DT9824 User`s Manual
Contents
1. DT9824 A D D A DIN DOUT C T 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 Gain Table 7 DT9824 Channel Options DT9824 Number of Channels NumberOfChannels A D D A DIN 5a 0 1 DOUT C T QUAD SE Support SupportsSingleEnded Yes Yes SE Channels MaxSingleEndedChannels DI Support SupportsDifferential Yes DI Channels MaxDifferentialChannels CGLDepth Maximum Channel Gain List Depth 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 Table 8 DT9824 Gain Options DT9824 A D D A DIN DOUT C T QUAD Programmable Gain Support SupportsProgrammableGain Yes Number of Gains NumberOfSupportedGains 4 1 1 Gains Available SupportedGains 1 8 16 32 1 1 61 Chapter 6 Ranges Table 9 DT9824 Range Options DT9824 Number of Voltage Ranges NumberOfRanges A D D A DIN DOUT C T QUAD Available Ranges SupportedVoltageRanges2. 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 specify 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 Note According to sampling theory Nyquist Theorem specify a frequency that is at least twice as fast as the input s highest frequency component For example to accurately sample a 400 Hz signal specify a sampling frequency of at least 800 Hz to avoid aliasing 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 oc
3. 10V Current Output Support SupportsCurrentOutput Resolution 62 Table 10 DT9824 Resolution Options DT9824 Software Programmable Resolution SupportsSoftwareResolution A D D A DIN DOUT C T QUAD Number of Resolutions NumberOfResolutions Available Resolutions SupportedResolutions 24 Supported Device Driver Capabilities Thermocouple and RTD Support Table 11 DT9824 Thermocouple and RTD Support Options DT9824 AID D A DIN DOUT C T 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 12 DT9824 IEPE Support Options DT9824 AID D A DIN DOUT C T QUAD Software Programmable AC Coupling SupportsACCoupling Software Programmable DC Coupling SupportsDCCoupling
4. Channel to channel offset 40 uV System noise 3 6 uV rms see Figure 15 on page 82 DC resolution 10 Hz 22 bits Effective number of bits ENOB 100 Hz with a 10 Hz 9 9 V sine wave input 18 bits Channel crosstalk 150 dB 1 kHz Input coupling DC Isolation voltage 500 V to computer ground Channel to channel isolation ESD protection Arc Contact 500 V 8 kV 4 kV Internal reference 1 25 V 0 001 V FIFO 8192 samples 81 Appendix A Table 18 A D Subsystem Specifications cont Feature DT9824 Specifications Frequency response 3 dB point low pass f 3 dB 0 23 x fADC Signal Amplitude 3 dB Point low pass Frequency Internal clock Warm up time 100 ppm maximum typical initial 25 ppm 1 hour a This clock is derived from the crystal oscillator The specification includes initial tolerance power supply variations temperature drift and 1 year stability 300 250 6 6 x RMS 200 150 100 50 Typical RMS Noise in uV PP 82 Gain Figure 15 System Noise Specification Specifications Digital I O Specifications Table 19 lists the specifications for the digital input DIN and digital output DOUT subsystems on the DT9824 module Table 19 Digital I O Specifications Feature DT9824 Specifications Number of digital I O line
5. Software Programmable External Excitation Current Source SupportsExternalExcitationCurrentSrc Software Programmable Internal Excitation Current Source SupportsinternalExcitationCurrentSrc Available Excitation Current Source Values SupportedExcitationCurrentValues 63 Chapter 6 Triggers Table 13 DT9824 Trigger Options DT9824 Software Trigger Support SupportsSoftwareTrigger A D Yes D A DIN Yes DOUT Yes C T QUAD External Positive TTL Trigger Support SupportsPosExternalTTLTrigger Yes External Negative TTL Trigger Support SupportsNegExternalTTLTrigger Yes External Positive TTL Trigger Support for Single Value 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 Clocks 64 Table 14 DT9824 Clock Options DT9824 Internal Clock Support SupportsinternalClock A D Yes D A DIN DOUT C T QUAD External Clock Support SupportsExternalClock Simultaneous Input Output on a Single Clock Signal SupportsSimultaneousClocking Base Clock Frequency BaseClockFrequency 4800 Hz Maximum Clock
6. Chapter 6 Supported Device Driver CapabilitieS 57 Data Flow and Operation Options 59 B ffetitig ce sot e Geta eoe oai put Me extis END an a n entes Rees on dus O 60 Triggered Scan Mod ne rent reae eaten ie re eate ita eie Xt e tte t eis 60 Data Encoding 2 ee Veneti tette dete Va ee tura ee Su eee A 60 Channels 2 pie ete quee e gere ea E R Bite ete Reate ei wap uate EE RSEN ae 61 Gals ceste is oed reared el cee futi Der opes 61 RANGES s nen epa ER Aaa eet em A acea Re Ben 62 Resolution 2 ru a ara RUNI RN PERL et iM woe 62 Thermocouple and RTD Support e nennen nennen 63 TEPE SUpport arta des e ER tae vade ern dee pe tna 63 THIS BOIS cn e des o Sar uper edo dn cop tee ded 64 Clocks a Ee ed pote Re ol coto ed Us ud le i e 64 Counter K S uo vi eV EVI aso nun descri PEDE 65 Chapter 7 CalibratiON oooooooconcoccrnn I IRI hm hn 67 Overview c eet a e See e e re te ose phate RR RETE e 68 Using the Auto Calibration Procedure eee 69 Using the Manual Calibration Procedure eee 70 Contents Chapter 8 Troubleshooting eee eee 73 General Checkliste ders pias betel ridad dadas AND RA 74 Technical SUpport vada a states ate tte tte Dam el 76 If Your Module Needs Factory Service esee 77 Appendix A Specifications nnn 79 Analog Input Specifications isses nnn 80 Digital I O Specifications esee A reed 83
7. 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 features eight isolated digital input lines Digital inputs operate from 3 to 28 V DC with a switching time of 2 ms maximum Figure 13 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 7 Figure 13 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 14 shows the digital output circuitry 54 Principles of Operation Figure 14 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
8. Power Physical and Environmental Specifications 84 Regulatory Specifications enn 85 Connector Specifications 86 Appendix B Connector Pin Assignments o 87 Analog Input Screw Terminals e e en 88 Digital I O Connector ssr u ean a Rare mus a a 89 USB CONNECTOR tiie inh iE e LUAM Us LL sd 90 Index luci ele Ai a eee eR E E 91 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 Layers 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 Win
9. 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 components 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 77 Chapter 8 78 m Specifications Analog Input Spesiheatiame cs len ee rim ed nr repete n ee mad le 80 Digital OP ICA MOINS eroe nce eer TI Ie GbR HEROS I EUR IH Sd P be ee eon 83 Power Physical and Environmental Specifications 84 Recula lor Y PEDIDOS nee een eres EE eda 85 Connector DECI EDS ccoo i prio ii FERES peli peri Rb ed 86 79 Appendix A Analog Input Specifications Table 18 lists the specifications for the A D subsystem on the DT9824 module Table 18 A D Subsystem Specifications Feature DT9824 Specifications Number of
10. Separate power and signal lines by using physically different wiring paths or conduits To avoid noise do not locate the DT9824 module and cabling next to sources that produce high electromagnetic fields 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 31 Chapter 3 Connecting Analog Input Signals You can connect analog input signals to the DT9824 module in the differential configuration only Figure 5 shows the numbering of the screw terminal blocks for analog input connections DO CD D 4 3 2 1 GND No Connect Figure 5 Screw Terminal Block Numbering for Analog Input Connections Figure 6 shows how to connect voltage inputs
11. 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 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 D Supported Device Driver Capabilities Data Plow and Operation Pie ea ne ia 59 CLI GI ARR 60 Me E TTT 60 Us Ad A
12. retrigger frequency 60 93 Index 94 triggers 51 external 51 external negative digital 64 external positive digital 64 software 51 64 troubleshooting procedure 74 service and support procedure 76 troubleshooting table 74 TIL trigger 51 U unpacking 23 USB cable 24 25 V Visual Basic for NET programs 15 Visual Basic programs 15 Visual C programs 15 Visual C programs 15 voltage ranges 50 62 number of 62 W wiring signals digital inputs 34 digital outputs 35 voltage inputs 32 writing programs in C C 15 Visual Basic 15 Visual Basic NET 15 Visual Cft 15 Visual C 15
13. Divider MaxExtClockDivider 1 0 1 0 1 0 Minimum Clock Divider MinExtClockDivider 1 0 1 0 1 0 Maximum Frequency MaxFrequency 4800 Hz Minimum Frequency MinFrequency 4 7 Hz Supported Device Driver Capabilities Counter Timers Table 15 DT9824 Counter Timer Options DT9824 A D D A DIN DOUT C T 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 SupportsGateF
14. Z x x ui ul TB4 TB5 Connecting Digital Input Signals Figure 9 shows how to connect digital input signals lines 0 and 1 in this case to the digital I O connector on the DT9824 module 36 17 35 16 34 15 33 14 32 13 31 12 30 11 29 10 Digital Output 7 Digital Output 7 Digital Output 6 Digital Output 6 Digital Output 5 Digital Output 5 Digital Output 4 Digital Output 4 Digital Output 3 Digital Output 3 Digital Output 2 Digital Output 2 Digital Output 1 Digital Output 1 Digital Output 0 Digital Output 0 A 5 V DT9824 Digital UO Connector z 1k0 N pin T 49 DIN 0 lt TTL Outputs H pin 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 34 Figure 9 Connecting Digital Inputs Wiring Signals 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 10 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 W Fuss pin 10 Digital Out 0 I ran e EY Hot
15. configuration of your device driver The module is damaged Contact Data Translation for technical support refer to page 76 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 84 of this manual and the documentation provided by your computer manufacturer for more information Electrical noise exists Check your wiring and either provide better shielding or reroute unshielded wiring Troubleshooting Table 17 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
16. 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 84 of this manual 75 Chapter 8 76 Technical Support If you have difficulty using the DT9824 module Data Translation s Technical Support 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 e 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
17. rack mount kit 16 errors analog input 53 external clock divider maximum 64 minimum 64 external digital trigger 51 negative 64 positive 64 F factory service 77 features 14 formatting data 52 frequency base clock 64 internal A D clock 64 internal A D sample clock 64 internal C T clock 64 internal retrigger clock 60 G gain actual available 61 analog input 50 number of 61 programmable 61 H help 73 help online 39 high drive digital outputs 35 hot swapping 25 26 I inprocess buffers 60 input configuration 32 input ranges 50 internal clock 64 L LabVIEW 15 LV Link 15 M MATLAB 15 MaxDifferentialChannels 61 MaxExtClockDivider 64 MaxFrequency 64 MaxMultiScanCount 60 MaxRetriggerFreq 60 MaxSingleEndedChannels 61 Measure Foundry 15 mechanical relays controlling 35 MinExtClockDivider 64 MinFrequency 64 MinRetriggerFreq 60 module specifications 84 86 multiple channels analog input 49 N no wrap mode 52 number of differential channels 61 gains 61 I O channels 61 resolutions 62 Index scans per trigger 60 single ended channels 61 voltage ranges 62 NumberOfChannels 61 NumberOfRanges 62 NumberOfResolutions 62 NumberOfSupportedGains 61 Nyquist Theorem 51 O offset binary encoding 52 60 online help 39 operation modes continuous digital input 55 single value analog input 51 single value digital I O 55 orderly stop 51 P physical specifications 84 86 power specific
18. 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 DT 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 32 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 b
19. 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 follows 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
20. 61 HIER see ariano 61 Don UTER 62 po A eed ubere oder irta a 62 Thetmocouple and KIO CUPP rasanten a 63 O EET 63 ji nnn 64 S ms 64 Counter FT A ee ne REGE ea 65 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 2 DT9824 Subsystems om Ro oa ow Joa er ato 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 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 3 DT9824 Data Flow and Operation Options DT9824 A D D A DIN DOUT C T QUAD Single Value Operat
21. C to 85 C Relative humidity To 95 noncondensing 84 Specifications Regulatory Specifications Table 21 lists the regulatory specifications for the DT9824 module Table 21 Regulatory Specifications Feature DT9824 Specifications Emissions EMI FCC Part 15 EN55022 1994 A1 1995 A2 1997 VCCI AS NZS 3548 Class A Immunity EN61000 6 1 2001 RoHS EU Directive 2002 95 EG Compliant as of July 1st 2006 85 Appendix A 86 Connector Specifications Table 22 lists the cable and connector specifications for the DT9824 module Table 22 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 module Mating connector 37 pin D AMP partit 5747847 4 AMP Tyco partit 5 747916 2 Connector Pin Assignments Analog Input Serew Terminals naeh eu dh 88 INSEL TAO DBPIIBCLOE esie ee den e prre ei d e en a 89 UOB anne cioe CEPIT P eet ru rb vU E RC RR VES CU uS AS 90 87 Appendix B Analog Input Screw Terminals Figure 16 shows the terminal blocks for each analog input channel on the DT9824 module Figure 16 Screw Terminals of
22. DATA TRANSLATION UM 23782 B DT9824 User s Manual Second Edition May 2010 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 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 F R 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 Measure Foundry ISO Channel DT Open Layers DT Open Layers for NET Class Library DataAcq SDK LV Link and DTx EZM are trademarks of Data Translation Inc All other brand and product names are trademarks or registered trademarks of their respective companies Radio and Television Interfere
23. Neutral o mm e 1 120 V AC pin 29 Digital Out 0 or 240 V AC 30V DC 400 mA Output can switch AC or DC Figure 10 Switching up to 30 V at 400 mA 35 Chapter 3 36 Y Verifying the Operation of the Module Running the Quick DataAcq Application 39 Testing omple yalue T opa a na en ad 40 Testing Continous Analog Input iaia 41 Testing Continuous Analog Input i se est a RE REC Rd 41 Testing omples oue Die tal Input nee tre ia 42 Testing omete Value Dis tal COulpit en eese ex me 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 y 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
24. T9824 module Refer to page 35 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 select 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 E A es eie as 49 Digital I O Features 47 Chapter 5 48 Figure 11 shows a block diagram of the DT9824 module ISO Channel Input 1 Channel 4 Control FPGA 84KB 280 V SRAM gt 8 Dig Out a Calibration ROM DT9824 ISO Channel mov 37 Pic D Shell Connector Trigger Bi d USB 2 0 Processor 2 EE Figure 11 Block Diagram of the DT9824 Module Principles of Operation Analog Input Features This
25. a 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 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 34 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 D
26. all 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 3 The operating system automatically detects the USB devices as they are installed DT9824 Module DT9824 Module EP365 Cables EP365 Cable H EP365 Cable x E S Power Ma Self Powere for Hub USB Hubs iu Host Computer DT9824 Module DT9824 Module EP365 Cables Figure 3 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 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 t
27. alling Gate Rising Edge Type SupportsGateRising Interrupt Driven Operations Supportsinterrupt 65 Chapter 6 66 review E Using the Auto Calibration Procedure Using the Manual Calibration Procedure Calibration 67 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 68 Calibration Using the Auto Calibration Procedure Note Ensure that you let the DT9824 module warm up for a minimum of 1 hour before calibrating the unit 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 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 3 Ensure that you supply the correct voltage to the selected cha
28. amage 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 message Windows needs your permission to continue appears b Click Continue The Windows Security dialog box appears c Click Inst
29. 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 Q 10 Hz full scale Gain 1 0 00196 Gain 8 0 002 Gain 16 0 003 Gain 32 0 005 System accuracy 100 Hz full scale Gain 1 0 003 Gain 8 0 006 Gain 16 0 007 Gain 32 0 012 System accuracy 1200 Hz full scale Gain 1 0 004 Gain 8 0 006 Gain 16 0 008 Gain 32 0 015 System accuracy 4800 Hz full scale Gain 1 0 020 Gain 8 0 024 Gain 16 0 037 Gain 32 0 033 Nonlinearity integral Gain 1 10 ppm full scale maximum Gain gt 1 20 ppm full scale maximum Differential linearity 1 0 LSB no missing codes Input range Gain 1 10 V Gain 8 1 25 V Gain 16 0 625 V Gain 32 0 3125 V 80 Specifications Table 18 A D Subsystem Specifications cont Feature DT9824 Specifications Zero drift lt 960 Hz 0 1 uV C 0 020 uV x gain C 960 Hz 0 1 uV C 0 250 uV x gain C Gain drift 15 ppm C Input impedance Power off 3kQ Power on 10 MQ 3 KQ in series with 4700 pF Input bias current x5 nA Input noise 3 6 uV rms Q 10 Hz sample rate Analog input filter 10 kHz Common mode rejection gt 150 dB Common mode voltage x500 V maximum operational Maximum input voltage 40 V maximum protection
30. ation 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 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 17 to isolate and solve the problem If you cannot identify the problem refer to page 74 Table 17 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 gt System gt Hardware gt 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
31. ations 84 86 Q Quick DataAcq 15 running 39 quickDAQ application 15 R rack mount kits 16 ranges analog input 50 number of 62 resolution 55 analog input 50 available 62 number of 62 retrigger clock frequency 60 returning modules to the factory 77 RMA 77 running the Quick DataAcq application 39 S scan 52 screw terminal assignments 32 screw terminal panel 16 33 SDK 15 service and support procedure 76 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 84 software supported 15 software trigger 51 64 solid state relays controlling 35 sourcing 35 specifications 79 analog input 80 digital I O 83 environmental 84 86 physical 84 86 power 84 86 regulatory 85 stopping an operation 51 STP37 screw terminal panel 16 33 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 64 SupportsNegExternalTTL Trigger 64 SupportsPosExternalTTL Trigger 64 SupportsProgrammableGain 61 SupportsSimultaneousStart 59 SupportsSingleEnded 61 SupportsSingleValue 59 SupportsSoftwareTrigger 64 T technical support 76 throughput maximum 64 minimum 64 transferring data 53 triggered scan number of scans per trigger 60
32. 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 ISO 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 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 paced analog input operations Software programmable trigger type software or external digital trigger to start analog input operations 8 opto isolated digital input lines 8 opto isolated digital output lines the outputs are solid state relays that operate from 30 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 a
33. cting 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 16 for the selected gain Table 16 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 Adjust the gain by entering values in the Gain edit box or by clicking the up down buttons until the AD Voltage matches the voltage you applied d Repeat steps 4a to 4d selecting the next gain in the list until the gain values are calibrated for each gain setting 70 Calibration 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 71 Chapter 7 72 General Checklist Technical Support If Your Module Needs Factory Service ccce ee eet me te ker id Troubleshooting 73 Chapter 8 74 General Checklist Should you experience problems using the DT9824 module follow these steps Read all the document
34. curs 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 conversions Using software specify the trigger source as a software trigger e 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 modu
35. dows 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 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 shows
36. e 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 Note The DT9824 module is a low power device using less than 500 mA therefore it does not require an external power supply Con
37. gain list depth 61 channels analog input 49 digital I O 54 number of 61 clocks base frequency 64 internal 64 maximum external clock divider 64 maximum throughput 64 minimum external clock divider 64 minimum throughput 64 connecting signals digital inputs 34 digital outputs 35 voltage inputs 32 connecting to the host computer directly 24 using a self powered USB hub 25 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 64 customer service 77 D DAO Adaptor for MATLAB 15 data encoding 60 data flow modes continuous analog input 59 single value 59 data transfer 53 DataAcq SDK 15 91 Index 92 description of the functional subsystems A D 49 digital I O 54 device driver 15 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 34 connecting output signals 35 lines 54 operation modes 55 resolution 55 specifications 83 testing input operations 42 testing output operations 43 digital trigger 51 DT9824 Calibration Utility 15 DT9824 Device Driver 15 DT Open Layers for NET Class Library 15 DTx EZ 15 E encoding 52 environmental specifications 84 86 EP333 cable 16 33 EP365 cable 24 25 EP379 single rack mount kit 16 EP380 dual
38. he 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 RA esee eme ta Connecting Digital I O Signals Wiring Signals 29 Chapter 3 Install the Module see Chapter 2 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 DT9824 module shown in Figure 4 contains four analog input channels with screw terminal connectors for connecting analog input signals and a 37 pin digital I O connector for attaching 8 opto isolated digital input signals and 8 opto isolated digital output signals A D Chan 2 A D Chan 4 o ES DA Front View AID Chan 1 AID Chan 3 Rear View O n 7 Digital VO Connector USB Port Figure 4 Connectors of the DT9824 Keep the following recommendations in mind when wiring signals to the DT9824 module Follow standard ESD procedures when wiring signals to the module Use individually shielded twisted pair wire size 14 to 26 AWG when using the DT9824 module in highly noisy electrical environments
39. ion Support SupportsSingleValue Yes Yes Yes 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 8 Auto Calibrate Support SupportsAutoCalibrate Yes 59 Chapter 6 Buffering Table 4 DT9824 Buffering Options DT9824 A D D A DIN DOUT C T QUAD Buffer Support SupportsBuffering Yes Single Buffer Wrap Mode Support SupportsWrapSingle Inprocess Buffer Flush Support SupportsinProcessFlush Yes Triggered Scan Mode Table 5 DT9824 Triggered Scan Mode Options DT9824 A D D A DIN DOUT C T QUAD Triggered Scan Support SupportsTriggeredScan Maximum Number of CGL Scans per Trigger MaxMultiScanCount 1 Maximum Retrigger Frequency MaxRetriggerFreq 0 Minimum Retrigger Frequency MinRetriggerFreq 0 Data Encoding Table 6 DT9824Data Encoding Options
40. le 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 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 51 Chapter 5 52 DT9824 modules use an 8 kbyte input buffer 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 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 e 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 y
41. n on the appropriate software package for your application 15 Chapter 1 Accessories The following optional accessories are available for the DT9824 module e STP37 screw terminal panel The STP37 permits easy screw terminal connections for accessing the digital I O signals on a D19824 module e EP333 cable The EP333 is a 2 meter shielded cable with two 37 pin connectors that connects the STP37 screw terminal panel to the digital I O connector of the module e Rack mount kits To rack mount a single module order EP379 a single rack mount kit Data Translation part number 23610 To rack mount two modules side by side order EP380 a dual rack mount kit Data Translation part number 23604 16 Overview Getting Started Procedure The flow diagram shown in Figure 1 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 1 Getting Started Flow Diagram 17 Chapter 1 18 Part 1 Getting Started Knpackine iia da Attaching Modules to the Computer Configuring the Driver 21 Chapter 2 Install the Module and Configur
42. nalog and digital measurements Overview 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 67 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 and save data to disk The quickDAO 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 Measure Foundry An evaluation version of this software is included on the Data Acquisition OMNI CD Measure Foundry is drag and drop test and measurement application builder desig
43. nce 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 Communication
44. necting 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 2 The operating system automatically detects the USB device and starts the Found New Hardware wizard USB Ports uc A DT9824 Host Computer Modules y EP365 Cables Figure 2 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 module to the host computer if desired Note You can unplug a module and then plug it in again if you wish without causing d
45. ned to give you top performance with ease of use development Order the full development version of this software package to develop your own application using real hardware 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 An evaluation version of LV Link is included on the Data Acquisition OMNI CD Use this optional software package if you want to use the LabVIEW graphical programming language to access the capabilities of the DT9824 module Refer to the Data Translation web site www datatranslation com for more informatio
46. ng the Operation of the Module 37 Running the Quick DataAcq Application ee 39 Testing Single Value Analog Input rr 40 Testing Continuous Analog Input K K eee 41 Testing Single Value Digital Input or 42 Testing Single Value Digital Output 43 Contents Part 2 Using Your Module 00 45 Chapter 5 Principles of Operation 00 cece eee eee eee 47 AnalogInputFeatures RER Z R e TERK NR nn 49 Analog Input Channels srs 9 Ee 0 N THT TE T seine R HR RR eH R He H Re T 49 Specifying a Single Analog Input Channel 49 Specifying One or More Analog Input Channels 49 Specifying the Digital Input Port in the Analog Input Channel List 50 Input Resolutions ir utes eau tes na edes tete p e are en 50 Input Ranges and GaidS ooooooooccccnnrrrrr rr 50 A D Sample Clock iii Whee den ee Bee ee 50 IAS oa abia 51 Analog Input Conversion Modes s 51 D ta Formati sr een AA SO V Ea heb er T ERES 52 Data raster rarr eter p AR UE AR AIR A AREE RN NE EUREN 53 Error COMI ONS ee N uber ian alal E ip gei ina 53 Digital I O Features i este eee e se ee ee Bi ee een tee 54 Digital Input Lines i opp eerte tae na 54 Digital Output Lines cre i em x RR RE ERR RR n 54 Channel to Channel Isolation eee 55 ResolutiOri si cepere eter e Ru Bakes RE Ege RUE Ru a AME ERN 55 Operation Modes ios rer oet echte e ute tee Earl er 55
47. ng their own application programs using the Microsoft C compiler this manual describes how to use the DT Open Layers DataAcq SDK M 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 73 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 6 MD 14 supported BONATE sec cassar sisi astune eia RR 15 17 Getting Started Procedure 13 Chapter 1 14 Features The DT9824 is a high resolution 24 bit data acquisition module for the Universal Serial Bus USB Most computers have two or more USB ports that allow direct connection to USB devices You can expand the number of USB devices
48. nnel 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 69 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 the unit 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 1200 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 Apply a voltage of 0 V to the selected channel c Adjust the offset by entering values in the Offset edit box or by clicking the up down buttons until the AD Voltage matches the value you applied d Repeat steps 3a to 3d sele
49. ou want the input operation to stop automatically when the number of scans specified has been acquired Figure 12 illustrates continuous wrap mode using a channel list with five entries analog input channel indices 0 1 2 3 and the digital input data index 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 I Input Sample Clock Data is acquired continuously Initial trigger event occurs Figure 12 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 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 e LSB is the least significant bit FSR is the full scale range For the DT9824 the full scale range is 20 e Nis the input resolution 24 bits e Vin is the analog voltage e Code is the raw count
50. ox 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 Operation 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 32 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 dat
51. put 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 the 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 1 lists the supported gains and effective input range of each input range on the DT9824 module Table 1 Effective Input Ranges
52. s 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 e 9 How this Manual is Organized 9 Conventions Used in this Manual eee 10 Related Information 2I 2er Lehen fen 10 Where Lo Get Help a ss fusti sea nc da ida lena 11 Chapter 1 Overview oooooocccccnn Rh hh nnn 13 E atutes d Eee e t OR EC E rg ue e elia 14 Supported Software o deep EPIRI Eee 15 Accessalles s eR dai HRS RARA 16 Getting Started Procedure eens 17 Part 1 Getting Started u we a nc ee 19 Chapter 2 Installing the Module iii 21 Unpacking see AI RI eta dene mc meu 23 Attaching Modules to the Computer 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 Driv r ss esse e oe ae ed an seg eats 27 Chapter 3 Wiring Signals selesleeeeeeee Ih 29 Preparing to Wire Signals L n 31 Connecting Analog Input Signals e 32 Connecting Digital I O Signals LL 33 Connecting Digital Input Signals rr 34 Connecting Digital Output Signals LL 35 Chapter 4 Verifyi
53. s 16 8 Isolated Inputs 8 Isolated Outputs Number 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 28 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 4V 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 83 Appendix A Power Physical and Environmental Specifications Table 20 lists the power physical and environmental specifications for the DT9824 module Table 20 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 Cto 55 C Storage temperature range 25
54. section describes the following features of the analog input A D subsystem on the DT9824 module Analog input channels described on page 49 e Input resolution described on page 50 e Input ranges and gains described on page 50 A D sample clock sources 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 in
55. ternal Trigger 37 External Trigger 19 Not Connected Note The outer shell of the connector provides the cable shield to chassis ground 89 Appendix B USB Connector Figure 18 shows the pin locations of the USB connector on the DT9824 module Figure 18 USB Connector Table 25 lists the pin assignments of the digital I O connector Table 25 USB Connector Pin Assignments Pin Signal Description Pin Signal Description 1 USB 5 V 3 USB Data 2 USB Data 4 USB Ground 9 A A D sample clock 50 A D subsystem specifications 80 A D trigger 51 accessories 16 aliasing 51 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 32 error conditions 53 gain 50 input ranges 50 resolution 50 specifications 80 testing continuous operations 41 testing single value operations 40 triggers 51 wiring voltage inputs 32 application wiring digital inputs 34 digital outputs 35 voltage inputs 32 B base clock frequency 64 BaseClockFrequency 64 binary encoding 52 60 buffers 60 inprocess flush 60 C C C programs 15 cables EP333 16 33 EP365 24 25 calibration 68 CGLDepth 61 channel list Index for analog input channels 49 for digital input port 50 channel type differential 61 single ended 61 channel
56. the Analog Input Channels Table 23 summarizes the screw terminal assignments Table 23 Screw Terminal Assignments for the Analog Input Channels Screw Terminals Signal Description 1 Analog Input 2 Not Connected 3 Analog Input 4 Analog Ground 88 Connector Pin Assignments Digital VO Connector Figure 17 shows the pin locations of the digital I O connector on the DT9824 module 1 9 1 oo 00 Do 00 O O 0 OO PISO 37 20 O0 0 O 00 OO DIO DIDO Figure 17 Digital UO Connector Table 24 lists the pin assignments of the digital I O connector Table 24 Digital O 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 Input 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 Ex
57. 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 Measure Foundry Manual UM 19298 and online help These documents describe how to use Measure Foundry to build drag and drop test and measurement applications for Data Translation data acquisition devices without programming DT Open Layers for NET User s Manual UM 22161 For programmers who are developing their own application programs using Visual C or Visual 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 developi
58. to the DT9824 Analog Input Channel E N m M gt Shield Vin Vin Pin 2 is no connect Figure 6 Connecting Voltage Inputs Note 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 32 Wiring Signals 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 7 DT9824 Rear Panel EP333 Cable Assembly Digital 1 O Connector STP37 Figure 7 Connecting the Module to the STP37 Figure 8 shows the layout of the STP37 screw terminal panel and lists the assignments of each screw terminal 33 Chapter 3 LP Digital Input 1 2 Digital Input 1 21 Digital Input 2 3 Digital Input 2 22 Digital Input 3 4 Digital Input 3 23 Digital Input 4 5 Digital Input 4 24 Digital Input 5 6 Digital Input 5 25 Digital Input 6 7 Digital Input 6 26 Digital Input 7 8 Digital Input 7 27 Not Connected 9 Not Connected 28 Figure 8 STP37 Screw Terminal Panel TB1 1 20 18 19 37 T2 8 4 g TB3 33959385 ee Fe S lt E Sf o9 ESE B D Z Z
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