Home

DT9824 User's Manual

1. 89 Appendix A 90 Regulatory Specifications The DT9824 module is CE compliant Table 28 lists the regulatory specifications for the DT9824 module Table 28 Regulatory Specifications Feature Specifications Emissions EMI FCC Part 15 Class A EN55011 2007 Based on CISPR 11 2003 A2 2006 Immunity EN61326 1 2006 Electrical Equipment for Measurement Control and Laboratory Use EMC Requirements EN61000 4 2 2009 Electrostatic Discharge ESD 4 kV contact discharge 8 kV air discharge 4 kV horizontal and vertical coupling planes EN61000 4 3 2006 Radiated electromagnetic fields 3 V m 80 to 1000 MHz 3 V m 1 4 GHz to 2 GHz 1 V m 2 GHz to 2 7 GHz EN61000 4 4 2004 Electrical Fast Transient Burst EFT 1 kV on data cables EN61000 4 6 2009 Conducted immunity requirements 3 Vrms on data cables 150 kHz to 80 MHz RoHS EU Directive 2002 95 EG Compliant as of July 1st 2006 Safety UL CSA Specifications Connector Specifications Table 29 lists the cable and connector specifications for the DT9824 module Table 29 DT9824 Cable and Connector Specifications Feature DT9824 Specifications USB cable 2 meter Type A B USB cable Data Translation part 17394 or AMP partit 974327 1 4 position Screw terminal block Header Phoenix Contact 1803293 Plug Phoenix Contact 1803594 37 pin Digital I O connector Connector on mod
2. Gain 1 0 001 Gain 8 0 003 Gain 16 0 005 Gain 32 0 010 Nonlinearity integral Gain 1 5 ppm full scale maximum Gain gt 1 15 ppm full scale maximum Differential linearity 1 0 LSB no missing codes Input range Gain 1 10V Gain 8 1 25 V Gain 16 0 625 V Gain 32 0 3125 V 82 Specifications Table 22 A D Subsystem Specifications cont Feature DT9824 Specifications Offset drift versus temperature lt 600Hz 600Hz 50 nv C 150 nV C Offset drift versus time 25 nV 1000 hours typical Gain drift versus temperature 10 ppm C Gain drift versus time 10 ppm 1000 hours typical Input impedance Power off Power on 3kQ 10 MQ 3 kQ in series with 4700 pF Input bias current 1 nA Input noise 8 10 Hz sample rate gain of 1 3 6 UV rms 23 6 uV pp or lt 1 5 ppm see Figure 17 on page 84 System noise See Table 23 and Figure 18 on page 85 Analog input filter 10 kHz Common mode rejection 10 Hz gt 150 dB 50 Hz and 60 Hz Common mode voltage 500 V maximum operational Maximum input voltage 40 V maximum protection Channel to channel offset 10 uV Effective number of bits ENOB 10 Hz with a 1 Hz 9 9 V sine wave input 21 bits typical Channel crosstalk 150 dB 1 kHz Input coupling DC Isolation voltage
3. 500 V to computer ground Channel to channel isolation 500 V ESD protection Arc 8 kV Contact 4 kV Internal reference 1 25 V 0 001 V 3 dB point low pass Sample rate less than or equal to 600 Samples s Sample greater than 600 Samples s f 3 dB 0 24 x fADC f 3 dB 0 23 x fADC Internal clock 100 ppm maximum typical initial 25 ppm Warm up time 1 hour a Refer to page 85 for more information about the frequency response input bandwidth and correction factors b This clock is derived from the crystal oscillator The specification includes initial tolerance power supply variations temperature drift and 1 year stability 83 Appendix A Noise Figure 17 shows the maximum noise measurement at 10 Hz with a gain of 1 DT9824 Maximum Noise 1 5 ppm 100 80 60 40 20 20 E SS Ch0 10V Range Microvolts o 0 1 2 3 4 5 6 7 Time in Minutes Figure 17 Maximum Noise Measurement During Typical Usage at 10 Hz with a Gain of 1 Figure 23 shows the typical RMS noise in microvolts of the DT9824 at sampling rates of 10 Samples s 100 Samples s 960 Samples s and 4800 Samples s and gains of 1 8 16 and 32 Table 23 DT9824 System Noise Gain 10 Samples s 100 Samples s 960 Samples s 4800 Samples s 1 3 6 ui Vrms 12 0 uVrms 25 0 u Vrms 63 0 uVrms 8 0 7 uVrms 2 0 uVrms 4 2 uVr
4. rr 35 Connecting Digital Output Signals nenn 36 Chapter 4 Verifying the Operation of the Module u 37 Running the Quick DataAcq Application ee 39 Testing Single Value Analog Input nenn 40 Testing Continuous Analog Input 6 0 ee 41 Testing Single Value Digital Input e nennen 42 Testing Single Value Digital Output eh 43 Part 2 Using Your Module lllleeeeeeeess 45 Contents Chapter 5 Principles of Operation ooooocooccoconco eee 47 Analog InputFeatures lesse n 49 Analog Input Channels u sr m yep m e Ra a e e 49 Specifying a Single Analog Input Channel rnrn 49 Specifying One or More Analog Input Channels rnane 49 Specifying the Digital Input Port in the Analog Input Channel List 50 Input Resolution s etis oo taque el a A eta 50 Input Ranges and Gains ooo 50 A D Sample Clock xe eth tens ma mee e mee ae a ae 50 E Asi c O Cx tcd ut Ed tbt ec ted d id 51 Analog Input Conversion Modes sss 51 Data Format ans s resis raras Ls idu bua s dg URN p UR 52 D ta Transferi te eU ERI e eer AI dee AI bee ded 53 Error Conditions 2 d deR a ete eR nep epe eI E END qe eed 53 Digital I O Fe t res 2 4420 rer mda s pep een aaa aa di 54 Disitallinputlines it E titu L td 54 Digital Output Lines coi eee ee eee eere e eee De a 54 Channel to Channel Isolation 0 00 cece cect teen eee 55 Resolution A ERS
5. 1 information 2 3 CD 4 Chapter 2 5 6 Search the DT Knowledgebase in the Support section of the Data Translation web site at www datatranslation com for an answer to your problem If you still experience problems try using the information in Table 21 to isolate and solve the problem If you cannot identify the problem refer to page 76 Table 21 Troubleshooting Problems Symptom Possible Cause Possible Solution Module is not recognized You plugged the module into your computer before installing the device driver From the Control Panel System Hardware Device Manager uninstall any unknown devices showing a yellow question mark Then run the setup program on your OMNI CD to install the USB device drivers and reconnect your USB module to the computer Module does not respond The module configuration is incorrect Check the configuration of your device driver The module is damaged Contact Data Translation for technical support refer to page 78 Intermittent operation Loose connections or vibrations exist Check your wiring and tighten any loose connections or cushion vibration sources The module is overheating Check environmental and ambient temperature consult the module s specifications on page 89 of this manual and the documentation provided by your computer manufacturer for more information Electrical noise exists C
6. Note The DT9824 module is a low power device using less than 500 mA therefore it does not require an external power supply Connecting Directly to the Host Computer Generally host computers have two or more USB ports These ports are completely independent To connect a DT9824 module directly to a USB port of the computer do the following 1 Attach one end of the EP365 cable which is shipped with the DT9824 module to the USB port on the module 2 Attach the other end of the EP365 cable to one of the USB ports on the host computer as shown in Figure 3 The operating system automatically detects the USB device and starts the Found New Hardware wizard USB Ports at o DT9824 Host Computer Modules y EP365 Cables Figure 3 Attaching the DT9824 Module Directly to the Host Computer 3 Eor Windows Vista a Click Locate and install driver software recommended The popup message Windows needs your permission to continue appears b Click Continue The Windows Security dialog box appears c Click Install this driver software anyway 24 Installing the Module For Windows XP a Click Next and or Finish as required in the wizard Once the firmware is loaded the wizard restarts to initiate the firmware to accept commands b Click Next and or Finish again Note Windows 7 finds the device automatically 4 Repeat these steps to attach another DT9824
7. such as large electric motors power lines solenoids and electric arcs unless the signals are enclosed in a mumetal shield Prevent electrostatic discharge to the I O while the DT9824 module is operational Connect all unused analog input channels to analog ground When first installing the module try wiring the signals as follows Wire a function generator or a known voltage source to analog input channel 1 using the differential configuration Wire a digital input to digital input line 0 Wire a digital output to digital output line 0 Then run the Quick DataAcq application described in Chapter 4 starting on page 37 to verify that the module is operating properly Once you have determined that the module is operating properly wire the signals according to your application s requirements 32 Wiring Signals Connecting Analog Input Signals You can connect analog input signals to the DT9824 module in the differential configuration only Figure 7 shows the numbering of the screw terminal blocks for analog input connections D OD CD D 4 3 2 1 GND No Connect Figure 7 Screw Terminal Block Numbering for Analog Input Connections Figure 8 shows how to connect voltage inputs to the DT9824 Analog Input Channel N m m M E Rise Shield Vin Vin Pin 2 is no connect Figure 8 Connecting Voltage Inputs No
8. Edge Type SupportsGateRising Interrupt Driven Operations Supportsinterrupt 66 Supported Device Driver Capabilities Tachometers Table 19 Tachometer Options DT9824 A D D A DIN DOUT C T TACH QUAD Tachometer Falling Edges SupportsFallingEdge Tachometer Rising Edges SupportsRisingEdge Tachometer Stale Data Flag SupportsStaleDataFlag 67 Chapter 6 68 review E Using the Auto Calibration Procedure Using the Manual Calibration Procedure Calibration 69 Chapter 7 Overview DT9824 modules are calibrated at the factory and should not require calibration for initial use We recommend that you check and if necessary readjust the calibration of the analog input circuitry on the DT9824 modules every six months using the DT9824 Calibration Utility described in this chapter To calibrate the 24 bit A D offset and A D gain circuits on your module you must use a precision voltage standard such as the Krohn Hite Model 523 or equivalent 70 Calibration Using the Auto Calibration Procedure Note Ensure that you let the DT9824 module warm up for a minimum of 1 hour before calibrating it Auto calibration is the easiest to use and is the recommended calibration method To auto calibrate the analog input subsystem do the following 1 From the Automatic Calibration area at the bottom of the window select the
9. Module is powered Blinking amber Module is acquiring data 97 Appendix B 98 A A D sample clock 50 A D subsystem specifications 82 A D trigger 51 accessories 17 administrator privileges 27 analog input features A D sample clock 50 adding a digital input port to the channel list 50 channel list 49 channels 49 conversion modes 51 data format 52 data transfer 53 differential channels 33 error conditions 53 gain 50 input ranges 50 resolution 50 specifications 82 testing continuous operations 41 testing single value operations 40 triggers 51 wiring voltage inputs 33 application wiring digital inputs 35 digital outputs 36 voltage inputs 33 applications Quick DataAcq 16 quickDAQ 16 B base clock frequency 65 BaseClockFrequency 65 binary encoding 52 60 buffers 60 inprocess flush 60 C C C programs 16 cables EP333 34 EP365 24 25 Index calibration 70 CGLDepth 61 channel list for analog input channels 49 for digital input port 50 channel type differential 61 single ended 61 channel gain list depth 61 channels analog input 49 digital I O 54 number of 61 clocks base frequency 65 internal 65 maximum external clock divider 65 maximum throughput 65 minimum external clock divider 65 minimum throughput 65 connecting signals digital inputs 35 digital outputs 36 voltage inputs 33 connecting to the host computer directly 24 using a self powered USB hub 25 connector J1 pin assign
10. Range Options DT9824 Number of Voltage Ranges NumberOfRanges A D D A DIN DOUT C T TACH QUAD Available Ranges SupportedVoltageRanges 10V Current Output Support SupportsCurrentOutput Resolution 62 Table 11 DT9824 Resolution Options DT9824 Software Programmable Resolution SupportsSoftwareResolution A D D A DIN DOUT C T TACH QUAD Number of Resolutions NumberOfResolutions Available Resolutions SupportedResolutions 24 8 8 Supported Device Driver Capabilities Thermocouple and RTD Support Table 12 Thermocouple and RTD Support Options DT9824 A D D A DIN DOUT C T TACH QUAD Thermocouple Support SupportsThermocouple RTD Support SupportsRTD Resistance Support ReturnsOhms Voltage Converted to Temperature in Hardware SupportsTemperatureDatalnStream Supported Thermocouple Types ThermocoupleType Supported RTD Types RTDType Supports CJC Source Internally in Hardware SupportsCjcSourcelnternal Supports CJC Channel SupportsCjcSourceChannel Available CJC Channels CjcChannel Supports Interleaved CJC Values in Data Stream SupportsInterleavedCjcTemperaturesInStream Supports Programmable Filters SupportsTemperatureFilters Programmable Filter Types TemperatureFilterType IEPE Support Table 13 IEPE Support Op
11. This equipment has been tested and found to comply with CISPR EN55022 Class A and EN61000 6 1 requirements and also with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Changes or modifications to this equipment not expressly approved by Data Translation could void your authority to operate the equipment under Part 15 of the FCC Rules Note This product was verified to meet FCC requirements under test conditions that included use of shielded cables and connectors between system components It is important that you use shielded cables and connectors to reduce the possibility of causing interference to radio television and other electronic devices Canadian Department of Communications Statement This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications
12. a Scene AR RN 64 ica Sfr por E 65 o rm 65 Conner TIniB S os loue b ette tp rx ee e dise t bae sud 66 O 67 57 Chapter 6 The DT9824 Device Driver provides support for the analog input A D digital input DIN and digital output DOUT subsystems For information on how to configure the device driver refer to page 27 Table 3 DT9824 Subsystems I NEN BEIDE Total Subsystems on Module The tables in this chapter summarize the features available for use with the DT Open Layers for NET Class Library and the DT9824 module The DT Open Layers for NET Class Library provides properties that return support information for specified subsystem capabilities The first row in each table lists the subsystem types The first column in each table lists all possible subsystem capabilities A description of each capability is followed by the property used to describe that capability in the DT Open Layers for NET Class Library Note The following tables include the capabilities that can be queried However some capabilities may not be supported by your device Blank fields represent unsupported options For more information refer to the description of these properties in the DT Open Layers for NET Class Library online help or DT Open Layers for NET Class Library User s Manual 58 Supported Device Driver Capabilities Data Flow and Operation Options Table 4 Data Flow and Operation Options DT9824 Sin
13. port to accommodate the eight isolated digital input lines and a resolution of eight bits for the digital output port to accommodate the eight isolated digital output lines These lines are organized as isolated dedicated ports You cannot configure port resolution through software Operation Modes The following digital I O operation modes are supported for the DT9824 module Single value operations are the simplest to use but offer the least flexibility and efficiency You use software to specify the digital input or output port the gain is ignored Data is then read from or written to the corresponding digital I O lines Continuous digital input takes full advantage of the capabilities of the DT9824 module using the analog input clock source conversion mode and buffer The analog input sample clock then paces acquisition of the analog input channels as well as the digital input port refer to page 50 for more information about specifying the digital input port in the analog input channel gain list 55 Chapter 5 56 A D Supported Device Driver Capabilities Data Plow and Operation Pie een ae a 59 Prog E MT E 60 Tree or pr PEE 60 INO soeben t Bretton TEN E beta de nif at tut diss pde ae 61 S T 61 on UTER 62 pi e eu eed ubere oer a nee bs RUE test eis 62 Thermocouple and KIO SUDDOEL rasen ahnen 63 aa 3 ee ee re Mi ties 63 obra oap UPA A A voe Boe Pace eaeque 64 TRS nits
14. 0 returning modules to the factory 79 RMA 79 running the Quick DataAcq application 39 S scan 52 screw terminal assignments 33 screw terminal panel 17 34 SDK 16 service and support procedure 78 simultaneous start list 59 single channel analog input 49 single ended channels 61 single value operations 59 analog input 51 digital I O 55 size module 89 software supported 16 software trigger 51 64 solid state relays controlling 36 sourcing 36 specifications 81 analog input 82 digital I O 88 environmental 89 91 physical 89 91 power 89 91 regulatory 90 stopping an operation 51 STP37 screw terminal panel 17 34 subsystem descriptions A D 49 digital I O 54 SupportedGains 61 SupportedResolutions 62 SupportedVoltageRanges 62 SupportsBinaryEncoding 60 SupportsBuffering 60 SupportsContinuous 59 SupportsDifferential 61 SupportsInProcessFlush 60 SupportsInternalClock 65 SupportsNegExternalTTL Trigger 64 SupportsPosExternalTTL Trigger 64 SupportsProgrammableGain 61 101 Index 102 SupportsSimultaneousStart 59 Visual C 16 SupportsSingleEnded 61 Visual C 16 SupportsSingleValue 59 SupportsSoftwareTrigger 64 T technical support 78 throughput maximum 65 minimum 65 transferring data 53 triggered scan number of scans per trigger 60 retrigger frequency 60 triggers 51 external 51 external negative digital 64 external positive digital 64 software 51 64 troubleshooting procedure 76 service and suppo
15. 0 0 nenni cee meme 39 Testing omple yalue T opa a na en ad 40 Testing Continous Analog Inpiit seeded ern antes 41 Testing Continuous Analog Input i se est e pt e Eee RE REC Rd 41 Testing Single Die tal TPE an nee a ea a Raine a 42 Testing omete Value Dis tal ul en a nn 43 37 Chapter 4 Install the Module and Configure the Device Driver see Chapter 2 starting on page 21 Wire Signals see Chapter 3 starting on page 29 C Verify the Operation of the Module i this chapter D You can verify the operation of a DT9824 module using the Quick DataAcq application The Quick DataAcq application allows you to do the following Acquire data from a single analog input channel or digital input port Acquire data continuously from one or more analog input channels using an oscilloscope strip chart or Fast Fourier Transform FFT view Output data from a single digital output port Savethe input data to disk This chapter describes how to install and run the Quick DataAcq application 38 Verifying the Operation of the Module Running the Quick DataAcq Application The Quick DataAcq application is installed automatically when you install the driver software To run the Quick DataAcq application do the following 1 If you have not already done so power up your computer and any attached peripherals 2 Click Start from the Task Bar 3 Browse to Programs Data Translation Incl D
16. 1 Features The DT9824 shown in Figure 1 is a high resolution 24 bit data acquisition module for the Universal Serial Bus USB Ultra High Resolution DT9824 Precision Instrumentation Input ISO Channel USB Data Acquisition Module Ain Ch1 Ain Ch2 Armed amp Triggered amp DATA TRANSLATION Figure 1 DT9824 Module Most computers have two or more USB ports that allow direct connection to USB devices You can expand the number of USB devices attached to a single USB port by using expansion hubs The DT9824 module is part of the high power bus powered USB class therefore the module does not require external power but the expansion hubs do require external power The DT9824 module resides outside of the PC and install with a single cable to ease installation Modules can be hot swapped or plugged and unplugged while the PC is on making them useful for many data acquisition applications The DT9824 module provides the following major features USB compatibility s JSO Channel protection eliminates noise and ground loops 500 V galvanic isolation channel to channel for all analog input signals and to the host computer to protect signal integrity e Four simultaneous 24 bit analog input channels Sampling frequency of up to 4800 Hz Input gains of 1 8 16 and 32 with an input range of 10 V to support the following effective ranges 10 V 1 25 V 0 625 V and 0 3125 V Continuously p
17. 200 the chopper is disabled for the A D converter at frequencies greater than 960 Hz 3 Adjust the offset for the selected channel as follows a Select the gain to apply to the channel 1 8 16 or 32 b Tocalibrate to 0 V connect a dead short wire to the selected channel The actual voltage is continuously returned in the AD Voltage text box Since this number is constantly changing a Running Average value is also displayed c If desired click the Reset button under the Running Average edit box to reset the running average d Once the Running Average value has settled adjust the offset by entering values in the Offset edit box or by clicking the up down buttons until the Running Average value matches 0 V e Repeat steps 3a to 3d selecting the next gain in the list until the offset values are calibrated for each gain setting 4 Adjust the gain for the selected channel as follows a Select the gain to apply to the channel 1 8 16 or 32 b Apply the appropriate voltage shown in Table 20 for the selected gain Table 20 Voltages for Calibrating the Gain Gain Voltage to Apply 1 9 60000 V 8 1 20000 V 16 0 60000 V 32 0 30000V c Ifdesired click the Reset button under the Running Average edit box to reset the Running Average value 72 Calibration d Once the Running Average value has settled adjust the gain by entering values in the Gain edit box or by clicking the up dow
18. Basic NET this manual describes how to use the DT Open Layers for NET Class Library to access the capabilities of Data Translation data acquisition devices DataAcq SDK User s Manual UM 18326 For programmers who are developing their own application programs using the Microsoft C compiler this manual describes how to use the DT Open Layers DataAcq SDK to access the capabilities of Data Translation data acquisition devices DTx EZ Getting Started Manual UM 15428 This manual describes how to use the ActiveX controls provided in DTx EZ to access the capabilities of Data Translation data acquisition devices in Microsoft Visual Basic or Visual C LV Link Online Help This help file describes how to use LV Link with the LabVIEW graphical programming language to access the capabilities of Data Translation data acquisition devices About this Manual Where To Get Help Should you run into problems installing or using a DT9824 module the Data Translation Technical Support Department is available to provide technical assistance Refer to Chapter 8 starting on page 75 for more information If you are outside the United States or Canada call your local distributor whose number is listed on Data Translation s web site www datatranslation com 11 About this Manual 12 Overview l Dem 14 supported BofBWalB une Re Dre tr tere Rer Op REDE EEANN EE REA cian 16 18 Getting Started Procedure 13 Chapter
19. DATA TRANSLATION UM 23782 G DT9824 User s Manual Seventh Edition August 2012 Data Translation Inc 100 Locke Drive Marlboro MA 01752 1192 508 481 3700 www datatranslation com Fax 508 481 8620 E mail info datx com Copyright O 2010 2012 by Data Translation Inc All rights reserved Information furnished by Data Translation Inc is believed to be accurate and reliable however no responsibility is assumed by Data Translation Inc for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent rights of Data Translation Inc Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer software clause at 48 C ER 252 227 7013 or in subparagraph c 2 of the Commercial Computer Software Registered Rights clause at 48 C F R 52 227 19 as applicable Data Translation Inc 100 Locke Drive Marlboro MA 01752 Data Translation is a registered trademark of Data Translation Inc ISO Channel DT Open Layers DT Open Layers for NET Class Library DataAcq SDK LV Link and DTx EZ are trademarks of Data Translation Inc All other brand and product names are trademarks or registered trademarks of their respective companies Radio and Television Interference
20. Department is available to provide technical assistance To request technical support to go our web site at http www datatranslation com and click on the Support link When requesting technical support be prepared to provide the following information Your product serial number The hardware software product you need help on The version of the OMNI CD you are using Your contract number if applicable If you are located outside the USA contact your local distributor see our web site www datatranslation com for the name and telephone number of your nearest distributor Troubleshooting If Your Module Needs Factory Service If your module must be returned to Data Translation do the following 1 Record the module s serial number and then contact the Customer Service Department at 508 481 3700 ext 1323 if you are in the USA and obtain a Return Material Authorization RMA If you are located outside the USA call your local distributor for authorization and shipping instructions see our web site www datatranslation com for the name and telephone number of you nearest distributor All return shipments to Data Translation must be marked with the correct RMA number to ensure proper processing 2 Using the original packing materials if available package the module as follows Wrap the module in an electrically conductive plastic material Handle with ground protection A static discharge can destroy compon
21. Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la class A prescrites dans le R glement sur le brouillage radio lectrique dict par le Minist re des Communications du Canada Table of Contents About this Manual ooococcoocconcnoc ehh nnn 9 Intended Audience ceder pe beber ERE da ee b ese ER ee 9 How this Manual is Organized 9 Conventions Used in this Manual 10 Related Information 2I E R T ARE R AE eE A Lehen oe Te ones 10 Where Lo Get Help a eee E rs A AH 11 Chapter 1 Overview o oooocccoconn RR Rh hh nnn 13 E atutes e A OR EC RE E ue e Rug date NA 14 Supported Software o dee EIER Eee 16 Accessalles Ls eR dai EH HRS A AAA lA ASA 17 Getting Started Procedure 0 6 nn een ees 18 Part 1 Getting Started cts wie ii 19 Chapter 2 Installing the Module sex xe x e x e x cece eee eee eee eee 21 Unpacking 42 220 ete RECTE hee Ue odin A ou ite x eben 23 Attaching Modules to the Computer 06 6 rr 24 Connecting Directly to the Host Computer lt 0000000 e eee eee 24 Connecting to a Self Powered USB Hub 000 0 25 Configuring the Driver isses sees totes ae ed setae ease seg eats 27 Chapter 3 Wiring Signals ex e x e x x ccc 29 Preparing to Wire Signals 31 Connecting Analog Input Signals eh 33 Connecting Digital I O Signals ssssssses eh 34 Connecting Digital Input Signals
22. Operations SupportsSvPosExternalTTLTrigger External Negative TTL Trigger Support for Single Value Operations SupportsSvNegExternalTTLTrigger Positive Threshold Trigger Support SupportsPosThresholdTrigger Negative Threshold Trigger Support SupportsNegThresholdTrigger Digital Event Trigger Support SupportsDigitalEventTrigger Supported Device Driver Capabilities Reference Triggers Table 16 Reference Trigger Options DT9824 External Positive TTL Trigger Support SupportsPosExternalTTLTrigger A D D A DIN DOUT C T TACH QUAD External Negative TTL Trigger Support SupportsNegExternalTTLTrigger Positive Threshold Trigger Support SupportsPosThresholdTrigger Negative Threshold Trigger Support SupportsNegThresholdTrigger Digital Event Trigger Support SupportsDigitalEventTrigger Sync Bus Support SupportsSyncBusTrigger Analog Input Channels Supported for the Threshold Trigger SupportedThresholdTriggerChannels Post Trigger Scan Count Support SupportsPostTriggerScanCount Clocks Table 17 Clock Options DT9824 Internal Clock Support SupportsInternalClock External Clock Support SupportsExternalClock A D D A DIN Yes DOUT C T TACH QUAD SupportsSimultaneousClocking Simultaneous Input Output on a Single Clock Signal Base Clock Frequency BaseClockFrequency 4800 Hz 0 M
23. T Open Layers for Win32 QuickDataAcq The main menu appears Note The Quick DataAcq application allows you to verify basic operations on the board however it may not support all of the board s features For information on each of the features provided use the online help for the Quick DataAcq application by pressing F1 from any view or selecting the Help menu If the system has trouble finding the help file navigate to C Program Files Data Translation Win32 dtdataacq hlp where C is the letter of your hard disk drive 39 Chapter 4 40 Testing Single Value Analog Input To verify that the module can read a single analog input value do the following 1 Connect a voltage source such as a function generator to analog input channel 1 differential mode on the DT9824 module Refer to page 33 for information on connecting analog input signals In the Quick DataAcq application choose Single Analog Input from the Acquisition menu Select the appropriate DT9824 module from the Board list box Note Once you select the module the LED on the module turns green In the Channel list box select an index of 0 to select analog input channel 1 In the Range list box select the range for the channel The default is x10 V Select Differential Click Get to acquire a single value from analog input channel 1 The application displays the value on the screen in both text and graphical form Verifying the Op
24. T re Er DE oak idan ee A 55 Operation Modessa ni nenn reete e e eet bae ed eee are eus 55 Chapter 6 Supported Device Driver CapabilitieS 57 Data Flow and Operation Options 22ceeeeeeeeeeeeeeeeeeeenee essen 59 Butter N N pe LUE 60 Triggered Scan Mode un esse ee reet Sad eeu A 60 Data Encoding isses Ru ee E RU Ue epe qu s Uv aa a nai 60 Channels oes ets ML EL e Ste so ded d etd e ee d V Sea 61 CMA AR SRE e NUR ER EEG 61 Ranges una deae Pbi RS RE bd a nn aan sata ue a 62 Resolution s es sex ee ee eee es eite ee ete e S te oth isis 62 Thermocouple and RTD Support e nenne nennen 63 TEPE Suppott voee cack eee CRX era nee in elie P ead 63 Stran Gase SUP POLE he ee ido CE dde siad A bts 64 Triggers veis PS eee at 64 Reference Triggers raus kamen i ed n REARS Read ek dade Ro ae ea e 65 Lae lere ran a een EO duct e E RS is 65 Counter Liniers vlov en a OP Ye en e etd ete es 66 Tach melters ma rs M ARRAS LR RUE re eg bedi ES 67 Contents Chapter 7 Calibrati0N oooooooconcornann I IRI II mh 69 OVerVie Wd ses das taken ee a dd uud db ERES 70 Using the Auto Calibration Procedure 71 Using the Manual Calibration Procedure s 72 Chapter 8 Troubleshooting cece eee eee eee 75 General Checklist trea bbyanleeseibietadbedadeegalesdlitacscsbedad both os 76 Technical SUP POLE er oe ades hte adeste tet dos 78 If Your Module Needs Factory Service 1 6 t
25. a unique color on the oscilloscope view Note When the module is performing a continuous Scope or FFT operation the LED on the module turns green the resulting color may appear yellow Click Stop from the Toolbar to stop the operation 41 Chapter 4 42 Testing Single Value Digital Input To verify that the module can read a single digital input value do the following 1 Connect a digital input to digital input line 0 of port A on the DT9824 module Refer to page 35 for more information on connecting digital inputs In the Quick DataAcq application choose Digital Input from the Acquisition menu Select the appropriate DT9824 module from the Board list box Note Once you select the module the LED on the module turns green Select digital input port A by clicking Port A Click Get The application displays the value of each digital input line in port A on the screen in both text and graphical form Verifying the Operation of the Module Testing Single Value Digital Output To verify that the module can output a single digital output value perform the following steps 1 Connect a digital output to digital output line 0 of port B on the DT9824 module Refer to page 36 for more information on connecting digital outputs 2 In the Quick DataAcq application choose Digital Output from the Control menu 3 Select the appropriate DT9824 module from the Board list box Note Once you selec
26. aced analog input operations Software programmable trigger type software or external digital trigger to start analog input operations 14 Overview 8 opto isolated digital input lines 8 opto isolated digital output lines the outputs are solid state relays that operate from x30 V at currents up to 400 mA peak AC or DC Digital I O galvanically isolated to 250 V when using all digital input lines You can read the digital input port through the analog input data stream for correlating analog and digital measurements 15 Chapter 1 16 Supported Software The following software is available for use with the DT9824 module DT9824 Device Driver This software is provided on the Data Acquisition OMNI CD that is shipped with the module The device driver allows you to use a DT9824 module with any of the supported software packages or utilities DT9824 Calibration Utility This software is provided on the Data Acquisition OMNI CD ROM The DT9824 Calibration Utility allows you to calibrate the analog input circuitry of the DT9824 module Refer to Chapter 7 starting on page 69 for more information on this utility Quick DataAcq application This software is provided on the Data Acquisition OMNI CD that is shipped with the module The Quick DataAcq application provides a quick way to get up and running using a DT9824 module Using this application you can verify key features of the module display data on the screen an
27. alog input 50 number of 61 programmable 61 H help 75 help online 39 high drive digital outputs 36 hot swapping 25 26 j inprocess buffers 60 input configuration 33 input FIFO 51 FIFO input 59 input ranges 50 internal clock 65 J J1 connector pin assignments 97 L LabVIEW 16 LED status indicator 97 legacy CPL elevated 27 LV Link 16 M MATLAB 16 MaxDifferentialChannels 61 MaxExtClockDivider 65 MaxFrequency 65 MaxMultiScanCount 60 MaxRetriggerFreq 60 MaxSingleEndedChannels 61 mechanical relays controlling 36 MinExtClockDivider 65 MinFrequency 65 MinRetriggerFreq 60 Index module specifications 89 91 multiple channels analog input 49 N no wrap mode 52 number of differential channels 61 gains 61 I O channels 61 resolutions 62 scans per trigger 60 single ended channels 61 voltage ranges 62 NumberOfChannels 61 NumberOfRanges 62 NumberOfResolutions 62 NumberOfSupportedGains 61 O offset binary encoding 52 60 online help 39 Open Layers Control panel 27 operation modes continuous digital input 55 single value analog input 51 single value digital I O 55 orderly stop 51 P physical specifications 89 91 pin assignments 97 power specifications 89 91 Q Quick DataAcq 16 running 39 quickDAQ application 16 R rack mount kits EP379 17 EP380 17 ranges analog input 50 number of 62 resolution 55 analog input 50 available 62 number of 62 retrigger clock frequency 6
28. aximum Clock Divider MaxExtClockDivider 1 0 Minimum Clock Divider MinExtClockDivider 1 0 Maximum Frequency MaxFrequency 4800 Hz 0 Minimum Frequency MinFrequency 4 7 Hz 0 65 Chapter 6 Counter Timers Table 18 Counter Timer Options DT9824 A D D A DIN DOUT C T TACH QUAD Cascading Support SupportsCascading Event Count Mode Support SupportsCount Generate Rate Mode Support SupportsRateGenerate One Shot Mode Support SupportsOneShot Repetitive One Shot Mode Support SupportsOneShotRepeat Up Down Counting Mode Support SupportsUpDown Edge to Edge Measurement Mode Support SupportsMeasure Continuous Edge to Edge Measurement Mode Support SupportsContinuousMeasure High to Low Output Pulse Support SupportsHighToLowPulse Low to High Output Pulse Support SupportsLowToHighPulse Variable Pulse Width Support SupportsVariablePulseWidth None internal Gate Type Support SupportsGateNone High Level Gate Type Support SupportsGateHighLevel Low Level Gate Type Support SupportsGateLowLevel High Edge Gate Type Support SupportsGateHighEdge Low Edge Gate Type Support SupportsGateLowEdge Level Change Gate Type Support SupportsGateLevel Clock Falling Edge Type SupportsClockFalling Clock Rising Edge Type SupportsClockRising Gate Falling Edge Type SupportsGateFalling Gate Rising
29. ber of ports 2 4 bit 1 In 1 Out Inputs Input type High input voltage Low input voltage High input current Low input current DC 3 to 428 V lt 1 5V 2 2 kQ resistor to 1 2 V 2 2 kQ resistor to 1 2 V Termination Series 2 2 kQ Outputs Output type Solid state relay Output driver CMOS High output 30V Low output 0 4 V 400 mA Breakdown voltage 60 V Contact impedance 10 Isolation voltage To computer ground 500 V Channel to channel 250 V a Determined by the pin spacing in the 37 pin digital connector For greater channel to channel isolation use every other digital I O line using every other digital I O line allows 500 V isolation channel to channel Specifications Power Physical and Environmental Specifications Table 27 lists the power physical and environmental specifications for the DT9824 module Table 27 Power Physical and Environmental Specifications Feature DT9824 Specifications Power 5 V Standby 500 uA maximum 5 V Enumeration 100 mA maximum 75 mA typical 5 V Power ON 500 mA maximum 420 mA typical Power Consumption 425 mA current draw Physical Dimensions Width 8 380 inches 212 85 mm Length 9 319 inches 236 7 mm Height 1 720 inches 43 69 mm Weight 31 ounces 880 g Environmental Operating temperature range 0 C to 55 C Storage temperature range 25 C to 85 C Relative humidity To 95 noncondensing
30. channel to calibrate from the Type of Calibration drop down list box 2 Click the Start button The utility prompts you to connect 0 V to the channel to calibrate the offset at different gain settings and at different frequencies When calibrating 0 V it is preferred that you connect a dead short wire to the channel rather than supplying 0 V through the voltage source 3 Ensure that you supply the correct voltage to the selected channel and then click OK The utility prompts you to connect various voltages to the channel to calibrate the gain at different gain settings and at different frequencies 4 Repeat steps 2 to 4 for the remaining A D channels on the module following the on screen prompts Note Atany time you can click Restore Factory Settings to reset the A D calibration values to their original factory settings This process will undo any auto or manual calibration settings 71 Chapter 7 Using the Manual Calibration Procedure Note Ensure that you let the DT9824 module warm up for a minimum of 1 hour before calibrating it If you want to manually calibrate the analog input circuitry instead of auto calibrating it perform the following steps 1 Select the A D channel to calibrate at the top of the window 2 Select the frequency to use for the calibration 100 or 1200 If you select 100 the chopper is enabled for the A D converter at frequencies equal to or lower than 960 Hz If you select 1
31. d save data to disk The quickDAQ application An evaluation version of this NET application is included on the Data Acquisition OMNI CD quickDAQ lets you acquire analog data from all devices supported by DT Open Layers for NET software at high speed plot it during acquisition analyze it and or save it to disk for later analysis DT Open Layers for NET Class Library Use this class library if you want to use Visual C or Visual Basic for NET to develop your own application software for a DT9824 module using Visual Studio 2003 or Visual Studio 2005 the class library complies with the DT Open Layers standard DataAcq SDK Use the Data Acq SDK if you want to use Visual Studio 6 0 and Microsoft C or C to develop your own application software for a DT9824 module using Windows XP Windows Vista or Windows 7 the DataAcq SDK complies with the DT Open Layers standard DTx EZ Use this optional software package if you want to use ActiveX controls to access the capabilities of the DT9824 module using Microsoft Visual Basic or Visual C DTx EZ complies with the DT Open Layers standard DAQ Adaptor for MATLAB Data Translations DAQ Adaptor provides an interface between the MATLAB Data Acquisition DAQ subsystem from The MathWorks and Data Translation s DT Open Layers architecture LV Link LV Link is included on the Data Acquisition OMNI CD Use this optional software package if you want to use the LabVIEW graphical programming lan
32. e Windows needs your permission to continue appears b Click Continue The Windows Security dialog box appears c Click Install this driver software anyway 25 Chapter 2 For Windows XP a Click Next and or Finish as required in the wizard Once the firmware is loaded the wizard restarts to initiate the firmware to accept commands b Click Next and or Finish again Note Windows 7 finds the device automatically 5 Repeat these steps until you have attached the number of hubs and modules that you desire Refer to Figure 4 The operating system automatically detects the USB devices as they are installed DT9824 Module DT9824 Module EP365 Cables EP365 Cable H gt x3 EP365 Cable as P Em Power uM 2 Self Powere Host Computer for Hub USB Hubs DT9824 Module DT9824 Module EP365 Cables Figure 4 Attaching DT9824 Modules to the Host Computer Using Self Powered USB Hubs Note You can unplug a module and then plug it in again if you wish without causing damage This process is called hot swapping Your application may take a few seconds to recognize a module once it is plugged back in 26 Installing the Module Configuring the Driver Note In Windows 7 and Vista you must have administrator privileges to run the Open Layers Control Panel When you double click the Open Layers Control Pan
33. e index 0 to 3 of the analog input channels that you want to sample Refer to page 51 for more information about the supported conversion modes 49 Chapter 5 Specifying the Digital Input Port in the Analog Input Channel List Using the DT9824 module you can also read the digital input port all 8 digital input lines in the analog input stream by specifying a channel index of 4 the channel gain list This feature is particularly useful when you want to correlate the timing of analog and digital events You can enter channel 4 anywhere in the channel gain list The digital input port is treated like any other channel in the analog input channel list therefore all the clocking triggering and conversion modes supported for analog input channels are supported for the digital input port if you specify them this way Input Resolution The analog input resolution of the DT9824 module is fixed at 24 bits Input Ranges and Gains The DT9824 module supports an input range of 10 V In addition you can choose from up to 4 gains 1 8 16 or 32 Table 2 lists the supported gains and effective input range of each input range on the DT9824 module Table 2 Effective Input Ranges Gain Input Range 1 10 V 8 1 25 V 16 0 625 V 32 0 3125 V Choose the gain that has the smallest effective range that includes the signal you want to measure For example if the range of your analog input signal is 1 05 V speci
34. eatures eight isolated digital input lines Digital inputs operate from 3 to 28 V DC with a switching time of 2 ms maximum Figure 15 shows the digital input circuitry a 2 2 kQ resistor is used in series with the LED in the opto isolator input 2 2K Digital Input Figure 15 Digital Input Circuitry A digital line is high switch is closed if its value is 1 a digital line is low switch is open if its value is 0 Digital Output Lines The DT9824 module features eight latched and isolated digital output lines The outputs are solid state relays that operate at 30 V and 400 mA peak AC or DC Switching time is 2 ms maximum Figure 16 shows the digital output circuitry 54 Principles of Operation Figure 16 Digital Output Circuitry Digital outputs resemble a switch the switch is closed if the state of the digital output line is 1 and the switch is open if the state of the digital output line is 0 On power up or reset the digital outputs are open Channel to Channel Isolation The DT9824 module includes channel to channel isolation of up to 250 V between digital I O lines If you require greater channel to channel isolation use every other digital line This reduces the number of digital I O lines but provides channel to channel isolation of 500 V one channel can be 250 V while the adjacent channel can be 250 V Resolution The DT9824 module provides a resolution of eight bits for the digital input
35. el icon you may see the Program Compatibility Assistant If you do select Open the control panel using recommended settings You may also see a Windows message asking you if you want to run the Open Layers Control Panel as a legacy CPL elevated If you get this message click Yes If you do not get this message and have trouble making changes in the Open Layers Control Panel right click the DTOLCPL CPL file and select Run as administrator By default this file is installed in the following location Windows 7 and Vista 32 bit C Windows System32 Dtolcpl cpl Windows 7 and Vista 64 bit C Windows SysWOW64 Dtolcpl cpl To configure the DT9824 device driver do the following 1 If you have not already done so power up the host computer and all peripherals 2 From the Control Panel double click the Open Layers Data Acquisition Control Panel icon The Open Layers dialog box appears 3 If you want to rename the module click Edit Name otherwise go to step 5 4 Enter a new name for the module and then click OK Note This name is used to identify the module in all subsequent applications 5 When you are finished configuring the module click Close 6 Close the Control Panel 27 Chapter 2 28 Preparing to Wire Signals Connecting Analog Input Signals aa RA seen eme e T H Connecting Digital I O Signals Wiring Signals 29 Chapter 3 Install the Module see Chapter 2
36. enes 79 Appendix A Specifications ss e x e e x e x e x eee eee 81 Analog Input Specifications sisse nnn 82 lor pM Se con na RR ee E 84 Frequency Response and Input Bandwidth 85 Digital I O Specifications ur mdi ee Rc a ae a a es 88 Power Physical and Environmental Specifications s s esses 89 Regulatory Specifications ooooocococcccccrorcccr nn 90 Connector Specifications 22 used e du t UE Tk ES RAE TOO ER OO DIN ES 91 Appendix B Connector Pin Assignments and LED Status Indicators 93 Analog Input Screw Terminals e e eh 94 Digital I O Connector cine ce eet e tete te teo e e ete te re e ete n 95 USB COnnectOF rates ana Ba end eee ae ei rl Ae 96 LED Status Indicators ai K 12 a E 97 Midex ii en 3 Seeds ee bse a tet Gi deeb big lie 99 Contents About this Manual This manual describes how to install and set up your DT9824 module and device driver and verify that your module is working properly This manual also describes the features of the DT9824 module the capabilities of the device driver and how to program the DT9824 module using the DT Open Layers for NET Class Library software Troubleshooting and calibration information is also provided Note For information on checking system requirements installing the software and viewing the documentation refer to the README file on the OMNI CD For more information on the class library refer to the DT Open Layer
37. ents on the board Place in a secure shipping container 3 Return the board to the following address making sure the RMA number is visible on the outside of the box Customer Service Dept Data Translation Inc 100 Locke Drive Marlboro MA 01752 1192 79 Chapter 8 80 m Specifications Analog Input Spec ALOE cs eese ne ee eim d aan e n s ee mac ale 82 Digital H OCU Ca OS Lecce eek EI eI GbR HEROS P UR IH de P ete e ed 88 Power Physical and Environmental SpecificatiONS oooooooocommmmmmmmo roo 89 Remulatorr SPEAR aeg ees 90 Connector APEC DOS is hene ERRARE LE HEP a Pera peri HEE 91 81 Appendix A Analog Input Specifications Table 22 lists the specifications for the A D subsystem on the DT9824 module Table 22 A D Subsystem Specifications Feature DT9824 Specifications Number of analog inputs 4 Differential Number of gains 4 1 8 16 32 Resolution 24 bits Data encoding Offset binary Coupling DC Sample frequency per channel 4 7 Hz to 4800 Hz System accuracy 10 Hz full scale 10 V Gain 1 0 001 Gain 8 0 002 Gain 16 0 003 Gain 32 0 005 System accuracy 100 Hz full scale 10 V Gain 1 0 001 Gain 8 0 002 Gain 16 0 003 Gain 32 0 006 System accuracy 1200 Hz full scale 10 V Gain 1 0 001 Gain 8 0 002 Gain 16 0 004 Gain 32 0 007 System accuracy 4800 Hz full scale 10 V
38. eration of the Module Testing Continuous Analog Input To verify that the module can perform a continuous analog input operation do the following 1 10 11 Connect known voltage sources such as the outputs of a function generator to analog input channels 1 and 2 on the DT9824 module using the differential configuration Refer to page 33 for more information on connecting analog input signals In the Quick DataAcq application choose Scope from the Acquisition menu Select the appropriate DT9824 module from the Board list box Note Once you select the module the LED on the module turns green In the Sec Div list box select the number of seconds per division 1 to 00001 for the display Click Config from the Toolbar From the Config menu select ChannelType and then select Differential From the Config menu select Range and then select Bipolar The default is Bipolar From the Scope view double click the input range of the channel to change the input range of the module 10 V 1 25 V 0 625 V or 0 3125 V The display changes to reflect the selected range for all the analog input channels on the module In the Trigger box select Auto to acquire data continuously from the specified channels or Manual to acquire a burst of data from the specified channels Click Start from the Toolbar to start the continuous analog input operation The application displays the values acquired from each channel in
39. ex 4 In this example data is acquired simultaneously on all channels on each clock pulse of the input sample clock Data is acquired continuously until all the queued buffers have been filled or you stop the operation Chan 4 Chan 4 Chan 4 Chan 4 Chan 3 Chan 3 Chan 3 Chan 3 Chan 2 Chan 2 Chan 2 Chan 2 Chan 1 Chan 1 Chan 1 Chan 1 Chan 0 Chan 0 Chan 0 Chan 0 Input Sample Clock Data is acquired continuously Initial trigger event occurs Figure 14 Continuous Wrap Mode Data Format The DT9824 module uses offset binary data encoding for the 10 V bipolar range Note When the DT9824 is above range the value FFFFFFh plus full scale is returned When the DT9824 module is below range the value 000000h minus full scale is returned 52 Principles of Operation In software the analog input value is returned as a code To convert the code to voltage use the following formulas LSB FSR 2N Vin Code LSB Offset where LSB is the least significant bit e FSR is the full scale range For the DT9824 the full scale range is 20 Nisthe input resolution 24 bits e Vin is the analog voltage e Code is the raw count used by the software to represent the voltage e Offset is the actual minus full scale value The minus full scale value is 10 V For example if the software returns a code of 2010 for the analog input operation determine the analog input voltage as fo
40. finishes acquiring the data stops all subsequent acquisition and transfers the acquired data to host memory all subsequent triggers are ignored In an abrupt stop the module stops acquiring samples immediately the acquired data is not transferred to host memory and all subsequent triggers or retriggers are ignored The conversion rate is determined by the frequency of the A D sample clock refer to page 50 for more information on the A D sample clock DT9824 modules use an 8 kSample input FIFO for storing data from each of up to 5 enabled input channels analog input indices 0 to 3 and the digital input port index 4 51 Chapter 5 One sample from each of the enabled input channels is called a scan In software you specify the number of scans that you want to acquire in the input buffer You can specify one of the following wrap modes for the input buffer in software Continuous wrap mode Use this mode if you want the input operation to continue indefinitely In this case when the end of the input buffer is reached the operation wraps to the beginning of the input buffer overwriting the oldest scan data with the latest scan data No wrap mode Use this mode if you want the input operation to stop automatically when the number of scans specified has been acquired Figure 14 illustrates continuous wrap mode using a channel list with five entries analog input channel indices 0 1 2 3 and the digital input data ind
41. fy a range of 10 V for the A D subsystem and use a gain of 8 for the channel the effective input range for this channel is then 1 25 V which provides the best sampling accuracy for that channel You can either specify the gain as part of the single value operation If you want to clock A D conversions specify the gain for the channel entry in the channel gain list A D Sample Clock The DT9824 module provides an internal A D sample clock with a minimum sampling frequency of 4 7 Hz and a maximum sampling frequency of 4800 Hz All channels that are specified in the channel gain list are sampled simultaneously at the specified sampling frequency 50 Principles of Operation As a guideline the sampling frequency of the DT9824 should be a least 2 5 times the highest input signal frequency that you are trying to measure For example to accurately sample a 400 Hz signal it is recommended that you specify a sampling frequency of at least 1000 Hz The actual frequency that the module can achieve may be slightly different than the frequency you specified due to the accuracy of the clock You can determine the actual clock frequency using software Triggers A trigger is an event that occurs based on a specified set of conditions The DT9824 module supports the following trigger sources Software trigger A software trigger event occurs when you start the analog input operation the computer issues a write to the module to begin con
42. gle Value Operation Support SupportsSingleValue A D Yes D A DIN Yes DOUT Yes C T TACH QUAD Simultaneous Single Value Output Operations SupportsSetSingleValues Continuous Operation Support SupportsContinuous Yes Yes Continuous Operation until Trigger SupportsContinuousPreTrigger Continuous Operation before amp after Trigger SupportsContinuousPrePostTrigger Waveform Operations Using FIFO Only SupportsWaveformModeOnly Simultaneous Start List Support SupportsSimultaneousStart Yes Supports Programmable Synchronization Modes SupportsSynchronization Synchronization Modes SynchronizationMode Interrupt Support SupportsinterruptOnChange Output FIFO Size FifoSize Auto Calibrate Support SupportsAutoCalibrate Yes a The input FIFO holds 8 kSamples 59 Chapter 6 Buffering Table 5 Buffering Options DT9824 A D D A DIN DOUT C T TACH QUAD Buffer Support SupportsBuffering Yes Single Buffer Wrap Mode Support SupportsWrapSingle Inprocess Buffer Flush Support SupportsinProcessFlush Yes Triggered Scan Mode Table 6 Triggered Scan Mode Options DT9824 A D D A DIN DOUT C T TACH QUAD Triggered Scan Support SupportsTriggeredScan Maximum Number of CGL Scans per Trigger MaxMultiScanCount 1 0 0 Maximum Retrigger Frequency MaxRetriggerF
43. guage to access the capabilities of the DT9824 module Refer to the Data Translation web site www datatranslation com for more information on the appropriate software package for your application Overview Accessories Table 1 lists the optional accessories are available for the DT9824 Table 1 Optional Accessories Available for the DT9824 Accessory Description STP37 The STP37 permits easy screw terminal connections for accessing the digital 1 O signals on a DT9824 module EP333 The EP333 is a 2 meter shielded cable with two 37 pin connectors that connects the STP37 screw terminal panel to the digital O connector of the module EP380 Single rack mount kit for mounting one DT8824 instrument module into a 1U rack EP379 Dual Rack mount kit for mounting two DT8824 instrument modules side by side into a 1U rack 17 Chapter 1 Getting Started Procedure The flow diagram shown in Figure 2 illustrates the steps needed to get started using the DT9824 module This diagram is repeated in each getting started chapter the shaded area in the diagram shows you where you are in the getting started procedure Install the Module see Chapter 2 starting on page 21 Wire Signals see Chapter 3 starting on page 29 Verify the Operation of the Module see Chapter 4 starting on page 37 Figure 2 Getting Started Flow Diagram 18 Part 1 Getting Started Knpacki
44. heck your wiring and either provide better shielding or reroute unshielded wiring Troubleshooting Table 21 Troubleshooting Problems cont Symptom Possible Cause Possible Solution Device failure error reported The DT9824 module cannot communicate with the Microsoft bus driver or a problem with the bus driver exists Check your cabling and wiring and tighten any loose connections The DT9824 module was removed while an operation was being performed Ensure that your DT9824 module is properly connected Data appears to be invalid Computer does not boot An open connection exists Check your wiring and fix any open connections A transducer is not connected to the channel being read Check the transducer connections The module is set up for differential inputs while the transducers are wired as single ended inputs or vice versa The power supply of the computer is too small to handle all the system resources Check your wiring and ensure that what you specify in software matches your hardware configuration the A D configuration should be differential Check the power requirements of your system resources and if needed get a larger power supply consult the module s specifications on page 89 of this manual 77 Chapter 8 78 Technical Support If you have difficulty using the DT9824 module Data Translation s Technical Support
45. llows LSB 20 0 00000119 V 16777216 Vin 2010 0 00000119 10 0 Vin 9 998 V Data Transfer The DT9824 module transfers data to a user buffer that you allocate in the host computer Keep the following recommendations in mind when allocating user buffers for continuous analog input operations on the DT9824 module e Allocate a minimum of two user buffers Specify the width of the buffer as 4 bytes Data is written to the allocated buffers continuously until no more empty buffers are available or you stop the operation The data is gap free Error Conditions The DT9824 module can report an A D overrun error if the A D sample clock rate is too fast The error occurs if a new A D sample clock pulse occurs while the ADC is busy performing a conversion from the previous A D sample clock pulse The host computer can clear this error To avoid this error use a slower sampling rate 53 Chapter 5 Digital I O Features The DT9824 module provides 8 digital input lines and 8 digital output lines that you can use to control external equipment including solid state or mechanical relays This section describes the following digital I O features of the DT9824 modules Digital input lines described below Digital output lines described on page 54 Channel to channel isolation described on page 55 Resolution described on page 55 Operation modes described on page 55 Digital Input Lines The DT9824 module f
46. ments 97 continuous analog input 59 continuous digital input 55 continuous wrap mode 52 conversion modes 51 digital I O 55 single value analog input 51 conversion rate 51 counter timer channels 61 clock sources 65 customer service 79 D DAQ Adaptor for MATLAB 16 data encoding 60 data flow modes continuous analog input 59 single value 59 99 Index 100 data transfer 53 DataAcq SDK 16 description of the functional subsystems A D 49 digital I O 54 device driver 16 differential channels 61 digital I O features adding a digital input port to the analog input channel list 50 channel to channel isolation 55 connecting input signals 35 connecting output signals 36 lines 54 operation modes 55 resolution 55 specifications 88 testing input operations 42 testing output operations 43 digital trigger 51 DT9824 Calibration Utility 16 DT9824 Device Driver 16 DT Open Layers for NET Class Library 16 DTx EZ 16 E encoding 52 environmental specifications 89 91 EP333 cable 17 34 EP365 cable 24 25 EP379 dual rack mount kit 17 EP380 single rack mount kit 17 errors analog input 53 external clock divider maximum 65 minimum 65 external digital trigger 51 negative 64 positive 64 F factory service 79 features 14 FIFO input 51 formatting data 52 frequency base clock 65 internal A D clock 65 internal A D sample clock 65 internal C T clock 65 internal retrigger clock 60 G gain actual available 61 an
47. module to the host computer if desired Note You can unplug a module and then plug it in again if you wish without causing damage This process is called hot swapping Your application may take a few seconds to recognize a module once it is plugged back in Connecting to a Self Powered USB Hub Self powered USB hubs are USB hubs that are powered by their own external power supply The practical number of DT9824 modules that you can connect to a single USB port depends on the throughput you want to achieve Note The bandwidth of the USB Ver 1 1 bus is 12 Mbits second For each DT9824 module the maximum sample rate is 4800 Samples s x 4 bytes per samples x 5 channels 4 analog input channels and the digital input port Therefore if you want to achieve full throughput on each module you should connect no more than four DT9824 modules to a single USB Ver 1 1 port To connect a DT9824 module to a self powered USB hub do the following 1 Attach one end of the EP365 cable to the DT9824 module and the other end of the EP365 cable to a self powered USB hub 2 Connect the power supply for the self powered USB hub to an external power supply 3 Connect the hub to the USB port on the host computer using another EP365 cable The operating system automatically detects the USB device and starts the Found New Hardware wizard 4 For Windows Vista a Click Locate and install driver software recommended The popup messag
48. ms 11 0 uVrms 16 0 6 ui Vrms 1 8 uVrms 2 8 uVrms 7 5 uVrms 32 0 4 uVrms 1 3 uVrms 2 3 uVrms 6 5 uVrms Figure 18 shows this data in graphical form 84 Specifications 70 0 60 0 50 0 40 0 uVrms 30 0 20 0 10 0 0 0 DT9824 System Noise z Dain 1 f Gain 8 ie Gain 16 ee Gain 32 10 100 960 4800 Data Rate SPS Figure 18 System Noise Specification Frequency Response and Input Bandwidth Each channel of the DT9824 includes a dedicated 24 bit Sigma Delta A D converter The ultra low noise and accuracy of these converters is achieved using an oversampling Sigma Delta modulator followed by a multi order Sinc filter and a digital low pass filter decimator The filter response has a gentle rolloff from DC with a 3 dB signal bandwidth that is determined by the user selected sampling rate shown in Table 24 Table 24 3 dB Bandwidth Sampling Frequency 3 dB Bandwidth Point Less than or equal to 600 Samples s 0 24 x sample rate Greater than 600 Samples s 0 23 x sample rate 85 Appendix A Figure 19 shows the frequency response using a sampling rate of 4800 Samples s Frequency Response 4800 SPS 3 dB point 1104 Hz Fa 1 10 100 1000 10000 Input Frequency Hz Figure 19 Frequency Response of the DT9824 When Using a Sampling Rate of 4800 Samples s As you can see the frequency response of the DT9824 gently r
49. n buttons until the Running Average value matches the value you applied e Repeat steps 4a to 4d selecting the next gain in the list until the gain values are calibrated for each gain setting 5 Repeat steps 2 to 4 for the remaining frequency until the offset and gain values are calibrated for each frequency for the selected channel 6 Repeat steps 1 to 5 for the remaining A D channels that you want to calibrate Note Atany time you can click Restore Factory Settings to reset the A D calibration values to their original factory settings This process will undo any auto or manual calibration settings 73 Chapter 7 74 General Checklist core Technical Support oc user em If Your Module Needs Factory Service Troubleshooting 75 Chapter 8 76 General Checklist Should you experience problems using the DT9824 module follow these steps Read all the documentation provided for your product Make sure that you have added any Read This First information to your manual and that you have used this Check the OMNI CD for any README files and ensure that you have used the latest installation and configuration information available Check that your system meets the requirements stated in the README file on the OMNI Check that you have installed your hardware properly using the instructions in Check that you have installed and configured the device driver properly using the instructions in Chapter 2
50. ne este Attaching Modules to the Computer Configuring the Driver 21 Chapter 2 Install the Module and Configure the Device Driver this chapter Wire Signals see Chapter 3 starting on page 29 Verify the Operation of the Module see Chapter 4 starting on page 37 22 Installing the Module Unpacking Open the shipping box and verify that the following items are present e DT9824 module s EP365 USB cable Data Acquisition OMNI CD ROM If an item is missing or damaged contact Data Translation If you are in the United States call the Customer Service Department at 508 481 3700 ext 1323 An application engineer will guide you through the appropriate steps for replacing missing or damaged items If you are located outside the United States call your local distributor listed on Data Translation s web site www datatranslation com 23 Chapter 2 Attaching Modules to the Computer You can attach a DT9824 module to the host computer in one of two ways Connect directly to a USB port of the host computer described on page 24 Use this method if one or two DT9824 modules are sufficient for your application Connect to one or more self powered USB hubs described on page 25 Use this method if your application requires more than two DT9824 modules connected to the host computer You must install the device driver before connecting your DT9824 module s to the host computer
51. olls off from DC due to the filtering of the Sigma Delta A D converter You can use software to apply a correction factor to the acquired data to compensate for the filter response of the A D converter The correction factor depends on the input frequency of the signal you are trying to measure and the sampling rate of the DT9824 Table 25 shows the gain correction factors for typical input frequencies and sampling rates 86 Specifications Table 25 Gain Correction Factors Sampling Rate of the DT9824 Frequency of the Input 10 25 60 100 600 960 1600 4800 Signal Hz Samples s Samples s Samples s Samples s Samples s Samples s Samples s Samples s DC 1 000 1 000 1 000 1 000 1 000 1 000 1 000 1 000 2 1 257 1 035 1 006 1 002 1 000 1 000 1 000 1 000 10 3 456 1 168 1 056 1 001 1 001 1 000 1 000 50 B 1 038 1 017 1 006 1 001 60 B 1 055 1 024 1 008 1 001 100 B 1 167 1 068 1 023 1 003 200 m 2 087 1 304 1 095 1 011 500 6 040 1 791 1 073 1000 T _ 1 325 2000 E 3 158 87 Appendix A Digital I O Specifications 88 Table 26 lists the specifications for the digital input DIN and digital output DOUT subsystems on the DT9824 module Table 26 Digital I O Specifications Feature DT9824 Specifications Number of digital I O lines 16 8 Isolated Inputs 8 Isolated Outputs Num
52. ot Connected 9 29 Digital Output 0 Not Connected 28 10 Digital Output 0 Figure 10 STP37 Screw Terminal Panel Connecting Digital Input Signals Figure 11 shows how to connect digital input signals lines 0 and 1 in this case to the digital I O connector on the DT9824 module A 5 V DT9824 Digital I O Connector 1 kQ N pin 1 49 DIN 0 lt TTL Outputs H pin2 C DIN 1 7 in 20 pin 20 DT SNo I pin 21 P DIN 1 1 kQ pull up to 5 V required for TTL outputs Figure 11 Connecting Digital Inputs 35 Chapter 3 Connecting Digital Output Signals The digital output lines on a DT9824 module act as solid state relays The customer supplied signal can be 30 V at up to 400 mA peak AC or DC You can use the digital output lines of the module to control solid state or mechanical relays or high current electric motors Figure 12 shows how to connect digital output signals to line 0 of the module to control a motor relay DT9824 Motor Digital I O Connector Relay Controlled by c 10A Software M Fuss pin 10 Digital Out 0 I mM 0 e R Hot X Neutral mm amp 1 120 V AC pin 29 Digital Out 0 or 240 VAC 30V DC 400 mA Output can switch AC or DC Figure 12 Switching up to 30 V at 400 mA 36 NL Verifying the Operation of the Module Running the Quick DataAcq Application 2 0
53. req 0 0 0 Minimum Retrigger Frequency MinRetriggerFreq 0 0 0 Data Encoding Table 7 Data Encoding Options DT9824 A D D A DIN DOUT C T TACH QUAD Binary Encoding Support SupportsBinaryEncoding Yes Yes Yes Twos Complement Support SupportsTwosCompEncoding Returns Floating Point Values ReturnsFloats a The DT9824 uses offset binary encoding for the 10 V range 60 Supported Device Driver Capabilities Channels Table 8 Channel Options DT9824 Number of Channels NumberOfChannels A D 5a D A DIN DOUT C T TACH QUAD SE Support SupportsSingleEnded Yes Yes SE Channels MaxSingleEndedChannels DI Support SupportsDifferential Yes DI Channels MaxDifferentialChannels Maximum Channel Gain List Depth CGLDepth Simultaneous Sample and Hold Support SupportsSimultaneousSampleHold Channel List Inhibit SupportsChannelListinhibit a You can acquire data from four analog input channels indices 0 to 3 and the digital input port index 4 Gain DT9824 Programmable Gain Support SupportsProgrammableGain Table 9 Gain Options Yes A D D A DIN DOUT C T TACH QUAD Number of Gains NumberOfSupportedGains Gains Available SupportedGains 1 8 16 32 61 Chapter 6 Ranges Table 10
54. rt procedure 78 troubleshooting table 76 TIL trigger 51 U unpacking 23 USB cable 24 25 V Visual Basic for NET programs 16 Visual Basic programs 16 Visual C programs 16 Visual C programs 16 voltage ranges 50 62 number of 62 W wiring signals digital inputs 35 digital outputs 36 voltage inputs 33 writing programs in C C 16 Visual Basic 16 Visual Basic NET 16
55. s described on page 50 Analog input conversion modes described on page 51 Triggers described on page 51 Data formats described on page 52 e Data transfer described on page 53 Error conditions described on page 53 Analog Input Channels The DT9824 module supports four simultaneous analog input channels configured differentially Refer to Chapter 3 for more information on wiring to the analog input channels The DT9824 module can acquire data from a single analog input channel or from a group of analog input channels In hardware analog input channels are numbered 1 to 4 in software the index of a channel is zero based Therefore to access channel 1 specify an index of 0 in software Similarly to access channel 4 specify an index of 3 in software Specifying a Single Analog Input Channel The simplest way to acquire data from a single analog input channel is to use a single value analog input operation using software refer to page 51 for more information about single value operations You can also specify a single channel using the analog input channel list described next Specifying One or More Analog Input Channels You can read data from one or more analog input channels using an channel gain list Because the DT9824 module features simultaneous sampling the order of the channels in the channel gain list does not matter You cannot specify the same channel more than once in the list Using software specify th
56. s for NET Class Library User s Manual If you are using the DataAcq SDK or a software application to program your device refer to the documentation for that software for more information Intended Audience This document is intended for engineers scientists technicians or others responsible for using and or programming the DT9824 module for data acquisition operations in the Microsoft Windows Windows XP Windows Vista or Windows 7 operating systems It is assumed that you have some familiarity with data acquisition principles and that you understand your application How this Manual is Organized This manual is organized as follows Chapter 1 Overview describes the major features of the DT9824 module as well as the supported software and accessories for the module and provides an overview of the getting started procedure Chapter 2 Installing the Module describes how to install the DT9824 module and configure the device driver Chapter 3 Wiring Signals describes how to wire signals to a DT9824 module Chapter 4 Verifying the Operation of the Module describes how to verify the operation of a DT9824 module with the Quick DataAcq application Chapter 5 Principles of Operation describes all of the features of the module and how to use them in your application Chapter 6 Supported Device Driver Capabilities lists the data acquisition subsystems and the associated features accessible using
57. starting on page 21 Wire Signals this page Verify the Operation of the Module see Chapter 4 starting on page 37 30 Wiring Signals Preparing to Wire Signals The front panel of the D19824 module shown in Figure 5 contains four analog input channels with screw terminal connectors for connecting analog input signals The rear panel of the DT9824 module shown in Figure 6 has a 37 pin digital I O connector for attaching 8 opto isolated digital input signals and 8 opto isolated digital output signals Ultra High Resolution DT9824 Precision Instrumentation Input ISO Channel USB Data Acquisition Module h1 Air Armed amp Triggered DATA TRANSLATION ee Analog Input Channels Figure 5 Analog Input Connectors of the DT9824 Front Panel DT9824 Digital In Out DATA TRANSLATION Digital I O Connector Figure 6 Digital l O Connector of the DT9824 Rear Panel 31 Chapter 3 Keep the following recommendations in mind when wiring signals to the DT9824 module Follow standard ESD procedures when wiring signals to the module e Use individually shielded twisted pair wire size 14 to 26 AWG when using the DT9824 module in highly noisy electrical environments Separate power and signal lines by using physically different wiring paths or conduits Toavoid noise do not locate the DT9824 module and cabling next to sources that produce high electromagnetic fields
58. t 2 22 Digital Input 2 4 Digital Input 3 23 Digital Input 3 5 Digital Input 4 24 Digital Input 4 6 Digital Input 5 25 Digital Input 5 7 Digital Input 6 26 Digital Input 6 8 Digital Input 7 27 Digital Input 7 9 Not Connected 28 Not Connected 10 Digital Output O 29 Digital Output O 11 Digital Output 1 30 Digital Output 1 12 Digital Output 2 31 Digital Output 2 13 Digital Output 3 32 Digital Output 3 14 Digital Output 4 33 Digital Output 4 15 Digital Output 5 34 Digital Output 5 16 Digital Output 6 35 Digital Output 6 17 Digital Output 7 36 Digital Output 7 18 External Trigger 37 External Trigger 19 Not Connected Note The outer shell of the connector provides the cable shield to chassis ground 95 Appendix B USB Connector Figure 22 shows the pin locations of the USB connector on the DT9824 module Figure 22 USB Connector Table 32 lists the pin assignments of the digital I O connector Table 32 USB Connector Pin Assignments Pin Signal Description Pin Signal Description 1 USB 5 V 3 USB Data 2 USB Data 4 USB Ground 96 Connector Pin Assignments and LED Status Indicators LED Status Indicators Each DT9824 module has a single bi color LED that indicates the status of the module as described in Table 33 Table 33 LED Status Indicators on the DT9824 Module Color of the LED Status Description Green
59. t the module the LED on the module turns green 4 Select digital output port B by clicking Port B 5 Click the appropriate bits to select the type of signal to write from the digital output lines If the bit is selected a high level signal is output from the digital output line if the bit is not selected a low level signal is output from the digital output line Optionally you can enter an output value in the Hex text box 6 Click Send The application outputs and displays the value of each digital output line of digital port B on the screen in both text and graphical form 43 Chapter 4 Part 2 Using Your Module Chapter 46 JJ Principles of Operation Analog Input Peatulgs nee e ee Ue eb es eie as 49 Digital I O Features 47 Chapter 5 48 Figure 13 shows a block diagram of the DT9824 module 1SO Channel Input 1 Channel 4 Control FPGA 84KB 280 V SRAM gt 8 Dig Out F e Calibration ROM DT9824 ISO Channel mov 37 Pic D Shell Connector Trigger 5i d USB 2 0 Processor 2 EE Figure 13 Block Diagram of the DT9824 Module Principles of Operation Analog Input Features This section describes the following features of the analog input A D subsystem on the DT9824 module Analog input channels described on page 49 Input resolution described on page 50 Input ranges and gains described on page 50 A D sample clock source
60. te For best accuracy when connecting voltage inputs use twisted pair wires with a dead ended shield connected to pin 4 of the screw terminal block 33 Chapter 3 Connecting Digital I O Signals To make digital I O connections easier you can use the optional STP37 screw terminal panel and EP333 cable with your DT9824 module Connect the STP37 to the digital I O connector of the module as shown in Figure 9 DT9824 DATA TRANSLATION Connect the EP333 Cable to the Digital I O Connector of DT9824 Module and to the STP37 EP333 Cable Assembly Figure 9 Connecting the STP37 to the DT9824 Module Figure 10 shows the layout of the STP37 screw terminal panel and lists the assignments of each screw terminal 34 Wiring Signals S Digital Input 1 2 TB1 36 Digital Output 7 Digital Input 1 21 17 Digital Output 7 Digital Input 2 3 1 20 18 19 37 35 Digital Output 6 Digital Input 2 22 TB2 gd tgl TB3 16 Digital Output 6 Digital Input 3 4 555595 34 Digital Output 5 Digital Input 3 23 EEE 15 Digital Output 5 Digital Input 4 5 835 8 s 33 Digital Output 4 Digital Input 4 24 EA E 9 E 14 Digital Output 4 Digital Input 5 6 g 32 Digital Output 3 Digital Input 5 25 13 Digital Output 3 Digital Input 6 7 31 Digital Output 2 Digital Input 6 26 TB4 TBS 12 Digital Output 2 Digital Input 7 8 30 Digital Output 1 Digital Input 7 27 11 Digital Output 1 N
61. the DT9824 Device Driver Chapter 7 Calibration describes how to calibrate the analog input circuitry of the DT9824 module About this Manual 10 Chapter 8 Troubleshooting provides information that you can use to resolve problems with the module and the device driver should they occur Appendix A Specifications lists the specifications of the DT9824 module Appendix B Connector Pin Assignments and LED Status Indicators shows the pin assignments for the connectors and the screw terminal assignments for the DT9824 module An index completes this manual Conventions Used in this Manual The following conventions are used in this manual Notes provide useful information or information that requires special emphasis cautions provide information to help you avoid losing data or damaging your equipment and warnings provide information to help you avoid catastrophic damage to yourself or your equipment Items that you select or type are shown in bold Related Information Refer to the following documents for more information on using the DT9824 module Benefits of the Universal Serial Bus for Data Acquisition This white paper describes why USB is an attractive alternative for data acquisition It is available on the Data Translation web site www datatranslation com DT Open Layers for NET User s Manual UM 22161 For programmers who are developing their own application programs using Visual C or Visual
62. tions DT9824 A D D A DIN DOUT C T TACH QUAD Software Programmable AC Coupling SupportsACCoupling Software Programmable DC Coupling SupportsDCCoupling Software Programmable External Excitation Current Source SupportsExternalExcitationCurrentSrc Software Programmable Internal Excitation Current Source SupportsinternalExcitationCurrentSrc Available Excitation Current Source Values SupportedExcitationCurrentValues 63 Chapter 6 64 Strain Gage Support Table 14 Strain Gage Support Options DT9824 A D Strain Gage Support SupportsStrainGage D A DIN DOUT C T TACH QUAD External Excitation Voltage SupportsExternalExcitationVoltage Internal Excitation Voltage SupportsinternalExcitationVoltage Shunt Calibration SupportsShuntCalibration Voltage Excitation Per Channel SupportedPerChannelVoltageExcitation Minimum Excitation Voltage MinExcitationVoltage MaxExcitationVoltage Maximum Excitation Voltage Triggers Table 15 Trigger Options DT9824 Software Trigger Support SupportsSoftwareTrigger A D Yes D A DIN Yes DOUT Yes C T TACH QUAD External Positive TTL Trigger Support SupportsPosExternalTTLTrigger External Negative TTL Trigger Support SupportsNegExternalTTLTrigger Yes Yes External Positive TTL Trigger Support for Single Value
63. ule Mating connector 37 pin D AMP part 5747847 4 AMP Tyco partit 5 747916 2 91 Appendix A 92 Connector Pin Assignments and LED Status Indicators Analog Input Screve Terminale cs cece an ae e ey re a 94 Digital PO COnDeector 22 2 2 R REER ee a na 95 USB COMNOC OT CC 96 LED Slatus ndlizsiers een en nn karl een ae 97 93 Appendix B Analog Input Screw Terminals Figure 20 shows the terminal blocks for each analog input channel on the DT9824 module Figure 20 Screw Terminals of the Analog Input Channels Table 30 summarizes the screw terminal assignments Table 30 Screw Terminal Assignments for the Analog Input Channels Screw Terminals Signal Description 1 Analog Input 2 Not Connected 3 Analog Input 4 Analog Ground 94 Connector Pin Assignments and LED Status Indicators Digital VO Connector Figure 21 shows the pin locations of the digital I O connector on the DT9824 module 1 9 1 0O0000000000000000000 37 20 OOOO0OO00O000000000000 Figure 21 Digital I O Connector Table 31 lists the pin assignments of the digital I O connector Table 31 Digital UO Connector Pin Assignments Pin Signal Description Pin Signal Description 1 Digital Input O 20 Digital Input O 2 Digital Input 1 21 Digital Input 1 3 Digital Inpu
64. versions Using software specify the trigger source as a software trigger External trigger An external digital trigger occurs when the DT9824 module detects either a falling edge or rising edge on the External trigger line The edge type is software programmable The external trigger connection is a differential input allowing for TTL level or switch connections The positive side is pulled up to 5 V If you are using the external trigger to detect a contact closure ensure that you configure the polarity of the external trigger for a falling edge high to low transition Analog Input Conversion Modes The DT9824 module supports the following conversion modes Single value operations are the simplest to use but offer the least flexibility and efficiency Using software you can specify the range gain and index of the analog input channel and acquire the data from that channel The data is returned immediately For a single value operation you cannot specify a clock source trigger source or buffer Single value operations stop automatically when finished you cannot stop a single value Operation Continuous mode takes full advantage of the capabilities of the DT9824 module You can specify a trigger source and buffer using software Refer to page 53 for more information on buffers You can stop a continuous operation by performing either an orderly stop or an abrupt stop using software In an orderly stop the module

DT9824 User's Manual

Contents

Download Pdf Manuals

Related Search

Related Contents