain and Offset Calibration SCXI 1104 C User Manual For two point calibration it is best to use input voltages that correspond to the signal range of interest For example if you are planning to measure bipolar voltages over the full input range of the module choose 42 V negative full scale and 42 V positive full scale as your two input voltages If you are only concerned with offset error short the input terminals and perform a one point calibration on the channel using the SCXI Cal Constants NI DAQ function or equivalent VI as described in your software documentation To determine the offset and gain calibration factors of the SCXI 1104 C module for a given channel perform the following steps for a two point calibration 1 Select the desired channel 2 Apply the input for the first calibration point To select negative full scale as the calibration point apply 42 V for an input voltage a Apply the input voltage to the channel selected in step 1 Note To make one of your calibration points be the zero point connect the positive and negative channel leads to one of the chassis ground pins on the front
32. east one simultaneous sampling module such as the SCXI 1140 SCXI 1530 or SCXI 1531 module select one of these modules to be the cabled module otherwise select one of the remaining analog input modules To connect the chassis to a DAQ device for multiplexed operation complete the following steps while referring to Figure 2 2 1 Turn off the SCXI chassis and the computer that contains the device 2 Insertthe cable adapter into the back of the SCXI chassis aligned with the module that is to be connected to the DAQ device See the installation guide for your cable assembly for more information 3 Connect the cable to the back of the cable adapter ensuring that the cable fits securely 4 Connectthe other end of the cable to the DAQ device that you will use to control the SCXI system 5 Check the cable installation making sure the connectors are securely fastened at both ends Turn on the SCXI chassis Turn on the computer 8 Ifyou have already installed the appropriate software you are ready to SCXI 1104 C User Manual configure the SCXI 1104 C module s for multiplexed mode operation See Configuration and Self Test in this chapter 2 4 www ni com Chapter 2 Installation and Configuration 1 DAQ Device 3 Cable Adapter 2 Cable 4 SOXI Chassis Power Switch Figure 2 2 Connecting an SCXI Chassis to a DAQ Device Connecting the SCXI 1104 C to a DAQ Device for Multiplexed Scanning in a PXI Co
33. eed to select the Baud Rate and COM Port After completing the chassis configuration click Next 2 6 www ni com Chapter 2 Installation and Configuration 4 You now have the choice of automatically detecting which modules are installed in the chassis or manually adding them e Ifyou have just added the chassis to Devices and Interfaces and are using an E Series or 1200 DAQ device you can automatically detect the modules e Ifthe chassis was already listed in Devices and Interfaces you must add new modules manually Go to the appropriate section that follows to continue the software configuration of your chassis Auto Detecting Modules If you selected auto detect your chassis must be connected to your DAQ device except in the case of a remote chassis which must connect to the computer using a serial port cable Before auto detecting modules do the four steps of the Configuration and Self Test section To auto detect your SCXI module s follow these steps 1 Make sure the chassis power is turned on 2 Select Yes under Auto Detect modules and click Next If your chassis is a remote SCXI chassis go to step 4 otherwise go to step 3 3 Select your communication path and click Next If modules were detected select the module connected to your DAQ device as your communication path 4 Click Finish Your Measurement amp Automation Explorer software should now recognize your SCXI chassis and SCXI module s If the
34. er using software or by modifying the circuitry of the module No channels share the same gain and cutoff frequency and you cannot modify them Some SCXI modules such as the SCXI 1112 and SCXI 1125 permit random scanning Does the SCXI 1104 C permit random scanning No You must scan channels in consecutive ascending order and you cannot repeat any channels Can I configure and use the SCXI 1104 C in parallel mode No You can only use the SCXI 1104 C in multiplexed scanning mode National Instruments Corporation B 3 SCXI 1104 C User Manual Appendix B Common Questions Which accessories can I use to connect signals to the front signal connector of the SCXI 1104 C You can use the SCXI 1300 front mounted terminal block BNC 2095 rack mounted BNC connector accessory TB X 96 DIN rail terminal block or the SCXI 1310 connector and shell kit I cannot find an installation guide for the SCXI 1300 terminal block Where can I get technical information about the SCXI 1300 terminal block You can only obtain this information from the SCXI 1100 User Manual SCXI 1104 C User Manual B 4 WWW ni com Technical Support Resources This appendix describes the comprehensive resources available to you in the Technical Support section of the National Instruments Web site and provides technical support telephone numbers for you to use if you have trouble connecting to our Web site or if you do not have internet access
35. factory determined calibration constants in the EEPROM However it is recommended that you recalibrate a module at least once per year or when you operate the module outside of the 20 30 temperature range To calibrate the SCXI 1104 C module you need to apply precision voltages to the channel inputs and or ground the channel inputs Calibration Procedure This section describes the calibration equipment requirements and explains how to calibrate the offset and gain on the SCXI 1104 C module Calibration Equipment Requirements According to standard practice the equipment you use to calibrate the SCXI 1104 C module should be ten times as accurate as the SCXI 1104 C module Calibration equipment with four times the accuracy of the SCXI 1104 C is generally considered acceptable To calibrate the SCXI 1104 C module you need a voltmeter with the following specifications e Accuracy 6 ppm standard reading X15 ppm sufficient reading e Resolution 8 5 digits National Instruments Corporation 6 1 SCXI 1104 C User Manual Chapter 6 Calibration Using a multiranging 8 5 digit digital multimeter DMM you can perform the necessary calibrations To make sure that the DMM does not introduce an additional offset error you can determine the offset error of the DMM by shorting its leads together and reading the measured value You must subtract this value the DMM offset from all subsequent measurements You need to measur
36. first data stored is the first data sent to the acceptor FIFOs are often used on DAQ devices to temporarily store incoming or outgoing data until that data can be retrieved or output For example an analog input FIFO stores the results of A D conversions until the data can be retrieved into system memory a process that requires the servicing of interrupts and often the programming of the DMA controller This process can take several milliseconds in some cases During this time data accumulates in the FIFO for future retrieval With a larger FIFO longer latencies can be tolerated In the case of analog output a FIFO permits faster update rates because the waveform data can be stored on the FIFO ahead of time This again reduces the effect of latencies associated with getting the data from system memory to the DAQ device full scale range gain the difference between the actual and intended gain of a system hexadecimal hertz the number of scans read or updates written per second inches the measurement that occurs when a signal passes on the SCXIbus from the scanned SCXI module to the cabled SCXI module the highest voltage level that you can apply to the module without damaging it G 4 www ni com IO ISA L lowpass filter LSB max MCH MIO device MSB mux NC NI DAQ NMR nonlinearity NRSE National Instruments Corporation G 5 Glossary input output the transfer of data to from a compu
37. fter entering the Measurement amp Automation Explorer utility 1 2 Verify the chassis is on and correctly connected to a DAQ device Display the list of Devices and Interfaces by clicking the next to the Devices and Interfaces icon From the list that appears locate the chassis you want to test Right click on the chassis and select Test If the communication test is successful a message The chassis has been verified appears Click OK Your SCXI system should now operate properly with your ADE software If the test did not complete successfully see the following section for troubleshooting steps Troubleshooting Self Test Verification If the preceding test did not verify your chassis configuration take the following steps to successfully complete system configuration SCXI 1104 C User Manual 1 If you getthe warning message Unable to test chassis at this time you have not designated at least one module as connected to a DAQ device Return to the Configuring the SCXI 1104 C section and change the configuration of the cabled module in your system from Connected to None to Connected to Device x If you get the warning message Failed to find followed by the module codes and the message Unable to communicate with chassis take the following troubleshooting actions a Make sure the SCXI chassis is on b Make sure the cable between the SCXI chassis and DAQ device is properly connected c Inspect the cable con
38. he SCXI 1300 terminal block when it is attached to an SCXI 1104 C No You can use only channels 0 through 31 to take voltage measurements Figure 5 1 SCXI 1104 C Module Block Diagram shows that the temperature sensor signal is not routed from the front signal connector to the SCXI 1104 C multiplexer National Instruments Corporation B 1 SCXI 1104 C User Manual Appendix B SCXI 1104 C User Manual Common Questions Which version of the NI DAQ driver software is needed to use the SCXI 1104 C NI DAQ version 6 5 1 or later is required for the SCXI 1104 NI DAQ version 6 7 or later is required for the SCXI 1104C How do I obtain the most current version of NI DAQ Visit our Web site and follow the link Download Software Drivers and Updates Search Drivers and Updates and type in the keyword NI DAQ to find the latest version of NI DAQ for your operating system I have gone over Configuration and Self Test in Chapter 2 Installation and Configuration yet I still cannot correctly test and verify that my SCXI 1104 C is working What should I do now Unfortunately there always exists the chance that something is not operating correctly in your system or the combination of the components in your system is not operating correctly together You may have to call or e mail a technical support representative The technical support representative will often suggest additional troubleshooting measures to isolate the problem If reques
39. he Self Test Verification section and retest your SCXI chassis If these measures do not successfully configure your SCXI system see Appendix B Common Questions for more information Removing the SCXI 1104 C This section will show you how to remove the SCXI 1104 C from an SCXI chassis Removing the SCXI 1104 C from an SCXI Chassis Only a qualified person who has read and understands all the safety information in this manual should remove an SCXI module disconnect signals or remove the SCXI 1104 C from the chassis You need the following items to remove the SCXI 1104 C module e SCXI chassis or PXI combination chassis with the SCXI 1104 C module s installed 1 4 in flathead screwdriver National Instruments Corporation 2 11 SCXI 1104 C User Manual Chapter 2 Installation and Configuration Consult the documentation for your SCXI PXI chassis and accessories for additional instructions and warnings To remove the SCXI 1104 C module from an SCXI chassis follow the steps that follow while referring to Figure 2 3 1 IftheSCXI 1104 C is the cabled module disconnect the cable running from the SCXI 1104 C to the device UN Caution Read the safety information in the appropriate section that follows and in the associated terminal block installation guide before adding or removing any signals from the SCXI module or terminal block 2 Remove all signals from the terminal block connected to the SCXI 1104 C 3
40. ion The reader should consult National Instruments if errors are suspected In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMER S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owner s failure to follow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accident ac
41. is connected to a single input channel on a DAQ device Digital timing signals automatically synchronize the module multiplexer with the DAQ device analog to digital converter ADC permitting the NI DAQ driver software to match up voltage readings with the channel of origin The power of SCXI multiplexed scanning is its ability to route many conditioned input channels spanning many modules or chassis to a single input channel on a DAQ device When you configure a module for multiplexed operation the physical routing of multiplexed signals to the DAQ device depends on which module in the SCXI system is the cabled module The cabled module is the module that connects directly to the DAQ device using an SCXI cable assembly If the module you are scanning is not directly cabled to the DAQ device the module routes its output signal through the SCXIbus to the cabled module The cabled module whose internal routing is controlled by the SCXI chassis routes the SCXIbus signal through internal analog bus switches to the DAQ device It uses the MCHO terminals on the rear signal connector as shown in Figure 3 2 SCXI 1104 C Module Rear Signal Connector Pin Assignments and Figure 5 1 SCXI 1104 C Module Block Diagram If the module you are scanning is the cabled module the inputs signals pass through the multiplexer of the module directly to the MCHO terminals without the aid of the SCXIbus Immediately prior to a multiplexed scanning operation the SCXI
42. lifier You can multiplex the SCXI 1104 C inputs to a single module output that drives a DAQ device input channel SCXI 1104 On each channel the SCXI 1104 has a three pole lowpass filter with a 2 Hz cutoff frequency to reject 60 Hz noise SCXI 1104C On each channel the SCXI 1104C has a three pole lowpass filter with a 10 kHz cutoff frequency Detailed specifications of the SCXI 1104 C modules are in Appendix A Specifications Figure 5 1 SCXI 1104 C Module Block Diagram shows a block diagram of the SCXI 1104 C National Instruments Corporation 1 1 SCXI 1104 C User Manual Chapter 1 Introduction What You Need to Get Started SCXI 1104 C User Manual To install configure and use your SCXI 1104 C you will need the following items One of the following modules SCXI 1104 SCXLI 1104C SCXI 1104 C User Manual One of the following connectivity devices SCXI 1300 BNC 2095 96 SCXI 1310 One of the following software packages and its documentation ComponentWorks LabVIEW for Macintosh LabVIEW for Windows LabWindows CVI for Windows Measure VirtualBench One of the following device drivers NI DAQ for Macintosh NI DAQ for PC Compatibles Your computer with an installed DAQ device An SCXI chassis with an AC power cord and the appropriate cable assembly Small Phillips head screwdriver 1 4 in flathead screwdriver
43. mbination Chassis This configuration allows you to multiplex all 32 channels of your SCXI 1104 C into a single channel of your DAQ device in a combination PXI chassis You need the following items for this installation combination chassis with the SCXI modules installed e National Instruments PXI MIO device installed in the right most slot Consult your PXI chassis documentation other SCXI module documentation and DAQ device documentation for additional instructions and warnings You should have already installed your SCXI 1104 C module and any other SCXI modules in the chassis according to their National Instruments Corporation 2 5 SCXI 1104 C User Manual Chapter 2 Installation and Configuration installation instructions To use the SCXI 1104 C module in multiplexed mode with a DAQ device in a PXI combination chassis follow these steps 1 2 No cables are required between the SCXI 1104 C device if the National Instruments PXI DAQ device is installed in the right most slot This device can be configured to control the SCXI system using an internal bus that connects the PXI chassis to the SCXI chassis If the DAQ device for controlling the SCXI system is not installed in the right most slot of the PXI combination chassis configure the system as described earlier in Connecting the SCXI 1104 C to a DAQ Device for Multiplexed Scanning in an SCXI Chassis Turn on the SCXI chassis If you hav
44. measuring electrical signals from sensors transducers and test probes or fixtures and inputting them to a computer for processing 2 collecting and measuring the same kinds of electrical signals with A D and or DIO devices plugged into a computer and possibly generating control signals with D A and or DIO devices in the same computer the signal used to indicate whether the SERDATIN pulse train transmitted to the SCXI chassis contains data or address information decibel the unit for expressing a logarithmic measure of the ratio of two signal levels dB220log o V1 V2 for signals in volts direct current a plug in data acquisition board module card or pad that can contain multiple channels and conversion devices SCXI modules are distinct from devices with the exception of the SCXI 1200 which is a hybrid digital ground signal differential input mode an analog input consisting of two terminals both of which are isolated from computer ground whose difference is measured Deutsche Industrie Norme digital multimeter digital output signal software that controls a specific hardware device such as a DAQ device electrically erasable programmable read only memory ROM that can be erased with an electrical signal and reprogrammed SCXI 1104 C User Manual Glossary FIFO FSR G G gain error in indirect scanning input damage level SCXI 1104 C User Manual farads first in first out memory buffer the
45. nectors for bent pins d Make sure you are using the correct National Instruments cable assembly e Test your DAQ device to verify it is working properly See your DAQ device user manual for more information 2 10 www ni com Chapter 2 Installation and Configuration 3 Ifyou get the warning message Failed to find followed by module codes and then the message Instead found module with ID OXxx return to the Configuring the SCXI 1104 C section and make sure the correct module is in the specified slot Delete the incorrect module as described in the Removing the SCXI 1104 C from Measurement amp Automation Explorer section and then add the correct module as described in the Manually Adding Modules section 4 Ifyou get the warning message Failed to find followed by a module code and then the message Slot x is empty check to see if the configured module is installed in the specified slot If not install the module by referring to the previous section Installing the SCXI 1104 C Module into the SCXI Chassis If the module is installed in the correct slot turn off the chassis remove the module as specified in Removing the SCXI 1104 C from an SCXI Chassis and verify that no connector pins are bent on the rear signal connector Reinstall the module as shown in Installing the SCXI 1104 C Module into the SCXI Chassis ensuring the module is fully inserted and properly aligned in the slot 5 After checking the preceding items return to t
46. nfiguration 5 Note Deleting the SCXI chassis deletes all modules in the chassis All configuration information for these modules is also lost Your SCXI chassis and or SCXI module s should now be removed from the list of installed devices in Measurement amp Automation Explorer SCXI 1104 C User Manual 2 14 www ni com Signal Connections This chapter describes the input and output signal connections to the SCXI 1104 C module using the front and rear signal connectors This chapter also includes specifications and connection instructions for the signals on SCXI 1104 C connectors Caution Static electricity is a major cause of component failure To prevent damage to the electrical components in the module use antistatic techniques whenever removing a module from the chassis or whenever touching a module The following accessories are available to connect signals to the front of an SCXI 1104 C module e SCXI 1300 screw terminal connection front mount terminal block e SCXI 1310 solder connection front mount connector and shell assembly e BNC 2095 BNC connection rack mount accessory e TBX 96 screw terminal connection DIN rail terminal block Installation guides for these accessories may contain useful signal connection information beyond what is given in this chapter National Instruments Corporation 3 1 SCXI 1104 C User Manual Chapter 3 Signal Connections Front Signal Connector SCXI 1104 C User Manual Fig
47. nnel is 60 VDC with respect to the chassis ground This common mode input range for either positive or negative channel input terminal is the maximum input voltage that results in a valid measurement Subject to the limits stated above you can connect either floating or ground referenced signal sources to the SCXI 1104 C input channels without using bias resistors UN Cautions Exceeding the input damage level 42 VAC 4 or 60 VDC between input channels and chassis ground can damage the SCXI 1104 C module the SCXIbus and the DAQ device National Instruments is not liable for any damage or injuries resulting from such signal connections Applying a voltage greater than 42 VAC eak or 60 VDC to the SCXI 1104 C is an electrical shock hazard National Instruments is not liable for any damages or injuries resulting from such voltage application National Instruments Corporation 3 3 SCXI 1104 C User Manual Chapter 3 Signal Connections Rear Signal Connector 5 Note If you are using the SCXI 1104 C module with a National Instruments DAQ device and cable assembly you do not need to read the remainder of this chapter If you are using the SCXI 1180 feedthrough panel the SCXI 1343 rear screw terminal adapter or the SCXI 1351 one slot cable extender with the SCXI 1104 C module read this section SCXI 1104 C User Manual Figure 3 2 shows the SCXI 1104 C module rear signal connector pin assignments AOGND
48. od of one year from the date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this document is accurate The document has been carefully reviewed for technical accuracy In the event that technical or typographical errors exist National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edit
49. or 3 4 to 3 6 analog output signal connections 3 6 damage from external voltage to output caution 3 6 digital I O signal connections 3 6 pin assignments figure 3 4 signal descriptions table 3 5 static electricity hazard caution 3 1 SLOTOSEL signal table 3 5 3 6 software installation 2 1 NI DAQ version required B 2 software related resources C 2 specifications amplifier characteristics A 2 digital signals A 2 dynamic characteristics A 2 environment A 3 filters A 3 SCXI 1104 C User Manual l 4 input characteristics A 1 physical A 3 power requirements A 4 stability A 3 transfer characteristics A 1 T technical support resources C 1 to C 2 theory of operation 5 1 to 5 3 analog bus switch 5 3 analog circuitry 5 3 analog input channels 5 3 block diagram 5 1 digital control circuitry 5 2 to 5 3 front signal connector 5 3 functional overview 5 1 to 5 2 rear signal connector 5 2 SCXIbus connector and SCXIbus interface 5 2 transfer characteristics A 1 troubleshooting See questions and answers U unpacking SCXI 1104 C 1 3 V virtual channel string 4 3 to 4 4 W Web support from National Instruments C 1 to C 2 online problem solving and diagnostic resources C 1 software related resources C 2 Worldwide technical support C 2 WWW ni com
50. or 19 to connect to the analog ground AGND of the module You can use the pin that is connected to AGND as a general analog power ground tie point to the SCXI 1104 C module if necessary Caution The SCXI 1104 C module analog output is not overvoltage protected Applying external voltages to this output can damage the SCXI 1104 C module National Instruments is not liable for any damage resulting from such signal connections SCXI 1104 C User Manual Note The SCXI 1104 C module analog outputs are short circuit protected Digital 1 0 Signal Connections Pins 24 through 27 29 33 36 37 43 and 46 constitute the digital I O lines of the rear signal connector The SCXI 1104 C module digital input and output signals correspond to the digital I O lines of E Series MIO DAQ devices Table 3 1 lists the equivalencies Table 3 1 SCXIbus to SCXI 1104 C Module Rear Signal Connector to DAQ Device Pin Equivalencies SCXI 1104 C Rear E Series MIO DAQ SCXIbus Line Signal Connector Device MOSI SERDATIN DIOO D A DAQD A DIO1 INTR SLOTOSEL DIO2 SPICLK SERCLK EXTSTROBE MISO SERDATOUT DIO4 TRIGO SCANCLK SCANCLK 3 6 www ni com Programming You can configure the SCXI 1104 C to operate in multiplexed scanning mode as described in Chapter 2 Installation and Configuration Using this mode of operation you can sequentially route all input channels of the SCXI 1104 C to one output channel that
51. r from the keyboard sections of code programming examples and syntax examples This fontis also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions operations variables filenames and extensions and code excerpts Bold text in this font denotes the messages and responses that the computer automatically prints to the screen This font also emphasizes lines of code that are different from the other examples Refers to both the SCXI 1104 and SCXI 1104C modules Related Documentation SCXI 1104 C User Manual The SCXI 1104 C User Manual is one piece of the documentation set for your data acquisition system You could have any of several types of manuals depending on the hardware and software in your system Use the manuals you have as follows e SCXI Quick Start Guide This document describes how to quickly install and configure your SCXI module e Getting Started with SCXI This is the first manual you should read It gives an overview of the SCXI system and contains the most commonly needed information for the modules chassis and software e Your SCXI module user manuals Read these manuals next for detailed information about signal connections and module configuration They also explain in greater detail how the module works and contain application hints e Your DAQ hardware user manuals These manuals have detailed information about the DAQ hardware
52. rom left to right starting with 1 Note Note that the obx specifier is optional and causes the gains on the module and DAQ device to be automatically set to fit the input limits parameter When this specifier is omitted the default gain on the DAQ device usually the lowest gain is used The last parameter channels is the list of channels scanned for module z It can have several formats e scy mdz n where n is a single input channel scy mdz nl n2 where n1 and n2 represent a sequential list of input channels inclusive LabVIEW and the Virtual Channel String For LabVIEW BridgeVIEW Measure and Visual Basic the channel string can also contain virtual channels For the SCXI 1104 C these virtual channels are analog input channels you create that have custom names called tags in BridgeVIEW and perform scaling and linearization transparently without additional programming effort Virtual channels are useful when sensors requiring different scaling factors are connected to the same SCXI 1104 C channel at different points in time Using virtual channels you can use sensors needing special scaling in a generic analog input application without performing hard coded scaling or linearization If the scaling changes or you want to connect a different sensor to your SCXI 1104 C no changes are needed in the application All you need to do is create a different virtual channel and use its name in the channel
53. s descriptor may be omitted when the meaning is clear Descriptions of many SCXIbus signals are in Chapter 3 Signal Connections serial clock signal serial data input signal serial data output signal the manipulation of signals to prepare them for digitizing refers to the power supply and control circuitry in the SCXI chassis Slot 0 select signal transistor transistor logic volts volts direct current virtual instrument 1 a combination of hardware and or software elements typically used with a PC that has the functionality of a classic stand alone instrument 2 a LabVIEW software module VI which consists of a front panel user interface and a block diagram program SCXI 1104 C User Manual Glossary Vin volts input high Vit volts input low Vin volts in Vou volts output high VoL volts output low working voltage the highest voltage that should be applied to a product in normal use normally well under the breakdown voltage for safety margin SCXI 1104 C User Manual G 8 WWW ni com Index Numbers 5 V signal table 3 3 A accessories for connecting signals 3 1 B 4 Address Handler 5 2 amplifier characteristics A 2 analog bus switches 5 3 analog circuitry 5 3 analog input input characteristics A 1 signal connections 3 3 to 3 4 analog input channels 5 3 auto detection of modules 2 7 block diagram of SCXI 1104 C 5 1 C C language and low level DAQ functions 4 4 to 4 5 cables c
54. scribed in step 3 Secure all the SCXI modules to the SCXI chassis using both thumbscrews 2 2 www ni com Chapter 2 Installation and Configuration 1 SOCXI Chassis Power Switch 2 SCXI Chassis Slots 3 SCX Module Thumbscrews Figure 2 1 Installing the SCXI 1104 C Module To complete your SCXI 1104 C installation follow the procedure in the appropriate sections that follow Connecting the SCXI 1104 C to a DAQ Device for Multiplexed Scanning in an SCXI Chassis This configuration allows you to multiplex all 32 input channels of the SCXI 1104 C into a single channel of your DAQ device You need the following items for this installation SCXIchassis with the SCXI modules installed e SCXIcable assembly which consists of a cable adapter and a cable An installed National Instruments DAQ device 1 41 flathead screwdriver Consult your SCXI chassis documentation other SCXI module documentation and DAQ device documentation for additional instructions and warnings Your SCXI 1104 C module and any other SCXI modules National Instruments Corporation 2 3 SCXI 1104 C User Manual Chapter 2 Installation and Configuration should already be installed in the chassis according to their installation instructions You must select one of the analog input modules in the chassis to be the cabled module the module to which the SCXI cable assembly will be connected If the chassis contains at l
55. shooting 2 10 to 2 11 Module ID Register 5 2 multiplexed scanning 4 1 to 4 5 channel addressing 4 2 to 4 3 LabVIEW and SCXI channel string 4 2 to 4 3 LabVIEW and virtual channel string 4 3 to 4 4 connecting SCXI 1104 C to DAQ device in PXI combination chassis 2 5 to 2 6 in SCXI chassis 2 3 to 2 5 overview 4 1 performing scans C and low level DAQ functions 4 4 to 4 5 steps 4 4 WWW ni com National Instruments Web support C 1 to C 2 NI DAQ version required B 2 0 online problem solving and diagnostic resources C 1 P physical specifications A 3 power requirements A 4 problem solving and diagnostic resources online C 1 programming 4 1 to 4 5 C and low level DAQ functions 4 4 to 4 5 channel addressing 4 2 to 4 4 LabVIEW and SCXI channel string 4 2 to 4 3 LabVIEW and virtual channel string 4 3 to 4 4 multiplexed scanning 4 4 overview 4 1 to 4 2 PXI combination chassis 2 5 to 2 6 Q questions and answers B 1 to B 4 R rear signal connector 3 4 to 3 6 damage from external voltage to output caution 3 6 digital I O signal connections 3 6 functional description 5 2 pin assignments figure 3 4 National Instruments Corporation I 3 Index SCXIbus to SCXI 1104 C module rear signal connector to DAQ device pin equivalencies table 3 6 signal descriptions table 3 5 registers in digital control circuitry 5 2 to 5 3 removing SCXI 1104 C 2 11 to 2 14 from Measurement amp Au
56. software did not recognize your module s check your cable connections and retry auto detecting or try installing the modules manually before taking troubleshooting measures If the software recognized any module as an SCXI custom module you may be using the wrong version of NI DAQ See Appendix B Common Questions for information on getting the latest version of NI DAQ National Instruments Corporation 2 SCXI 1104 C User Manual Chapter 2 Installation and Configuration Manually Adding Modules If you did not auto detect your SCXI modules you must add each of your modules separately If you are still in the Chassis Configuration window select No under Auto Detect modules and click Finish Use the following steps to manually add modules 1 Display the list of devices and interfaces by clicking the next to the Devices and Interfaces icon 2 Locate the SCXI chassis in the list Display the list of modules in the chassis by clicking the next to the Chassis icon 3 Right click the appropriate installation slot and click Insert 4 Select the module installed in that slot and click Next If the appropriate module name does not appear on the list you may be using the incorrect version of NI DAQ See Appendix B Common Questions for information on getting the latest version of NI DAQ 5 Configure your module as follows a Ifthe selected module is connected to a National Instruments DAQ device select that device by using
57. t VI as described in your software documentation S Note When you use 0 V and positive full scale for your two calibration points you eliminate the error at 0 V and at positive full scale voltage However because of nonlinearity the error at the negative full scale voltage is two times the nonlinearity error This is also true for the positive full scale voltage if you use the negative full scale voltage and 0 V as your two calibration points When you make a measurement using National Instruments software the driver automatically uses the calibration constants to correct the measured voltages National Instruments Corporation 6 3 SCXI 1104 C User Manual Specifications Analog Input This appendix lists the specifications for the SCXI 1104 C module These specifications are typical at 25 C unless otherwise noted Input Characteristics Number of channels 32 differential Input signal ranges 30 VAC ins 42 VAC peak 60 VDC Max working voltage signal common mode Each input should remain within 42 VAC 60 VDC of CGND Input damage level 42 VAC eax or 60 VDC Inputs protected CH lt 0 31 gt Common mode input range 60 VDC with respect to CGND Transfer Characteristics Nonlinearity eene 0 01 FSR Offset error After
58. t accuracy of 0 012 of full scale the minimum scan interval is 3 us This is the smallest interval in which you can switch between analog channels on the module and still measure voltages accurately The 3 interval gives you a maximum sampling rate of 333 kHz Because this rate is much higher than the bandwidth of a single SCXI 1104 C channel you can sample multiple channels on multiple SCXI modules without undersampling one of the SCXI 1104 C channels Analog Bus Switches The SCXI 1104 C module contains switches to route the multiplexer output to the SCXIbus The SCXI 1104 C module also contains a switch to receive a signal placed on the SCXIbus by another SCXI module The output buffer of the cabled module drives a received signal onto the line of its rear signal connector so that the device can read it When a signal passes on the SCXIbus from the scanned SCXI module to the cabled SCXI module the measurement is known as indirect scanning National Instruments Corporation 5 3 SCXI 1104 C User Manual Calibration This chapter discusses the calibration procedures for the SCXI 1104 C module Overview Using the procedure described in this chapter you can calculate the gain error and voltage offset on a per channel basis You can store these constants in the onboard EEPROM for future use and for automatic calibration when you are using National Instruments software The module comes from the factory with
59. tates contact your local branch office Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Brazil 011 284 5011 Canada Calgary 403 274 9391 Canada Ontario 905 785 0085 Canada Qu bec 514 694 8521 China 0755 3904939 Denmark 45 76 26 00 Finland 09 725 725 11 France 01 48 14 24 24 Germany 089 741 31 30 Greece 30 1 42 96 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico D F 5 280 7625 Mexico Monterrey 8 357 7695 Netherlands 0348 433466 New Zealand 09 914 0488 Norway 32 277 73 00 Poland 0 22 528 94 06 Portugal 351 1 726 9011 Singapore 2265886 Spain 91 640 0085 Sweden 08 587 895 00 Switzerland 056 200 51 51 Taiwan 02 2528 7227 United Kingdom 01635 523545 C 2 www ni com Glossary Prefix Meanings Value p pico 10 2 n nano 107 p micro 10 5 m milli 10 3 kilo 103 M mega 106 G giga 10 Numbers Symbols 5 V 5 volt signal E degrees Q ohms percent I plus or minus A amperes AC alternating current ACH analog input channel signal A D analog to digital ADC analog to digital converter an electronic device often an integrated circuit that converts an analog voltage to a digital number National Instruments Corporation G 1 SCXI 1104 C User Manual Glossary ADE AIGND AOGND AWG BCD bias current bipolar bus CGN
60. ter system involving communications channels operator interface devices and or data acquisition and control interfaces Industry Standard Architecture a filter that passes signals below a cutoff frequency while blocking signals above that frequency least significant bit maximum multiplexed channel refers to the multifunction I O devices that have MIO or 60XX in their names most significant bit multiplexer not connected signal the driver software needed in order to use National Instruments DAQ devices and SCXI components normal mode rejection a measure in percent of full scale range of the worst case deviation from the ideal transfer function of an amplifier which is a straight line nonreferenced single ended mode all measurements are made with respect to a common NRSE measurement system reference but the voltage at this reference can vary with respect to the measurement system ground SCXI 1104 C User Manual Glossary 0 offset error OUT OUTREF P PC PCMCIA pole RSVD RTSI bus sample SCXI 1104 C User Manual the output of a system with a zero volt input output signal output reference signal personal computer an expansion bus architecture that has found widespread acceptance as a de facto standard in notebook size computers It originated as a specification for add on memory cards written by the Personal Computer Memory Card International Association A term use
61. the Connected to control If itis not select none If you want this DAQ device to control the chassis confirm that there is a check in the checkbox labeled This device will control the chassis b Selectthe multiplexed scanning mode for your SCXI 1104 C by using the Operating Mode control Click Next c Review the gain and filter settings for all channels on the SCXI 1104 C Click Next d Selectthe accessory you are using with this module When you have completed configuration click Finish If you need to manually install more SCXI 1104 C modules in your chassis repeat steps 3 through 5 to configure each module Your SCXI chassis and SCXI module s should now be configured properly If you need to change your module configuration see the next section Configuring the SCXI 1104 C If your configuration is complete test the system as described in Self Test Verification in this chapter to ensure your SCXI system is communicating properly with the DAQ device SCXI 1104 C User Manual 2 8 www ni com Chapter 2 Installation and Configuration Configuring the SCXI 1104 C To configure your SCXI 1104 C after auto detection or to alter your original configuration selections you must use the configuration utility in Measurement amp Automation Explorer Perform the following steps to configure your SCXI 1104 C 1 Run Measurement amp Automation Explorer by double clicking its icon on your desktop 2 Display the list of installed
62. ting technical support by phone have your system nearby so you can try these measures immediately National Instruments contact information is listed in Appendix C Technical Support Resources How do I configure an SCXI 1200 for use with an SCXI 1104 C module When using the SCXI 1200 with the SCXI 1104 C make sure the SCXI 1200 is configured for NRSE mode in the Measurement amp Automation Explorer Can I use onboard channels one through seven on the DAQ device if it is connected directly to an SCXI 1104 C module Yes Only onboard channel zero is reserved for use by the SCXI chassis in this case B 2 WWW ni com Appendix B Common Questions Which digital lines are unavailable on the DAQ device if it is directly connected to an SCXI 1104 C module Table B 1 shows the digital lines that are used by the SCXI 1104 C for communication and scanning These lines are unavailable for general purpose digital I O if the SCXI 1104 C is connected to the DAQ device Table B 1 Digital Signals on the SCXI 1104 C DAQ Signal 50 Pin 68 Pin Name SCXI Signal Name Connector Connector Direction DIOO SERDATIN 25 52 Output DIO4 SERDATOUT 26 19 Input DIO1 DAQD A 27 17 Output DIO2 SLOTOSEL 29 49 Output SCANCLK SCANCLK 36 46 Output EXTSROBE SERCLK 37 45 Output STARTSCAN SYNC 46 38 Output Is there any way to change the cutoff frequency and gain of each channel on an SCXI 1104 C module eith
63. tions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation Trademarks BridgeVIEW ComponentWorks LabVIEW Measure National Instruments ni com NI DAQ RTSI SCXI and VirtualBench are trademarks of National Instruments Corporation Product and company names mentioned herein are trademarks or trade names of their respective companies WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS 1 NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN 2 IN ANY APPLICATION INCLUDING THE ABOVE RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY COMPUTER HARDWARE MALFUNCTIONS COMPUTER OPERATING SYSTEM SOFTWARE FITNESS FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION INSTALLATION ERRORS SOFTWARE AND HARDWARE CO
64. tomation Explorer 2 13 to 2 14 from SCXI chassis 2 11 to 2 13 requirements for getting started 1 2 S SCANCLK signal table 3 5 3 6 SCXI channel string 4 2 to 4 3 SCXI 1102 compared with SCXI 1104 C B 1 SCXI 1104 C block diagram 5 1 calibration 6 1 to 6 3 common questions B 1 to B 4 configuration and self test 2 6 to 2 11 custom cables table 1 3 differences between SCXI 1104 and SCXI 1104 C B 1 digital signals table B 3 installation 2 2 to 2 8 overview 1 1 requirements for getting started 1 2 SCXIbus to SCXI 1104 C module rear signal connector to DAQ device pin equivalencies table 3 6 signal connections 3 1 to 3 6 specifications A 1 to A 4 unpacking 1 3 SCXI 1200 device using with SCXI 1104 C B 2 SCXI 1300 terminal block B 4 SCXIbus connector and SCXIbus interface 5 2 SCXI 1104 C User Manual Index SCXIbus to SCXI 1104 C module rear signal connector to DAQ device pin equivalencies table 3 6 self test verification 2 10 troubleshooting 2 10 to 2 11 B 2 SERCLK signal table 3 5 3 6 SERDATIN signal table 3 5 3 6 SERDATOUT signal table 3 5 3 6 signal connections 3 1 to 3 6 digital signals table B 3 front signal connector 3 2 to 3 4 accessories for connecting signals 3 1 B 4 analog input signal connections 3 3 to 3 4 exceeding input damage level caution 3 3 pin assignments figure 3 2 signal descriptions table 3 3 overview 3 1 rear signal connect
65. truments Signal Conditioning eXtensions for Instrumentation Series that are designed for use with National Instruments data acquisition DAQ devices These modules are designed for signal conditioning of medium voltage signals 30 VAC ims 42 VAC peak 60 VDC The SCXI 1104 C modules have 32 differential analog input channels lt gt bold italic The following conventions appear in this manual Angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name for example DBIO lt 3 0 gt The symbol indicates that the following text applies only to a specific product a specific operating system or a specific software version This icon denotes a note which alerts you to important information This icon denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash Bold text denotes items that you must select or click on in the software such as menu items and dialog box options Bold text also denotes parameter names Italic text denotes variables emphasis a cross reference or an introduction to a key concept This font also denotes text that is a placeholder for a word or value that you must supply National Instruments Corporation ix SCXI 1104 C User Manual About This Manual monospace monospace bold SCXI 1104 C Text in this font denotes text or characters that you should ente
66. ure 3 1 shows the pin assignments for the SCXI 1104 C module front signal connector CGND NC NC NC NC NC NC NC CGND NC NC NC NC NC NC NC CGND NC NC NC NC NC NC NC NC NC NC CGND RSVD RSVD CGND 5 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 P ow BR Oo CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 CH16 CH17 CH18 CH19 CH20 CH21 CH22 CH23 CH24 CH25 CH26 CH27 CH28 CH29 CH30 CH31 UJ lt a N cx AR er k k N CH0O CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 CH16 CH17 CH18 CH19 CH20 CH21 CH22 CH23 CH24 CH25 CH26 CH27 CH28 CH29 CH30 CH31 99
67. ustom table 1 3 calibration 6 1 to 6 3 equipment requirements 6 1 to 6 2 gain and offset calibration 6 2 to 6 3 overview 6 1 CGND signal table 3 3 1 through signals table 3 3 CH31 through signals table 3 3 channel addressing 4 2 to 4 4 LabVIEW and SCXI channel string 4 2 to 4 3 LabVIEW and virtual channel string 4 3 to 4 4 National Instruments Corporation Channel Register 5 3 channels onboard questions about B 2 common questions B 1 to B 4 configuration 2 6 to 2 11 auto detecting modules 2 7 configuration reconfiguration 2 9 manually adding modules 2 8 SCXI 1200 device for use with SCXI 1104 C B 2 self test verification 2 10 steps for 2 6 to 2 7 troubleshooting self test verification 2 10 to 2 11 B 2 Configuration Register 5 3 connecting SCXI 1104 C to DAQ device in PXI combination chassis 2 5 to 2 6 in SCXI chassis 2 3 to 2 5 connectors See front signal connector rear signal connector conventions used in manual ix x custom cables table 1 3 D DAQ device connecting with SCXI 1104 C for multiplexed scanning in PXI combination chassis 2 5 to 2 6 in SCXI chassis 2 3 to 2 5 unavailable digital lines B 3 DAQD A signal table 3 5 3 6 DGND signal table 3 5 diagnostic resources online C 1 digital control circuitry 5 2 to 5 3 digital signals digital signals for rear connector 3 6 SCXI 1104 C User Manual Index SCXIbus to SCXI 1104 C module

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