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DT9826 User`s Manual

1. Figure 37 EP355 Screw Terminal Blocks EP355 Screw Terminal Assignments when Attached to Connector J2 Attach the EP355 screw terminal panel to connector J2 on the OEM version of the DT9826 module when you want to access the analog input signals Table 39 lists the screw terminal assignments when the EP355 panel is attached to connector J2 137 Appendix C 138 Table 39 Screw Terminal Assignments on the EP355 Screw Terminal Panel When Attached to Connector J2 Screw Terminal Screw Terminal Terminal Block Signal Description Terminal Block Signal Description 1 TB1 Reserved 2 TB1 Reserved 3 TB1 Analog Ground 4 TB2 Reserved 5 TB2 Analog Ground 6 TB2 Reserved 7 TB3 Analog Ground 8 TB3 Reserved 9 TB3 Analog Ground 10 TB3 Reserved 11 GND Analog Ground 12 TB4 Reserved 13 TB4 Analog Ground 14 TB5 Reserved 15 TB5 Analog Ground 16 TB5 Reserved 17 TB5 Analog Ground 18 TB6 Reserved 19 TB6 Analog Ground 20 TB6 Analog In 7 21 TB7 Analog Ground 22 TB7 Analog In 6 23 TB7 Analog Ground 24 TB7 Analog In 5 25 TB8 Analog Ground 26 TB8 Analog In 4 27 TB8 Analog Ground 28 TB9 Analog In 3 29 TB10 Analog Ground 30 TB10 Analog In 2 31 TB10 Analog Ground 32 TB9 Analog In 1 33 TB9 Analog Ground 34 TB9 Analog In 0 35 TB1 Reserved 36 GND Analog Ground 37 TB1 Analog Ground 38 TB2 Reserved 39 TB2 Analog Ground 40 TB2 Reserved 41 TB3 Analog Ground 42 TB3 Res
2. 32 86 Supported Device Driver Capabilities Thermocouple and RTD Support Table 15 DT9826 Thermocouple and RTD Support Options DT9826 Thermocouple Support SupportsThernocouple A D D A DIN DOUT C T QUAD TACH RTD Support SupportsRTD Resistance Support ReturnsOhms Voltage Converted to Temperature in Hardware SupportsTemperatureDatalnStream Supported Thermocouple Types ThermocoupleType Supported RTD Types RTDType SupportsCjcSourcelnternal Supports CJC Source Internally in Hardware 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 16 DT9826 IEPE Support Options DT9826 Software Programmable AC Coupling SupportsACCoupling A D D A DIN DOUT C T QUAD TACH 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 87 C
3. Maximum Channel Gain List Depth CGLDepth 208 1 1 0 Simultaneous Sample and Hold Support SupportsSimultaneousSampleHold Yes Channel List Inhibit SupportsChannelListlnhibit a Analog input channels are numbered 0 to 15 You can read the tachometer input by specifying channel 16 in the input channel list You can read counter timer 0 by specifying channel 17 in the input channel list You can read counter timer 1 by specifying channel 18 in the input channel list You can read the digital input port by specifying channel 19 in the input channel list Gain Table 12 DT9826 Gain Options DT9826 A D D A DIN DOUT C T QUAD TACH Programmable Gain Support SupportsProgrammableGain Yes Number of Gains NumberOfSupportedGains 1 1 1 0 Gains Available SupportedGains 1 1 1 85 Chapter 6 Ranges Table 13 DT9826 Range Options DT9826 Number of Voltage Ranges NumberOfRanges A D D A DIN DOUT C T QUAD TACH Available Ranges SupportedVoltageRanges 10V Current Output Support SupportsCurrentOutput Resolution Table 14 DT9826 Resolution Options DT9826 Software Programmable Resolution SupportsSoftwareResolution A D D A DIN DOUT C T QUAD TACH Number of Resolutions NumberOfResolutions Available Resolutions SupportedResolutions 24
4. 141 Appendix C Table 41 EP356 Connector J1 Pin Assignments cont Using Connector J2 on the EP356 Use connector J2 on the EP356 accessory panel to attach counter timer tachometer or external trigger signals You can access the pins on the connector J1 either by using the STP37 screw terminal panel and EP333 cable available from Data Translation or by building your own cable panel To build your own cable panel refer to page 115 for information about the required mating connectors Table 42 lists the pin assignments for connector J2 on the EP356 accessory panel Pin Signal Description Pin Signal Description 7 Digital Input 6 26 Digital Output 6 8 Digital Input 7 27 Digital Output 7 9 Reserved 28 Reserved 10 Reserved 29 Reserved 11 Reserved 30 Reserved 12 Reserved 31 Reserved 13 Reserved 32 Reserved 14 Reserved 33 Reserved 15 Reserved 34 Reserved 16 Reserved 35 Reserved 17 Digital Ground 36 Reserved 18 Digital Ground 37 Digital Ground 19 No Connect Table 42 EP356 Connector J2 Pin Assignments Pin Signal Description Pin Signal Description 1 Reserved 20 Reserved 2 Reserved 21 Reserved 3 Reserved 22 Reserved 4 Reserved 23 Reserved 5 Digital Ground 24 Digital Ground 6 Reserved 25 Reserved 7 Tachometer 26 External ADC Trigger 8 Counter 0 Clock 27 Digital Ground 9 Counter 0 Out 28 Counter 0 Gate 142 W
5. 98 Using the Calibration Utility Calibrating the Analog Input Subsystem Calibration 99 Chapter 8 Using the Calibration Utility The DT9826 module is 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 DT9826 module every six months using the DT9826 Calibration Utility Note Ensure that you installed the DT9826 Device Driver prior to using the DT9826 Calibration Utility Start the DT9826 Calibration Utility as follows 1 Click Start from the Task Bar 2 Select Programs Data Translation Inc Calibration DT9826 Calibration Utility The main menu of the DT9826 Calibration Utility appears 3 Select the module to calibrate and then click OK Once the DT9826 Calibration Utility is running you can calibrate the analog input circuitry either automatically or manually described on page 101 100 Calibration Calibrating the Analog Input Subsystem This section describes how to use the DT9826 Calibration Utility to calibrate the analog input subsystem of a DT9826 module The DT9826 module has separate calibration for each A D input channel You can choose to calibrate either an individual channel or all channels on the module Connecting a Precision Voltage Source To calibrate the analog input circuitry you need to connect an external 49 3750 V preci
6. Reference trigger source Specify a positive low to high transition threshold trigger if you want to trigger when the signal rises above a threshold level or a negative high to low transition threshold trigger if you want to trigger when the signal falls below a threshold level Threshold channel Specify any one of the analog input channels as the threshold input channel e Threshold level Specify a value between 10 V and 10 V as the threshold level Data Format and Transfer The DT9826 module uses offset binary data encoding where 000000 represents 10 V and FFFFFFh represents 10 V Use software to specify the data encoding as binary The ADC outputs FFFFFFh for above range signals and 000000 for below range signals Before you begin acquiring data you must allocate buffers to hold the data An event is raised whenever a buffer is filled This allows you to move and or process the data as needed Note We recommend that you allocate a minimum of two buffers that can contain even multiples of 256 samples 67 Chapter 5 Data is written to multiple allocated input buffers continuously when no more empty buffers are available the operation stops The data is gap free Error Conditions The DT9826 module can report the following errors Input over sample Indicates that the input sample clock rate is too fast This error is reported if a new sample clock occurs while the ADC is busy performing a con
7. Should you run into problems installing or using a DT9826 module our Technical Support Department is available to provide technical assistance Refer to Chapter 7 starting on page 93 for information on how to contact the Technical Support Department If you are outside the U S 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 DT9826 Hardware Features oo cca cee ere m eee s per Re Ee Res 14 supported SOLIDO es sedes t Re Dre tr pe reas 16 JADUGISDIBS oii ead Dai REA eX EPA PICO A G4 TAPEE SERE 17 sting Stared PROCEDA Lco e ebbe bre i c RIEN e ee en re redde 19 13 Chapter 1 DT9826 Hardware Features The DT9826 shown in Figure 1 is a high performance multifunction data acquisition module for the USB Ver 2 0 or Ver 1 1 bus AD Ch13 DAC Cik y h9 DAC Ch1 gt 6 Figure 1 DT9826 Module The key hardware features of the DT9826 module are as follows e Available either installed in a metal BNC connection box or as a board level OEM version that you can install in your own custom application Powered by the USB bus Simultaneous operation of analog input digital I O counter timer and tachometer subsystems Analog input subsystem 16 single ended simultaneous analog input channels 24 bit Delta Sigma A D converter per channel Input range of 10 V A20 location channe
8. 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 your 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 module Place in a secure shipping container 3 Return the module 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 97 Chapter 7
9. UserGate TO Counter Y UserOur Timers 8 bit Digital In l 8 bit Digital Out Figure 21 Block Diagram of the DT9826 Module 60 Principles of Operation Analog Input Features This section describes the following features of analog input A D operations on the DT9826 module Input resolution described below Analog input channels described below Input ranges described on page 63 Input sample clock sources described on page 63 Analog input conversion modes described on page 64 Input triggers described on page 66 Data format and transfer described on page 67 Error conditions described on page 68 Input Resolution Input resolution is fixed at 24 bits you cannot specify the resolution in software Analog Input Channels The DT9826 supports 16 analog inputs with a Delta Sigma converter per channel You can connect the analog input channels in single ended mode In this mode the source of the input should be close to the module and all the input signals are referred to the same common ground Note To maintain simultaneous operation all analog input connections must have the same lead lengths The DT9826 module can acquire data from a single analog input channel or from a group of analog input channels Analog input channels are numbered 0 to 15 The following subsections describe how to specify the channels Specifying a Single Analog Input Channel The simp
10. 9 Q o o o 9 o Figure 30 Layout of the 68 Pin Analog Input Connector 120 Connector Pin Assignments Table 33 lists the pin assignments of the Analog Input connector J2 on the OEM version of the DT9826 module Table 33 Pin Assignments of the Analog Input Connector J2 on the OEM Version of the DT9826 Module J2 Pin J2 Pin Assignment Signal Description Assignment Signal Description 1 Reserved 35 Reserved 2 Analog Ground 36 Analog Ground 3 Analog Ground 37 Analog Ground 4 Reserved 38 Reserved 5 Analog Ground 39 Analog Ground 6 Reserved 40 Reserved 7 Analog Ground 41 Analog Ground 8 Reserved 42 Reserved 9 Analog Ground 43 Analog Ground 10 Reserved 44 Reserved 11 Analog Ground 45 Analog Ground 12 Reserved 46 Reserved 13 Analog Ground 47 Analog Ground 14 Reserved 48 Reserved 15 Analog Ground 49 Analog Ground 16 Reserved 50 Reserved 17 Analog Ground 51 Analog Ground 18 Reserved 52 Reserved 19 Analog Ground 53 Analog Ground 20 Analog Input 7 54 Analog Input 15 21 Analog Ground 55 Analog Ground 22 Analog Input 6 56 Analog Input 14 23 Analog Ground 57 Analog Ground 24 Analog Input 5 58 Analog Input 13 25 Analog Ground 59 Analog Ground 26 Analog Input 4 60 Analog Input 12 27 Analog Ground 61 Analog Ground 28 Analog Input 3 62 Analog Input 11 29 Analog Ground 63 Analog Ground 121 Appendix B Tab
11. Wiring Signals to the BNC Connection Box Connecting Counter Timer Signals The BNC connection box provides two counter timer channels that you can use to perform the following operations Event counting Up down counting Frequency measurement Pulse width period measurement Edge to edge measurement Continuous edge to edge measurement Pulse output continuous one shot and repetitive one shot This section describes how to connect counter timer signals Refer to page 72 for more information about using the counter timers Event Counting Figure 11 shows how to connect counter timer signals to the Cntr Timer Analog Out Clk Trig connector on the BNC connection box to perform an event counting operation This example uses counter timer 0 with an external gate The counter counts the number of rising edges that occur on the Counter 0 Clock input when the Counter 0 Gate signal is in the active state as specified by software Refer to Chapter 5 for more information Digital Ground pin 5 Signal Source 1 Counter 0 Clock gt Q pins Ea in 28 Counter 0 Gate D P External Gating Switch 3 MU RES qp pin 29 Digital Ground Cntr Timer Connector Figure 11 Connecting Counter Timer Signals to the BNC Connection Box for an Event Counting Operation Using an External Gate 41 Chapter 3 42 Figure 12 shows how to connect counter timer signals to the Cntr Timer Analo
12. OEM version J2 AMP Tyco 6 104068 8 AMP Tyco 3 111196 4 J3 AMP Tyco 6 104068 8 AMP Tyco 3 111196 4 EP353 accessory panel J1 AMP Tyco 5102321 6 AMP Tyco 1658622 6 J2 AMP Tyco 5747375 8 AMP Tyco 5 747917 2 EP356 accessory panel J1 AMP Tyco 5747301 8 AMP Tyco 5 747916 2 J2 AMP Tyco 5747301 8 AMP Tyco 5 747916 2 a The mating PCB receptacle is AMP Tyco 6 104078 3 115 Appendix A 116 Regulatory Specifications Table 30 lists the regulatory specifications for the DT9826 module Table 30 Regulatory Specifications Feature 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 Safety UL CSA Connector Pin Assignments External USB Cmte batt cos a ee eae eee em eve e ee tet e ttt eti Le a 118 Analog Inprat GODDOCIDE Lee Ai RRA CI C nee ae eed n 119 Digital I O Connector cuco rre DR Ret Re RP RU A XR E EPOR RUE ER 123 117 Appendix B External USB Connector Figure 29 shows the layout of the external USB connector J1 on the DT9826 BNC connection box and on the OEM version of the DT9826 module Figure 29 Layout of the USB Connector Table 31 lists the pin assignments for the USB connector J1 on the DT9826 module Table 31 Pin Assignments for the USB Connector J1 on the DT9826 Module J
13. SupportsOneShot 90 SupportsOneShotRepeat 90 SupportsPosExternalTTLTrigger 88 SupportsPosThresholdTrigger 88 SupportsProgrammableGain 85 SupportsRateGenerate 90 SupportsRisingEdge 91 SupportsSimultaneousClocking 89 SupportsSimultaneousSampleHold 85 SupportsSimultaneousStart 83 SupportsSingleEnded 85 SupportsSingleValue 83 SupportsSoftwareTrigger 88 SupportsStaleDataFlag 91 SupportsUpDown 90 SupportsVariablePulseWidth 90 synchronizing tachometer and analog input data 63 T tachometer input 70 falling edge type 91 features 70 149 Index 150 in analog input channel list 62 rising edge type 91 specifications 111 stale data flag 91 wiring 46 technical support 96 threshold trigger 88 throughput maximum 89 minimum 89 transferring data analog input 67 triggered scan number of scans per trigger 84 retrigger frequency 84 triggers analog input 66 external 67 external negative digital 88 external positive digital 88 negative analog threshold 88 positive analog threshold 88 software 66 88 specifications 112 troubleshooting procedure 94 technical support 96 troubleshooting table 94 TTL trigger 67 U units counter timer 72 unpacking 25 up down counting 75 90 wiring 42 USB cable 26 27 USB connector 118 USB expansion hub 27 V variable pulse width 90 Visual Basic for NET programs 16 Visual Basic programs 16 Visual C programs 16 Visual C programs 16 voltage ranges 63 86 number of 86 W w
14. of FSR C 2 ppm Monotonicity 1 LSB ESD protection Arc 8 kV Contact 4 kV Reference 1 250 V internal 104 Specifications Table 22 Analog Input Specifications cont Feature Specifications 3 dB Frequency A D sample frequency 0 216 Effective Number of Bits ENOB 14 1 bits Sampling at 40 kHz with a 1 kHz sine wave at 0 37 dB below full scale IBF Signal to noise plus distortion SINAD 86 48 dB Spurious free dynamic range SFDR referenced to full scale a ENOB SINAD 1 76 IBF 6 02 Refer to page 106 for more information about ENOBs 105 Appendix A Measuring Dynamic Performance ENOB E About Hook Up Bain h x Frequency 1 X Frequency LM 20000 1 OdB 024 Point FFT using a DT9826 02 FFT plots show the dynamic performance of the DT9826 Many users believe that a 24 bit A D device provides 24 bit accuracy or at least close to that accuracy But when measuring a dynamic signal with frequency components above DC factors such as noise harmonic distortion and phase shift particularly at low bandwidths as well as the accuracy of the signal generator itself degrade the accuracy of the measurement Layout of the critical circuit etch spacing between noise generating and noise sensitive devices as well as analog and digital etch patterns and thermal effects from one circuit to another are all culprits in
15. Note that in one shot mode the internal C T clock is more useful than an external C T clock refer to page 73 for more information about the C T clock sources Using software specify the counter timer mode as one shot the clock source as internal recommended the clock divider the polarity of the output pulse high to low transition or low to high transition and the active gate type rising edge or falling edge Refer to page 74 for more information about pulse output types and to page 73 for more information about gate types Note In the case of a one shot operation a duty cycle of 100 is set automatically Make sure that the signals are wired appropriately Refer to page 45 for an example of connecting a one shot application Principles of Operation Repetitive One Shot Use repetitive one shot mode to generate a pulse output signal from the counter s output line whenever the specified edge is detected on the counter s gate signal You can use this mode to clean up a poor clock input signal by changing its pulse width and then outputting it The module continues to output pulses until you stop the operation Note that any gate signals that occur while the pulse is being output are not detected by the module The period of the output pulse is determined by the C T clock source either internal using a clock divider or external Note that in repetitive one shot mode the internal C T clock is more useful than an ext
16. Out Clk Trig connector allows you to access the counter timer tachometer and external trigger signals on the BNC connection box Table 4 lists the pin assignments for the Cntr Timer Analog Output Clk Trig connector on the BNC connection box You can use the STP37 screw terminal panel and EP333 cable with this connector to make wiring easier Table 4 Cntr Timer Analog Out CIK Trig Connector and STP37 Pin Assignments Pin Signal Description Pin Signal Description 1 Reserved 20 Reserved 2 Reserved 21 Reserved 3 Reserved 22 Reserved 4 Reserved 23 Reserved 5 Digital Ground 24 Digital Ground 6 Reserved 25 Reserved 7 Tachometer 26 External ADC Trigger 8 Counter 0 Clock 27 Digital Ground 9 Counter 0 Out 28 Counter 0 Gate 10 Counter 1 Clock 29 Digital Ground 11 Counter 1 Out 30 Counter 1 Gate 12 Reserved 31 Digital Ground 13 Reserved 32 Reserved 14 Reserved 33 Digital Ground 15 Reserved 34 Reserved 16 Reserved 35 Digital Ground 17 Reserved 36 Reserved 18 Digital Ground 37 Digital Ground 19 No Connect Wiring Signals to the BNC Connection Box Connecting Analog Input Signals The BNC connection box supports voltage inputs You can connect analog input signals to a BNC connection box in single ended mode In this mode the source of the input should be close to the module all the input signals are referred to the same common ground Figure 7 shows how to con
17. Timers in the Analog Input Channel List The DT9826 module allows you to read the value of the 32 bit counter timer channels using the analog input channel list This feature is particularly useful when you want to correlate the timing of analog and counter timer events To read counter timer channel 0 specify channel 17 in the analog input channel list To read counter timer 1 specify channel 18 in the analog input channel list You can enter the channel number anywhere in the list The counter timer channel 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 counter timers if you specify them this way Refer to page 72 for more information about counter timer operations Specifying the Digital Input Port in the Analog Input Channel List The DT9826 module allows you to read the digital input port using the analog input channel list This feature is particularly useful when you want to correlate the timing of analog and digital events To read the digital input port specify channel 19 in the analog input channel list You can enter this channel anywhere in the 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 yo
18. analog input data stream you might see results similar to the following Principles of Operation Table 5 An Example of Reading the Tachometer Input as Part of the Analog Input Data Stream Tachometer Time A D Value Input Value Status of Operation 10 5002 0 Operation started but is not complete 20 5004 0 Operation not complete 30 5003 0 Operation not complete 40 5002 12373 Operation complete 50 5000 12373 Next operation started but is not complete 60 5002 12373 Operation not complete 70 5004 12373 Operation not complete 80 5003 14503 Operation complete 90 5002 14503 Next operation started but is not complete Using the count that is returned from the tachometer input you can determine the following e Frequency of a signal pulse the number of periods per second You can calculate the frequency as follows Frequency 12 MHz Number of counts 1 where 12 MHz is the internal counter timer clock frequency Period of a signal pulse You can calculate the period as follows Period 1 Frequency Period Number of counts 1 12 MHz where 12 MHz is the internal counter timer clock frequency For example if the count is 21 the measured frequency is 600 KHz 12 MHz 20 71 Chapter 5 Counter Timer Features This section describes the following features of counter timer C T operations C T channels described below C T clock sources described on pa
19. device driver and other software for the module Connecting Directly to the USB Ports To connect a DT9826 module directly to a USB port on your computer do the following 1 Attach one end of the USB cable to the USB port on the module 2 Attach the other end of the USB cable to one of the USB ports on the host computer as shown in Figure 3 The operating system automatically detects the USB module and starts the Found New Hardware wizard DT9826 Modu USB Ports Host Computer H USB Cable d Figure 3 Attaching the Module to the Host Computer 26 Setting Up and Installing the Module 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 Install this driver software anyway The LED on the module turns green 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 The LED on the module turns green Note Windows 7 finds the device automatically Repeat these steps to attach another DT9826 module to the host computer if desired Connecting to an Expansion Hub Expansion hubs are powered by their own external power supply The practic
20. for more information about triggers The conversion rate is determined by the frequency of the input sample clock refer to page 63 for more information about the input sample clock The sample rate which is the rate at which a single entry in the channel list is sampled is the same as the conversion rate due to the simultaneous nature of the module Using software you can stop a scan by performing either an orderly stop or an abrupt stop In an orderly stop the module finishes acquiring the current buffer stops all subsequent acquisition and transfers the acquired data to host memory any subsequent triggers are ignored In an abrupt stop the module stops acquiring samples immediately the current buffer is not completely filled it is returned to the application only partially filled and any subsequent triggers are ignored To select continuous scan mode use software to specify the following parameters Specify the data flow as Continuous Specify the clock source as internal and specify the clock frequency refer to page 63 65 Chapter 5 Specify the start trigger refer to page 66 Specify the reference trigger refer to page 67 Specify the post trigger scan count the number of post trigger samples to acquire after the reference trigger occurs Figure 23 illustrates continuous scan mode using a start and reference trigger with a channel list of four entries channel 0 through channel 3 In this example
21. panel or an EP353 accessory panel to an STP37 screw terminal panel Overview Getting Started Procedure The flow diagram shown in Figure 2 illustrates the steps needed to get started using the DT9826 module This diagram is repeated in each Getting Started chapter the shaded area in the diagram shows you where you are in the procedure Set Up and Install the Module see Chapter 2 starting on page 23 Wire Signals to the BNC Connection Box see Chapter 3 starting on page 31 Verify the Operation of the Module see Chapter 4 starting on page 47 Figure 2 Getting Started Flow Diagram 19 Chapter 1 20 Part 1 Getting Started Setting Up and Installing the Module uon qm 25 Attaching Modules to the Computer ecs 06400 esee ehe eek dee het 26 Configuring the 919326 Device Driver coincida 29 23 Chapter 2 e Set Up and Install the Module oN this chapter M Wire Signals to the BNC Connection Box see Chapter 3 starting on page 31 Verify the Operation of the Module see Chapter 4 starting on page 47 Note The DT9826 module is factory calibrated If you decide that you want to recalibrate the analog input circuitry refer to the instructions on Chapter 8 24 Setting Up and Installing the Module Unpacking Open the shipping box and verify that the following items are present e BNC connection box or OEM version of the DT9826 m
22. pre trigger analog input data is acquired when the start trigger is detected When the reference trigger occurs the specified number of post trigger samples 3 in this example are acquired Chan 3 Chan 2 Chan 1 Chan 0 Chan 3 Chan 2 Chan 1 Chan 0 Input Sample Clock rx d Pre trigger data acquired Chan 3 Chan 2 Chan 1 Chan 0 Post Trigger Scan Count 3 Chan 3 Chan 2 Chan 1 Chan 0 Chan 3 Chan 2 Chan 1 Chan 0 Start Trigger occurs Input Triggers Figure 23 Continuous Scan Mode u 3 Post trigger samples acquired Reference Trigger occurs A trigger is an event that occurs based on a specified set of conditions On the DT9826 modules you can specify a start trigger source and a reference trigger source Pre trigger data acquisition starts when the start trigger event occurs When the reference trigger event occurs pre trigger data acquisition stops and post trigger acquisition starts Post trigger acquisition stops when the number of samples you specify for the post trigger scan count has been reached Refer to page 65 for more information Start Trigger Sources The DT9826 module supports the following sources for the start trigger 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 start trigg
23. the latest installation and configuration information available 3 Check that your system meets the requirements stated in the README file on the OMNI CD 4 Check that you have installed your hardware properly using the instructions in Chapter 2 5 Check that you have installed and configured the device driver properly using the instructions in Chapter 2 6 Check that you have wired your signals properly using the instructions in Chapter 3 7 Search the DT Knowledgebase in the Support section of the Data Translation web site at www datatranslation com for an answer to your problem 8 Visit the product s page on the Data Translation web site for the latest tips white papers product documentation and software fixes 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 96 Table 21 Troubleshooting Problems the device driver Symptom Possible Cause Possible Solution Module is not You plugged the module into From the Control Panel System Hardware Device recognized your computer before installing 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 dri
24. 1 a digital line is low if its value is 0 On power up or reset a low value 0 is output from each of the digital output lines Note Pin 2 on connector J3 is available if you want to supply your own 5 V power supply to the digital output circuit This allows you to maintain the state of the digital output lines if the USB cable is disconnected Operation Modes The DT9826 module supports the following digital I O operation modes Single value operations are the simplest to use but offer the least flexibility and efficiency You use software to specify the digital I O port and a gain of 1 the gain is ignored Data is then read from or written to all the digital I O lines For a single value operation you cannot specify a clock or trigger source Single value operations stop automatically when finished you cannot stop a single value operation Continuous digital input takes full advantage of the capabilities of the DT9826 module Enter the digital input port all 8 digital input lines as channel 19 in the analog input channel list refer to page 80 for more information You can specify a clock source scan mode trigger source buffer and buffer wrap mode for the digital input operation The input sample clock internal or external paces the reading of the digital input port as well as the acquisition of the analog input tachometer input and counter timer channels refer to page 63 for more information 80 D Suppo
25. 1 Pin J1 Pin Assignment Signal Description Assignment Signal Description 1 USB 5 V 3 USB Data 2 USB Data 4 USB Ground 118 Connector Pin Assignments Analog Input Connector The following sections describe the analog input connector on the DT9826 BNC connection box and on the OEM version of the DT9826 module DT9826 BNC Connection Box Table 32 lists the pin assignments for the Analog Input connector on the DT9826 BNC connection box Table 32 Pin Assignments of the Analog Input Connector on the DT9826 BNC Connection Box Pin Signal Description Pin Signal Description 19 No Connect 37 Reserved 18 Reserved 36 Analog Ground 17 Analog Ground 35 Reserved 16 Reserved 34 Reserved 15 Reserved 33 Reserved 14 Reserved 32 Reserved 18 Reserved 31 Reserved 12 Reserved 30 Reserved 11 Reserved 29 Reserved 10 Reserved 28 Reserved 9 Reserved 27 Analog In 15 8 Analog Input 7 26 Analog In 14 7 Analog Input 6 25 Analog In 13 6 Analog Input 5 24 Analog In 12 5 Analog Input 4 23 Analog In 11 4 Analog Input 3 22 Analog In 10 3 Analog Input 2 21 Analog In 9 2 Analog Input 1 20 Analog In 8 1 Analog Input O 119 Appendix B OEM Version of DT9826 Module Figure 30 shows the layout of the 68 pin Analog Input connector J2 on the OEM version of the DT9826 module 9 o o Q Q Q 9 Q Q 9 Qo o
26. 12 Internal Clock Specifications 0 0 eee eee eee 113 Power Physical and Environmental Specifications 114 Mating Connector Specifications 2 6 6 cee ees 115 Regulatory Specifications 0 eee cece eee eee 116 Appendix B Connector Pin Assignments 0000 cee e ee o 117 External USB Connector cuidas tea AREE EE ONERE 118 Analog Input Connector seriestart e aa d eai e en 119 DT9826 BNC Connection Box 22 0 0 ccc cence n eee e nee 119 OEM Version of DT9826 Module 00 cece cette eens 120 Digital I O Connector coe eec a eee PINE Eee Neri dete 123 DT9826 BNC Connection Box sseseseeeeeeeeee ehe 123 OEM Version of the DT9826 Module 0 cece cece eee eee eens 124 Cntr Timer Analog Out Clk Trig Connector 00 0 e eee 127 Appendix C Wiring Signals to the OEM Version of the Module 129 Preparing to Wire Signals cocinar bole ete aie Mote deb denne tede da 130 Wiring Recommendations sss ee 130 Wiring Methods itt ci esse e co tst tu ode ite ied tss 130 Using the Connectors on the OEM Module n n nanna nananana rnanera 132 Using an EP353 Accessory Panel 0 0666 133 Using Connector J1 on the EP353 6 66 133 Using Connector J2 on the EP353 0 eee ee 135 Using an EP355 Screw Terminal Panel 0000s 136 EP355 Screw Terminal Blocks 0 0 cece cence eh 137 EP355 Screw Terminal Assignments when Attached to C
27. 5 gains 85 I O channels 85 resolutions 86 scans per trigger 84 single ended channels 85 voltage ranges 86 NumberOfChannels 85 NumberOfRanges 86 NumberOfResolutions 86 NumberOfSupportedGains 85 O OEM version connector J2 pin assignments 119 connector J3 pin assignments 123 one shot pulse output 78 90 online help 49 Open Layers Control Panel applet 95 operation modes continuous analog input scan mode 65 continuous digital input 80 single value analog input 65 single value digital I O 80 output pulses 45 77 78 79 90 testing 55 P period measurement 77 wiring 43 physical specifications 114 pin assignments Analog Input connector on BNC box 36 Cntr Timer Analog Out Clk Trig connector on BNC box 38 127 Digital I O connector on BNC box 37 J1 on the EP353 133 J1 on the EP356 141 J2 on OEM version 119 J2 on the EP353 135 J2 on the EP356 142 J3 on OEM version 123 ports digital I O 80 positive analog threshold trigger 88 post trigger acquisition mode 83 power specifications 114 preparing to wire signals 33 pulse output one shot 78 rate generation 77 repetitive one shot 79 testing 55 types 74 wiring 45 pulse width 74 76 wiring 43 Q Quick DataAcq application 16 running 49 quickDAQ 16 Index R ranges analog input 63 number of 86 rate generation 77 90 recommendations for wiring 33 130 reference trigger 67 related documents 10 repetitive one shot pulse output 79 90 resolution a
28. Analog In 14 7 Analog Input 6 25 Analog In 13 6 Analog Input 5 24 Analog In 12 5 Analog Input 4 23 Analog In 11 4 Analog Input 3 22 Analog In 10 3 Analog Input 2 21 Analog In 9 2 Analog Input 1 20 Analog In 8 1 Analog Input O 36 Wiring Signals to the BNC Connection Box Digital I O Connector The Digital In Out connector allows you to access the digital I O signals Table 3 lists the pin assignments for the Digital In Out connector on the BNC connection box You can use the STP37 screw terminal panel and EP333 cable with the Digital In Out connector to make wiring easier Table 3 Digital In Out Connector and STP37 Pin Assignments Pin Signal Description Pin Signal Description 1 Digital Input O 20 Digital Output O 2 Digital Input 1 21 Digital Output 1 3 Digital Input 2 22 Digital Output 2 4 Digital Input 3 23 Digital Output 3 5 Digital Input 4 24 Digital Output 4 6 Digital Input 5 25 Digital Output 5 7 Digital Input 6 26 Digital Output 6 8 Digital Input 7 27 Digital Output 7 9 Reserved 28 Reserved 10 Reserved 29 Reserved 11 Reserved 30 Reserved 12 Reserved 31 Reserved 18 Reserved 32 Reserved 14 Reserved 33 Reserved 15 Reserved 34 Reserved 16 Reserved 35 Reserved 17 Digital Ground 36 Reserved 18 Digital Ground 37 Digital Ground 19 No Connect 37 Chapter 3 38 Cntr Timer Analog Output CIk Trig Connector The Cntr Timer Analog
29. Analog Input 1 6 Analog Ground 7 Analog Input 2 8 Analog Input 10 9 Analog Ground 10 Analog Input 11 11 Analog Input 3 12 Analog Ground 13 Analog Input 4 14 Analog Input 12 15 Analog Ground 16 Analog Input 13 17 Analog Input 5 18 Analog Ground 19 Analog Input 6 20 Analog Input 14 21 Analog Ground 22 Analog Input 15 23 Analog Input 7 24 Analog Ground 25 Reserved 26 Reserved 134 Wiring Signals to the OEM Version of the Module Using Connector J2 on the EP353 Use EP353 connector J2 to attach analog input signals to the EP353 accessory panel You can access the pins on connector J2 either by using the EP360 cable and STP37 screw terminal panel available from Data Translation or by building your own cable panel Refer to page 115 for information about the required mating connectors Table 38 lists the pin assignments for connector J2 on the EP353 accessory panel Table 38 EP353 Connector J2 Pin Assignments Pin Signal Description Pin Signal Description 1 Analog Input 0 20 Analog In 8 2 Analog Input 1 21 Analog In 9 3 Analog Input 2 22 Analog In 10 4 Analog Input 3 23 Analog In 11 5 Analog Input 4 24 Analog In 12 6 Analog Input 5 25 Analog In 13 7 Analog Input 6 26 Analog In 14 8 Analog Input 7 27 Analog In 15 9 Reserved 28 Reserved 10 Reserved 29 Reserved 11 Reserved 30 Reserved 12 Reserved 31 Reserved 18 Reserved 32 Reserved 14 Reserved 33 Reserved 15 Reser
30. Clock Divider MinExtClockDivider Maximum Frequency MaxFrequency 41 666 kHz 24 MHz Minimum Frequency MinFrequency 10 Hz 0 011176 Hz 89 Chapter 6 Counter Timers Table 19 DT9826 Counter Timer Options DT9826 A D D A DIN DOUT C T QUAD TACH Cascading Support SupportsCascading Event Count Mode Support SupportsCount Yes Generate Rate Mode Support SupportsRateGenerate Yes One Shot Mode Support SupportsOneShot Yes Repetitive One Shot Mode Support SupportsOneShotRepeat Yes Up Down Counting Mode Support SupportsUpDown Yes Edge to Edge Measurement Mode Support SupportsMeasure Yes Continuous Edge to Edge Measurement Mode Support SupportsContinuousMeasure Yes High to Low Output Pulse Support SupportsHighToLowPulse Yes Low to High Output Pulse Support SupportsLowToHighPulse Yes Variable Pulse Width Support SupportsVariablePulseWidth Yes None internal Gate Type Support SupportsGateNone Yes High Level Gate Type Support SupportsGateHighLevel Yes Low Level Gate Type Support SupportsGateLowLevel Yes High Edge Gate Type Support SupportsGateHighEdge Yes Low Edge Gate Type Support SupportsGateLowEdge Yes Level Change Gate Type Support SupportsGateLevel Clock Falling Edge Type SupportsClockFalling Yes Clock Rising Edge Type SupportsClockRising Yes Gate Falling Edge Type SupportsGat
31. DATA TRANSLATION UM 24412 A DT9826 User s Manual First Edition April 2011 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 2011 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 ISO Channel Measure Foundry 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 Inter
32. For example a duty cycle of 50 indicates that half of the total pulse output is low and half of the total pulse output is high You specify the duty cycle in software Figure 25 illustrates a low to high pulse with a duty cycle of approximately 30 Active Pulse Width a high pulse low pulse m Total Pulse Period Figure 25 Example of a Low to High Pulse Output Type Counter Timer Operation Modes DT9826 modules support the following counter timer operation modes Event counting Up down counting Frequency measurement Edge to edge measurement Continuous edge to edge measurement Rate generation One shot Repetitive one shot Note The active polarity for each counter timer operation mode is software selectable 74 Principles of Operation You can read the value of the counter timer in the analog input stream by specifying channels 17 and 18 refer to page 62 for more information The following subsections describe these modes in more detail Event Counting Use event counting mode if you want to count the number of rising edges that occur on the counter s clock input when the counter s gate signal is active low level or high level Refer to page 73 for information about specifying the active gate type You can count a maximum of 4 294 967 296 events before the counter rolls over to 0 and starts counting again Using software specify the counter timer mo
33. Format and Transfer oooococccoccocc nen een eens 67 Error Conditions 46 0 essa SOS a a 68 Tachometer Input Features o oooooooooooccorr e enn 70 Counter Timer Features 72 C rCGhannels 25 225 crt atraer DROP ERG bib 72 C T Clock Sources ui EE EHE AR ECL xr stb hs 73 Gate Types i Se ea rtc See a p A AA 73 Contents Pulse Output Types and Duty Cycles 0 ooo eee eee 74 Counter Timer Operation Modes 000 ec e eee eee eee 74 Event COUTO xo tcs Rate ate meat lated normam taedio arte state tas 75 Up Down Counting sse e en 75 Frequency Measurement o 76 Edge to Edge Measurement 6 occ 76 Continuous Edge to Edge Measurement 0 00000 e eee eee 77 Rate Generation ser eese rd Ra EE RU Ade A snag tarde bade PANE PES 77 Ornie 5hot utis CR NOE ACRI ADA SENI ESAE RR i 78 Repetitive One Shot o res eee aee are Sees 79 Digital 1 O Features i sicexete see meni teases mega seule bee ee e aa d eon e 80 Digital I O ines uoce rettet Sea re cU xi et a Bie itte acinis 80 Operation Modes eret rer A A AA AAA A eei 80 Chapter 6 Supported Device Driver Capabilities llus 81 Data Flow and Operation Options 0 6 6 ne eene 83 A es Duel cu MEE MIELE M e et oS TE PET SA a 84 Triggered Scan Mode ise eben ewe ecu seeded nee A 84 Data Encoding sse t e eese REESAG essen SE Ge Leda ex te 84 Channels e so m t tex ise 85 e E 85
34. Input Specifications Table 24 lists the specifications for the tachometer input on the DT9826 module Table 25 Tachometer Input Specifications Feature Specifications Number of channels 1 Resolution 31 bits per channel Input voltage range 30 V Threshold voltage x2 V with 0 5 V hysteresis Maximum input frequency 1MHz Minimum pulse width high low minimum amount of time it takes a C T to recognize an input pulse 0 4 us Clock frequency for tachometer measurements 12 MHz 83 ns resolution 111 Appendix A External Trigger Specifications 112 Table 26 lists the specifications for the external A D trigger on the DT9826 module Table 26 External A D Trigger Specifications Feature Specifications Trigger sources Internal Software initiated External Software selectable Input type Edge sensitive Logic family LVTTL 5 V tolerant Inputs Input logic load Input termination High input voltage Low input voltage Low input current 1 LVTTL 22 kQ pull up to 3 3 V 2 0 V minimum 0 8 V maximum 0 25 mA maximum Minimum pulse width High 500 ns Low 500 ns Triggering modes Single scan Yes Continuous scan Yes Specifications Internal Clock Specifications Table 27 lists the specifications for the internal A D clock on the DT9826 module Table 27 Internal A D Clock Specifications Feat
35. Ranges in naa ma pA i vate Lee e eee ee edu vive e qur C e sub ad 86 Resol tlOn o4 ee A o dete e aus e uum ts ada ee 86 Thermocouple and RTD Support sssssssssssese e eee 87 TIEPE SSupport c tede ere eed pe adrede tdi haw poole A 87 Jrigeersui 0 pee E A petita UO TP Ud DLL 88 Clock ii ue Ee re ERA aee A ae seid 89 Counter7 Timets eoa a RENRIS DUAE RE Ed ue A EE qub x e Ur eis 90 Tachometer 224 ds Es eMe oie Ls doa i E ULLA o ALS 91 Chapter 7 Troubleshooting sseseleeeee eI nmn 93 General Checklist e ce Ee ETE E Ero a ER CEU t RI eg de hue 94 Technical Support s eide cs vei A er o m sre ERU A E Re a he ee 96 If Your Module Needs Factory Service 6 ene eens 97 Chapter 8 Calibration mM id da epee 99 Using the Calibration Utility 0 00 100 Calibrating the Analog Input Subsystem 2 0 66 101 Connecting a Precision Voltage Source 6 cece eee 101 Using the Auto Calibration Procedure 0 0 00 101 Using the Manual Calibration Procedure 000 000 e eee eee eee 102 Contents Appendix A Specifications 000 c eee nne 103 Analog Input Specifications isses enn 104 Measuring Dynamic Performance 06 666 e 106 Digital 17 O Specifications 2 eee ca er bn He EPIS Itu e 109 Counter Timer Specifications ooooooocccccccccccorrr een 110 Tachometer Input Specifications 2 0 66 ees 111 External Trigger Specifications e 1
36. al number of DT9826 modules that you can connect to a single USB port depends on the throughput you want to achieve To connect multiple DT9826 modules to an expansion hub do the following 1 Attach one end of the USB cable to the module and the other end of the USB cable to an expansion hub Connect the power supply for the expansion hub to an external power supply Connect the expansion hub to the USB port on the host computer using another USB cable The operating system automatically detects the USB module and starts the Found New Hardware wizard 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 Install this driver software anyway The LED on the module turns green 27 Chapter 2 28 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 The LED on the module turns green Note Windows 7 finds the device automatically 5 Repeat these steps until you have attached the number of expansion hubs and modules that you require Refer to Figure 4 The operating system automatically detects the USB devices as they are installed DT9826 Module USB Cables Host Comp
37. are applied to the digital filter The filter expands the data to 24 bits and rejects signal parts greater than 20 833 KHz It also resamples the data at 41 666 kHz A 1 bit quantizer introduces many quantization errors to the signal The 1 bit 2 66 MHz data from the ADC carries all information to produce 24 bit samples at 41 666 kHz The Delta Sigma ADC converts from high speed to high resolution by adding much random noise to the signal In this way the resulting quantization noise is restricted to frequencies above 41 666 kHz This noise is not correlated with the useful signal and is rejected by the digital filter Nyquist Frequency and Bandwidth ADCs can represent signals of limited bandwidth only According to sampling theory the Nyquist Theorem you must specify a frequency that is at least twice as fast as the input s highest frequency component called the Nyquist frequency For example to accurately sample a 5 kHz signal specify a sampling frequency of at least 10 KHz Doing so avoids an error condition called aliasing in which high frequency input components erroneously appear as lower frequencies after sampling 63 Chapter 5 The bandwidth between 0 Hz and the Nyquist frequency is called the Nyquist bandwidth On the DT9826 3 dB bandwidth is 0 216 x the sample frequency or 8 99 kHz at the maximum sample frequency Signals exceeding this frequency will be filtered by the ADC Normal Mode Rejection and the Digital Filt
38. art 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 module however it may not support all of the module 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 FilesN Data Translation Win32 dtdataacq hlp where C is the letter of your hard disk drive 49 Chapter 4 50 Testing Single Value Analog Input To verify that the module can read a single analog input value do the following 1 up m 9 Connect a voltage source such as a function generator to analog input channel 0 on the DT9826 module Refer to page 39 for an example of how to connect an analog input In the Quick DataAcq application choose Single Analog Input from the Acquisition menu Select the appropriate DT9826 module from the Board list box In the Channel list box select analog input channel 0 In the Range list box select the range for the channel The default is 10 V Select Single Ended Click Get to acquire a single value from analog input channel 0 The application displays the value on the screen in both text and graphical form Verifying the Operation of a Module Testing Conti
39. ctory service 97 features 14 FFT plots 106 formatting data analog input 67 frequency base clock 89 external C T clock 73 internal A D clock 63 89 internal A D sample clock 89 internal C T clock 73 89 internal retrigger clock 84 output pulse 77 frequency measurement 43 54 76 G gain actual available 85 number of 85 programmable 85 gate type 73 high edge 90 high level 90 internal 90 low edge 90 low level 90 gate falling edge type 90 gate rising edge type 91 generating pulses 77 78 79 H hardware features 14 help online 49 high edge gate type 90 high level gate type 90 hot swapping 26 j inprocess buffers 84 input channels 61 ranges 63 resolution 61 sample clock sources 63 internal clock 73 89 gate type 90 147 Index 148 J J1 connector pin assignments EP353 133 EP356 141 J2 connector pin assignments EP353 135 OEM version 119 J3 connector pin assignments OEM version 123 L LabVIEW 16 LED 26 27 LEDs 27 28 lines digital I O 80 low edge gate type 90 low level gate type 90 LV Link 16 M MaxDifferentialChannels 85 MaxExtClockDivider 89 MaxFrequency 89 MaxMultiScanCount 84 MaxRetriggerFreq 84 MaxSingleEndedChannels 85 Measure Foundry 16 measuring frequency 76 measuring pulses 76 77 MinExtClockDivider 89 MinFrequency 89 MinRetriggerFreq 84 multiple channels analog input 62 N negative analog threshold trigger 88 number of differential channels 8
40. de as event counting count the C T clock source as external and the active gate type as low level or high level Make sure that the signals are wired appropriately Refer to page 41 for an example of connecting an event counting application Up Down Counting Use up down counting mode if you want to increment or decrement the number of rising edges that occur on the counter s clock input depending on the level of the counter s gate signal If the gate signal is high the C T increments if the gate signal is low the C T decrements Using software specify the counter timer mode as up down counting up down and the C T clock source as external Note that you do not specify the gate type in software Make sure that the signals are wired appropriately Refer to page 42 for an example of connecting an up down counting application Note Initialize the counter timer so that the C T never increments above FFFFFFFFh or decrements below 0 75 Chapter 5 76 Frequency Measurement Use frequency measurement mode if you want to measure the number of rising edges that occur on the counter s clock input over a specified duration You can connect a pulse of a known duration such as a one shot output of another user counter to the counter s gate input signal Use software to set up the counter timers as follows 1 Set up one of the counter timers for one shot mode specifying the clock source as internal the clock freq
41. degrading accuracy Through careful design these effects are minimized DC specifications are useful When measuring a 0 V input signal you can see the system s base line noise Under these conditions the DT9826 yields the highest ENOB Effective Number of Bits value of 16 bits Figure 26A shows the FFT plot when measuring a 0 V signal with a 40 kHz sample frequency Figure 26A shows the FFT plot when measuring a 0 V signal with a 20 kHz sample frequency ffective Number of Bits of a DT9826 02 F ENOB Effective Number of Bits of a DT9826 02 About Hook Up Gain 1024 Point FFT using a DT9826 02 0dB 20dB 20dB 40dB 40dB 60dB 60dB 80dB 80dB 100dB 100dB 120dB 120dB 140dB 140dB 160dB L 160dB L First Value i First Value qnn 00 0007 I M Auto SV DA 00 0003 Iv M Auto SV DA Frequency File In pres Frequency File In 0 Hertz File Out Stop 1 _ Test Quit 0 Hertz File Out Stop 1 lest Quit Figure 26A ENOB of 15 9 bits when measuring Figure 26B ENOB of 16 bits when measuring a 0 V signal with a 40 kHz sample frequency a 0 V signal with a 20 kHz sample frequency 106 Figure 26 ENOB Value When Measuring a 0 V Input Signal Specifications Dynamic FFT plots at higher input voltages and operating frequencies give the best indicator of accuracy under real world conditions For example when measuring a 5 V 1 kHz sine wave a signal at 1 2 full scale or 6 dB the DT9826 can achie
42. e eene Poe Re EROR P PH ee p ere debe 109 Counter Timer Specifications 2 222222 0 heri eki ieies ki RR E y PRETI RE 110 Tachometer pul oped Nean eriei e a ECCO b I Re Eee PR e es LH termal Trigaer DpeciDioatong ica Pee e Hoe peter erdt Se etel 112 Internal Clock Specificalons 20 ciu A RON Cr eye d rn 113 Power Physical and Environmental Specifications 00 00sec eee eee 114 Mating Connector Specifications iii ds nre rhe eed rrr eS 115 Regulatory Spscificallons ida ck eddie ed et y xe tr ette PER VES e da e 116 103 Appendix A Analog Input Specifications Table 22 lists the specifications for the analog input subsystem on the DT9826 module Table 22 Analog Input Specifications Feature Specifications Number of analog input channels 16 single ended simultaneous ADC Type Delta Sigma converter per channel Resolution 24 bits Range 10V Gain 1 Throughput per channel 41 666 kHz System accuracy to of FSR 20 kHz 0 01 System accuracy to of FSR 41 666 kHz 0 015 Data encoding Offset binary Coupling DC Input voltage 11 V maximum Maximum input voltage without damage Power on 30 V Power off 20 V Input impedance 10 MO Series 2 KQ 1000 pf Filter Input bias current 20 nA Nonlinearity 20 kHz 3 LSB 40 kHz 5 LSB Inherent quantizing error 0 5 LSB Drift Zero 10 uV per C Gain 30 ppm per C Differential linearity drift
43. eFalling Yes 90 Supported Device Driver Capabilities Table 19 DT9826 Counter Timer Options cont DT9826 Gate Rising Edge Type SupportsGateRising A D D A DIN DOUT C T QUAD TACH Yes Interrupt Driven Operations Supportsinterrupt a In one shot and repetitve one shot mode the pulse width is set to 100 automatically b High edge and low edge are supported for one shot and repetitive one shot modes High level and low level are supported for event counting up down counting frequency measurement edge to edge measurement continuous edge to edge measurement and rate generation modes Tachometer Table 20 DT9826 Tachometer Options DT9826 A D D A DIN DOUT C T QUAD TACH Rising Edge Type SupportsRisingEdge Yes Falling Edge Type SupportsFallingEdge Yes Stale Data Flag SupportsStaleDataFlag Yes 91 Chapter 6 92 General Checklist Technical Support If Your Module Needs Factory Service ccce eet me eed Troubleshooting 93 Chapter 7 General Checklist Should you experience problems using a DT9826 module do the following 1 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 information 2 Check the OMNI CD for any README files and ensure that you have used
44. eck the transducer connections see the instructions in the channel being read Chapter 3 The module is set up for Check your wiring and ensure that what you specify in single ended inputs while the software matches your hardware configuration see the software is set up for differential instructions in Chapter 3 inputs The DT9826 module is out of DT9826 modules are calibrated at the factory If you want calibration to readjust the calibration of the analog input or analog output circuitry refer to Chapter 8 starting on page 99 USB 2 0 is not Your operating system does not Ensure that you load the appropriate Windows Service recognized have the appropriate Service Pack version 2 for Windows XP If you are unsure of Pack installed whether you are using USB 2 0 or USB 1 1 run the Open Layers Control Panel applet described in Chapter 2 Standby mode is enabled on your PC For some PCs you may need to disable standby mode on your system for proper USB 2 0 operation Consult Microsoft for more information 95 Chapter 7 96 Technical Support If you have difficulty using a DT9826 module Data Translation s Technical Support Department is available to provide technical assistance To request technical support go to 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
45. ed 18 Digital Ground 37 Digital Ground 19 No Connect 123 Appendix B OEM Version of the DT9826 Module Figure 31 shows the layout of the 68 pin Digital I O connector J3 on the OEM version of the DT9826 module Q o o O 9 o O 9 Q Q O e o i o 15 TA 9 9 o Q 9 9 9 000060000 Figure 31 Layout of the 68 Pin Digital I O Connector 124 Connector Pin Assignments Table 33 lists the pin assignments of the Digital I O connector J3 on the OEM version of the DT9826 module Table 35 Pin Assignments of the Digital I O Connector J3 on the OEM Version of the DT9826 Module J3 Pin J3 Pin Assignment Signal Description Assignment Signal Description 1 Reserved 35 Reserved 2 Reserved 36 Digital Ground 3 Reserved 37 Reserved 4 Reserved 38 Digital Ground 5 Reserved 39 Reserved 6 Reserved 40 Digital Ground 7 Counter 1 Out 41 Counter 1 Gate 8 Counter 1 Clock 42 Digital Ground 9 Counter 0 Out 43 Counter 0 Gate 10 Counter 0 Clock 44 Digital Ground 11 Digital Ground 45 Reserved 12 Reserved 46 Reserved 13 Reserved 47 Reserved 14 Reserved 48 Reserved 15 Reserved 49 Reserved 16 Reserved 50 Reserved 17 Reserved 51 Reserved 18 Reserved 52 Reserved 19 Reserved 53 Reserved 20 Digital Input 7 54 Digital Output 7 21 Digital Input 6 55 Digital Output 6 22 Digital Inpu
46. em ena 50 Testing Continous Analog Input iocur bte Ee EE Rea 51 Testing Single Value TASA Tp is sep de eoe A eR Oba OR eR Hm Pee ER eO Ra nee Ya 52 Testing Simgle Value Digital Outpitb eeri sega eee eme t e ehem 53 Testing Frequency Measumermiettt 0 26 66 kee ee e Ete a teda 54 Testa Pulse Cpu e DEEST 55 47 Chapter 4 48 Set Up and Install the Module see Chapter 2 starting on page 23 ES E Wire Signals to the BNC Connection Box see Chapter 3 starting on page 31 this chapter 4 Verify the Operation of the Module D You can verify the operation of a DT9826 module using the Quick DataAcq application Quick DataAcq lets you 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 Read the value of the digital input port Output data from the digital output port Measure the frequency of events Output pulses either continuously or as a one shot Save the input data to disk Verifying the Operation of a 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 St
47. er The digital filter of the ADC passes only signal components within the Nyquist bandwidth or within multiples of the Nyquist bandwidth The sample rate determines the location of the resulting notches in the digital filter The first notch is located at the sample frequency and subsequent notches are located at integer multiples of the sample frequency to allow for rejection of the fundamental frequency as well as harmonic frequencies Due to the digital filter design of the Delta Sigma ADCs the DT9826 can achieve high normal mode rejection at 50 Hz and 60 Hz power line frequencies by using a sample frequency of 10 Hz as shown in Figure 22 DIGITAL FILTER RESPONSE Ni nla Uu A A I A A PT W WAM d Ud uw uw i uu i 40 50 60 70 80 390 100 Frequency Hz Figure 22 Digital Filter Response 10 Hz Multiples Analog Input Conversion Modes The DT9826 module supports the following conversion modes e Single value mode described below Continuous scan mode described on page 65 Principles of Operation Single Value Mode Single value operations are the simplest to use Using software you specify the analog input channel The module acquires the data from the specified channel and returns the data immediately For a single value operation you cannot specify a clock source trigger source scan mode or buffer Single value operations stop automatically when finished you cannot stop a single value operation Note You ca
48. er Analog Out Clk Trig connector on the BNC connection box In this case the frequency of the Counter 0 clock input is the number of counts divided by the period of the Counter 0 Gate input signal Digital Ground O pin 5 Signal Source q pin 8 C U Counter 0 Clock in 11 Counter 1 Out Dp v gt D pin 28 Counter 0 Gate Cntr Timer Connector Figure 14 Connecting Counter Timer Signals to the BNC Connection Box for a Frequency Measurement Operation Using an External Pulse Period Pulse Width Measurement Figure 15 shows how to connect counter timer signals to the Cntr Timer Analog Out Clk Trig connector on the BNC connection box to perform a period pulse width measurement operation This example uses counter timer 0 You specify the active pulse high or low in software The pulse width is the percentage of the total pulse period that is active Refer to page 74 for more information about pulse periods and pulse widths 43 Chapter 3 Digital Ground EP id Signal Source in 8 U Counter 0 Clock P OP S Cntr Timer Connector Figure 15 Connecting Counter Timer Signals to the BNC Connection Box for a Period Pulse Width Measurement Operation Edge to Edge Measurement Figure 16 shows how to connect counter timer signals to the Cntr Timer Analog Out Clk Trig connector of the BNC connection box to perform an edge to edge measurement operat
49. er source as a software trigger 66 Principles of Operation External digital TTL trigger An external digital TTL trigger event occurs when the DT9826 module detects either a rising edge positive or falling edge negative transition on the signal connected to the AD Trig connector on the module Using software specify the start trigger source as an external positive digital TTL trigger or an external negative digital TTL trigger e Analog threshold trigger An analog threshold trigger event occurs when the signal on a specified analog input channel rises above or falls below a programmable threshold level Using software specify the following parameters Start trigger source Specify a positive low to high transition threshold trigger if you want to trigger when the signal rises above a threshold level or a negative high to low transition threshold trigger if you want to trigger when the signal falls below a threshold level Threshold channel Specify any one of the analog input channels as the threshold input channel Threshold level Specify a value between 10 V and 10 V as the threshold level Reference Trigger Sources DT9826 module supports an analog threshold trigger for the reference trigger The reference trigger event occurs when the signal attached to a specified analog input channel rises above a user specified threshold value Using software specify the following parameters
50. ernal clock refer to page 73 for more information about the C T clock sources Using software specify the counter timer mode as repetitive one shot the polarity of the output pulses high to low transition or low to high transition the C T clock source as internal recommended the clock divider and the active gate type rising edge or falling edge Refer to page 74 for more information about pulse output types and to page 73 for more information about gates Note In the case of a repetitive one shot operation a duty cycle of 100 is set automatically Make sure that the signals are wired appropriately Refer to page 45 for an example of connecting a repetitive one shot application 79 Chapter 5 Digital I O Features This section describes the following features of digital I O operations Digital I O lines Operation modes Digital I O Lines DT9826 modules support one digital input port consisting of 8 digital input lines lines 0 to 7 and one digital output port consisting of 8 digital output lines lines 0 to 7 The resolution is fixed at 8 bits You can specify the digital I O line that you want to read or write in a single value digital I O operation Refer to page 80 for more information about single value operations In addition you can perform a continuous digital input operation by specifying the entire digital input port in the analog input channel list A digital line is high if its value is
51. erved 43 TB3 Analog Ground 44 TB3 Reserved 45 TB4 Analog Ground 46 TB4 Reserved 47 TB4 Analog Ground 48 TB5 Reserved 49 TB5 Analog Ground 50 TB5 Reserved 51 TB5 Analog Ground 52 TB6 Reserved 53 TB6 Analog Ground 54 TB6 Analog In 15 55 TB7 Analog Ground 56 TB7 Analog In 14 57 TB7 Analog Ground 58 TB7 Analog In 13 59 TB8 Analog Ground 60 TB8 Analog In 12 61 TB8 Analog Ground 62 TB9 Analog In 11 Wiring Signals to the OEM Version of the Module Table 39 Screw Terminal Assignments on the EP355 Screw Terminal Panel When Attached to Connector J2 cont Screw Terminal Screw Terminal Terminal Block Signal Description Terminal Block Signal Description 63 TB10 Analog Ground 64 TB10 Analog In 10 65 TB10 Analog Ground 66 TB9 Analog In 9 67 TB9 Analog Ground 68 TB9 Analog In 8 EP355 Screw Terminal Assignments when Attached to Connector J3 Attach the EP355 screw terminal panel to connector J3 on the OEM version of the DT9826 module when you want to access the counter timer signals tachometer digital I O signals and the external trigger signal Table 40 lists the screw terminal assignments when the EP355 panel is attached to connector J3 Table 40 Screw Terminal Assignments on the EP355 Screw Terminal Panel When Attached to Connector J3 Screw Terminal Screw Terminal Terminal Block Signal Description Term
52. evices DT Open Layers for NET User s Manual UM 22161 For programmers who are developing their own application programs using Visual Cft 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 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 This manual is included on the Data Acquisition OMNI CD 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 About this Manual e 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 DAQ Adaptor for MATLAB UM 22024 This document describes how to use Data Translation s DAQ Adaptor to provide an interface between the MATLAB Data Acquisition subsystem from The MathWorks and Data Translation s DT Open Layers architecture Microsoft Windows XP Windows Vista or Windows 7 documentation e USB web site http www usb org Where To Get Help
53. ference 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 Communica
54. g Out Clk Trig connector on the BNC connection box to perform an event counting operation without using a gate The counter counts the number of rising edges that occur on the Counter 0 Clock input Q pin 5 Digital Ground Signal Source pin 8 Counter 0 Clock ks Cntr Timer Connector Figure 12 Connecting Counter Timer Signals to the BNC Connection Box for an Event Counting Operation Without Using a Gate Up Down Counting Figure 13 shows how to connect counter timer signals to the Cntr Timer Analog Out Clk Trig connector on the BNC connection box to perform an up down counting operation In this example counter timer 0 is used The counter keeps track of the number of rising edges that occur on the Counter 0 Clock input The counter increments when the Counter 0 Gate signal is high and decrements when the Counter 0 Gate signal is low Digital Ground Spine Up Down E y pins Signal Counter 0 Clock gt D P Source m D pin 28 Counter 0 Gate d OP Cntr Timer Connector Figure 13 Connecting Counter Timer Signals to the BNC Connection Box for an Up Down Counting Operation Wiring Signals to the BNC Connection Box Frequency Measurement One way to measure frequency is to connect a pulse of a known duration such as a one shot output of counter timer 1 to the Counter 0 Gate input Figure 14 shows how to connect counter timer signals to the Cntr Tim
55. g analog input signals and one 26 pin connector for attaching a 5B Series signal conditioning backplane You can connect an optional STP37 accessory panel and EP360 cable to the 37 pin connector for easier wiring 17 Chapter 1 18 Table 1 Accessories for the DT9826 Module cont Accessory Description EP355 Screw terminal panel for the OEM version of the DT9826 that provides 14 position screw terminal blocks for attaching analog input digital I O counter timer tachometer and trigger signals You can use up to two EP355 accessory panels with the OEM version of the DT9826 EP356 Accessory panel for the OEM version of the DT9826 that provides two 37 pin D sub connectors for attaching digital I O counter timer tachometer and trigger signals You can connect an optional STP37 accessory panel and EP333 cable to each 37 pin connector for easier wiring EP333 We cc Ws Y 2 meter shielded cable with two 37 pin connectors that connect the Digital I O connector on the BNC connection box to an STP37 screw terminal panel the Cntr Timer Analog Out Clk Trig connector on the BNC connection box to an STP37 screw terminal panel or the connectors on the EP356 accessory panel to an STP37 screw terminal panel EP360 SS Y m 2 meter shielded cable with two 37 pin connectors that connect either the Analog Input connector on the BNC connection box to an STP37 screw terminal
56. g parameters for the tachometer input The starting edge of the tachometer input signal to use for the measurement rising or falling edge e A flag called Stale indicating whether or not the data is new If the Stale flag is set as Used the default value the most significant bit MSB of the value is set to 0 to indicate new data reading the value before the measurement is complete returns an MSB of 1 If the Stale flag is set to Not Used the MSB is always set to 0 When the operation is started the internal 12 MHz counter starts incrementing when it detects the first starting edge of the tachometer input and stops incrementing when it detects the next starting edge of the tachometer input When the measurement is complete the counter remains idle until it is read On the next read either 0 or the current value of the tachometer input from the previous measurement operation is returned depending on the module and the tachometer settings described above and the next operation is started automatically The software automatically synchronizes the value of the tachometer input with the analog input measurements so that all measurements are correlated in time The tachometer input is treated like any other channel in the analog input channel list therefore all the triggering and conversion modes supported for analog input channels are supported for the tachometer input When you read the value of the tachometer input as part of the
57. ge 73 Gate types described on page 73 Pulse types and duty cycles described on page 74 C T operation modes described on page 74 C T Channels The DT9826 modules provide two 32 bit counter timers numbered 0 and 1 Each counter accepts a clock input signal and gate input signal and outputs a pulse pulse output signal as shown in Figure 24 Clock Input Signal internal or external gt Counter __ Pulse Output Signal NENNEN Gate Input Signal software or external input Figure 24 Counter Timer Channel To specify the counter timer to use in software specify the appropriate C T subsystem Counter timer 0 corresponds to C T subsystem element 0 counter timer 1 corresponds to C T subsystem element 1 Using software you can also specify one or both of the counter timers in the analog input channel list To read counter timer 0 specify channel 17 in the analog input channel list to read counter timer 1 specify channel 18 in the analog input channel list 72 Principles of Operation C T Clock Sources The following clock sources are available for the counter timers Internal C T clock The internal C T clock always uses an 48 MHz time base Through software specify the clock source as internal and specify the frequency at which to pace the operation this is the frequency of the counter s output signal External C T clock An external C T clock is useful whe
58. ge type the value of the counter is stored and the next edge to edge measurement operation begins automatically Every time an edge to edge measurement operation completes the previous measurement is overwritten with the new value When you read the counter as part of the analog input data stream the current value from the last edge to edge measurement operation is returned and the value of the counter is reset to 0 Refer to page 76 for more information on edge to edge measurement mode Note If you read the counter before the measurement is complete 0 is returned To select continuous edge to edge measurement mode use software to specify the counter timer mode as continuous measure the C T clock source as internal and the start edge type Rate Generation Use rate generation mode to generate a continuous pulse output signal from the counter s output line this mode is sometimes referred to as continuous pulse output or pulse train output You can use this pulse output signal as an external clock to pace other operations such as analog input analog output or other counter timer operations The pulse output operation is enabled whenever the counter s gate signal is at the specified level While the pulse output operation is enabled the counter outputs a pulse of the specified type and frequency continuously As soon as the operation is disabled rate generation stops 77 Chapter 5 78 The period of the output
59. hapter 6 88 Triggers Table 17 DT9826 Trigger Options DT9826 Software Trigger Support SupportsSoftwareTrigger A D Yes D A DIN Yes DOUT Yes C T Yes QUAD TACH External Positive TTL Trigger Support SupportsPosExternalTTLTrigger Yes 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 Yes Yes Digital Event Trigger Support SupportsDigitalEventTrigger Threshold Trigger Channel SupportedThresholdTriggerChannel 0 to 15 Post Trigger Scan Count SupportsPostTriggerScanCount Supported Device Driver Capabilities Clocks Table 18 DT9826 Clock Options DT9826 Internal Clock Support SupportsInternalClock A D Yes D A DIN Yes DOUT Yes C T QUAD TACH External Clock Support SupportsExternalClock Yes Simultaneous Input Output on a Single Clock Signal SupportsSimultaneousClocking Yes Base Clock Frequency BaseClockFrequency 48 MHz 48 MHz Maximum Clock Divider MaxExtClockDivider 4294967296 Minimum
60. he stop edge is detected The C T then stops incrementing until it is enabled to start another measurement When the operation is complete you can read the value of the counter You can use edge to edge measurement to measure the following Pulse width of a signal pulse the amount of time that a signal pulse is in a high or a low state or the amount of time between a rising edge and a falling edge or between a falling edge and a rising edge You can calculate the pulse width as follows Pulse width Number of counts 48 MHz Principles of Operation Period of a signal pulse the time between two occurrences of the same edge rising edge to rising edge or falling edge to falling edge You can calculate the period as follows Period 1 Frequency Period Number of counts 48 MHz Frequency of a signal pulse the number of periods per second You can calculate the frequency as follows Frequency 48 MHz Number of Counts Using software specify the counter timer mode as edge to edge measurement mode measure the C T clock source as internal the start edge type and the stop edge type Make sure that the signals are wired appropriately Refer to page 44 for an example of connecting an edge to edge measurement application Continuous Edge to Edge Measurement In continuous edge to edge measurement mode the counter starts incrementing when it detects the specified start edge When it detects the next start ed
61. igital Out O 62 TB9 External ADC Trigger 63 TB10 Reserved 64 TB10 Digital Ground 65 TB10 Reserved 66 TB9 Reserved 67 TB9 Reserved 68 TB9 Reserved Wiring Signals to the OEM Version of the Module Using an EP356 Accessory Panel To attach an EP356 accessory panel to the OEM version of the D19826 module plug the EP356 panel into connector J3 on the module as shown in Figure 38 EP356 Accessory Panel 37 Pin 37 Pin Connector J1 Connector J2 OEM Version of bT9826 Module Module Connector J3 Figure 38 Connecting the EP356 Panel to Connector J3 on the OEM Version of the DT9826 Module Using Connector J1 on the EP356 Use connector J1 on the EP356 accessory panel to attach digital I O signals You can access the pins on the connector J1 either by using the STP37 screw terminal panel and EP333 cable available from Data Translation or by building your own cable panel To build your own cable panel refer to page 115 for information about the required mating connectors Table 41 lists the pin assignments for connector J1 on the EP356 accessory panel Table 41 EP356 Connector J1 Pin Assignments Pin Signal Description Pin Signal Description 1 Digital Input O 20 Digital Output O 2 Digital Input 1 21 Digital Output 1 3 Digital Input 2 22 Digital Output 2 4 Digital Input 3 23 Digital Output 3 5 Digital Input 4 24 Digital Output 4 6 Digital Input 5 25 Digital Output 5
62. inal Block Signal Description 1 TB1 Reserved 2 TB1 Reserved 3 TB1 Reserved 4 TB2 Reserved 5 TB2 Reserved 6 TB2 Reserved 7 TB3 Counter 1 Out 8 TB3 Counter 1 Clock 9 TB3 Counter O Out 10 TB3 Counter 0 Clock 11 GND Digital Ground 12 TB4 Reserved 13 TB4 Reserved 14 TB5 Reserved 15 TB5 Reserved 16 TB5 Reserved 17 TB5 Reserved 18 TB6 Reserved 19 TB6 Reserved 20 TB6 Digital Input 7 21 TB7 Digital Input 6 22 TB7 Digital Input 5 23 TB7 Digital Input 4 24 TB7 Digital Input 3 25 TB8 Digital Input 2 26 TB8 Digital Input 1 27 TB8 Digital Input O 28 TB9 Tachometer 29 TB10 Reserved 30 TB10 Digital Ground 31 TB10 Reserved 32 TB9 Reserved 33 TB9 Reserved 34 TB9 Reserved 139 Appendix C 140 Table 40 Screw Terminal Assignments on the EP355 Screw Terminal Panel When Attached to Connector J3 cont Screw Terminal Screw Terminal Terminal Block Signal Description Terminal Block Signal Description 35 TB1 Reserved 36 GND Digital Ground 37 TB1 Reserved 38 TB2 Digital Ground 39 TB2 Reserved 40 TB2 Digital Ground 41 TB3 Counter 1 Gate 42 TB3 Digital Ground 43 TB3 Counter 0 Gate 44 TB3 Digital Ground 45 TB4 Reserved 46 TB4 Reserved 47 TB4 Reserved 48 TB5 Reserved 49 TB5 Reserved 50 TB5 Reserved 51 TB5 Reserved 52 TB6 Reserved 53 TB6 Reserved 54 TB6 Digital Out 7 55 TB7 Digital Out 6 56 TB7 Digital Out 5 57 TB7 Digital Out 4 58 TB7 Digital Out 3 59 TB8 Digital Out 2 60 TB8 Digital Out 1 61 TB8 D
63. ing on page 31 for information on using these accessories with the BNC box refer Appendix C starting on page 129 for information on using these accessories with the OEM version of the DT9826 module Table 1 Accessories for the DT9826 Module Accessory Description STP37 Screw terminal panel that provides 37 screw terminal blocks for attaching analog input digital I O counter timer tachometer and trigger signals BNC Box Usage You can use up to three STP37 screw terminal panels if desired with the BNC box To access analog input signals from the Analog Input connector you can use an STP37 with an EP360 cable To access the digital I O signals from the Digital In Out connector you can use an STP37 with an EP333 cable To access the counter timer tachometer or trigger signals from the Cntr Timer Analog Out Clk Trig connector you can use an STP37 with an EP333 cable EP353 Usage To access the analog input signals from the EP353 you can use an STP37 with an EP360 cable EP356 Usage You can use up to two STP37 screw terminal panels if desired with the EP356 To access the digital I O signals from the EP356 you can use an STP37 with an EP333 cable To access the counter timer tachometer or trigger signals from the EP356 you can use an STP37 with an EP333 cable EP353 Accessory panel for the OEM version of the DT9826 that provides one 37 pin D sub connector for attachin
64. inputs and one BNC connector for the external A D trigger Wiring Signals to the D Sub Connectors If you do not want to use the BNC connectors or if you want to connect digital I O or counter timer signals to the BNC connection box you can use the 37 pin D sub connectors on the BNC box These connectors are described in the following sections Note that you can attach up to three STP37 screw terminal panels to the connectors on the BNC box to make wiring easier Figure 6 shows the layout of the STP37 screw terminal panel SSS wee Wry amp a N t N amp A V amp iN Y do wa y Na 8 amp dH v B o Figure 6 STP37 Layout 35 Chapter 3 Analog Input Connector The Analog Input connector allows you to access the analog input signals Table 2 lists the pin assignments for the Analog Input connector on the BNC box You can use the STP37 screw terminal panel and EP360 cable with the Analog Input connector to make wiring easier Table 2 Analog Input Connector and STP37 Pin Assignments Pin Signal Description Pin Signal Description 19 No Connect 37 Reserved 18 Reserved 36 Analog Ground 17 Analog Ground 35 Reserved 16 Reserved 34 Reserved 15 Reserved 33 Reserved 14 Reserved 32 Reserved 18 Reserved 31 Reserved 12 Reserved 30 Reserved 11 Reserved 29 Reserved 10 Reserved 28 Reserved 9 Reserved 27 Analog In 15 8 Analog Input 7 26
65. ion using two signal sources The counter measures the number of counts between the start edge in this case a rising edge on the Counter 0 Clock signal and the stop edge in this case a falling edge on the Counter 0 Gate signal You specify the start edge and the stop edge in software Refer to page 76 for more information on edge to edge measurement mode Signal Counter 0 Clock Source 0 p pin Counter 0 Gate Signal p pin 28 Source 1 Digital Ground p pin 29 Cntr Timer Connector Figure 16 Connecting Counter Timer Signals to the BNC Connection Box for an Edge to Edge Measurement Operation Wiring Signals to the BNC Connection Box Continuous Edge to Edge Measurement Figure 17 shows how to connect counter timer signals to the Cntr Timer Analog Out Clk Trig connector of the BNC connection box to perform a continuous edge to edge measurement operation The counter measures the number of counts between two consecutive start edges in this case a rising edge on the Counter 0 Clock signal You specify the start edge in software Refer to page 77 for more information on continuous edge to edge measurement mode Digital Ground D pins Signal Counter 0 Clock Source 0 E D pins Cntr Timer Connector Figure 17 Connecting Counter Timer Signals to the BNC Connection Box for a Continuous Edge to Edge Measurement Operation Pulse Output Figure 18 sh
66. iring Signals to the OEM Version of the Module Table 42 EP356 Connector J2 Pin Assignments cont Pin Signal Description Pin Signal Description 10 Counter 1 Clock 29 Digital Ground 11 Counter 1 Out 30 Counter 1 Gate 12 Reserved 31 Digital Ground 13 Reserved 32 Reserved 14 Reserved 33 Digital Ground 15 Reserved 34 Reserved 16 Reserved 35 Digital Ground 17 Reserved 36 Reserved 18 Digital Ground 37 Digital Ground 19 No Connect 143 Appendix C 144 A A D subsystem specifications 104 accessories 17 accessory panels EP353 17 130 133 EP356 18 131 141 analog input adding counter timers to the channel list 62 adding the digital input port to the channel list 62 adding the tachometer to the channel list 62 calibrating 101 channel list 62 channels 61 continuous operations 65 conversion modes 64 data format and transfer 67 error conditions 68 ranges 63 resolution 61 sample clock sources 63 single ended configuration 39 single value operations 65 testing continuous 51 testing single value 50 triggers 66 wiring 39 Analog Input connector pin assignments BNC box 36 OEM version 119 analog threshold trigger 67 applet Open Layers Control Panel 95 application wiring continuous edge to edge measurement 45 digital inputs and outputs 40 edge to edge measurement 44 event counting 41 frequency measurement 43 period measurement 43 pulse output 45 pulse width measu
67. iring signals continuous edge to edge measurement 45 digital inputs and outputs 40 edge to edge measurement 44 event counting 41 frequency measurement 43 period measurement 43 preparing 33 pulse output 45 pulse width measurement 43 recommendations 33 130 single ended analog inputs 39 tachometer input 46 to the BNC connection box 33 up down counting 42 writing programs in C C 16 Visual Basic 16 Visual Basic NET 16 Visual C 16 Visual C 16
68. l list You can read the tachometer input counter timers and the digital input port in the A D data stream This synchronizes the tachometer counter timer and digital input data with the analog input measurements Throughput rate up to 41 666 kSamples s per channel total throughput of up to 833 32 kSamples s to sample all 20 input channels 14 Overview Digital I O subsystem One digital input port consisting of 8 digital input lines you can read the value of the digital input port using the analog input channel list One digital output port consisting of 8 digital output lines Two 32 bit counter timer C T channels that perform event counting up down counting frequency measurement edge to edge measurement continuous edge to edge measurement continuous pulse output one shot and repetitive one shot operations You can read the value of one or more of the C T channels using the analog input channel list One tachometer input channel that accepts a signal in the range of 30 V You can read the value of the tachometer input in the analog input data stream allowing you to measure the period or frequency of the tachometer synchronously with analog input measurements Internal clock source Software programmable trigger source software external digital trigger or analog threshold trigger for the start trigger analog threshold trigger for the reference trigger 500 V galvanic isolation barrier that prevents grou
69. le 33 Pin Assignments of the Analog Input Connector J2 on the OEM Version of the DT9826 Module cont J2 Pin J2 Pin Assignment Signal Description Assignment Signal Description 30 Analog Input 2 64 Analog Input 10 31 Analog Ground 65 Analog Ground 32 Analog Input 1 66 Analog Input 9 33 Analog Ground 67 Analog Ground 34 Analog Input O 68 Analog Input 8 122 Connector Pin Assignments Digital I O Connector The following sections describe the digital In Out connector on the DT9826 BNC connection box and on the OEM version of the DT9826 module DT9826 BNC Connection Box Table 34 lists the pin assignments for the Digital In Out connector on the DT9826 BNC connection box Table 34 Pin Assignments of the Digital In Out Connector on the DT9826 BNC Connection Box Pin Signal Description Pin Signal Description 1 Digital Input O 20 Digital Output O 2 Digital Input 1 21 Digital Output 1 3 Digital Input 2 22 Digital Output 2 4 Digital Input 3 23 Digital Output 3 5 Digital Input 4 24 Digital Output 4 6 Digital Input 5 25 Digital Output 5 7 Digital Input 6 26 Digital Output 6 8 Digital Input 7 27 Digital Output 7 9 Reserved 28 Reserved 10 Reserved 29 Reserved 11 Reserved 30 Reserved 12 Reserved 31 Reserved 13 Reserved 32 Reserved 14 Reserved 33 Reserved 15 Reserved 34 Reserved 16 Reserved 35 Reserved 17 Digital Ground 36 Reserv
70. lest way to acquire data from a single analog input channel is to specify the channel for a single value analog input operation using software refer to page 64 for more information about single value operations You can also specify a single channel using the analog input channel list described in the next section 61 Chapter 5 Specifying One or More Analog Input Channels You can read data from one or more analog input channels by specifying the channel 0 to 15 in the analog input channel list Because these modules feature simultaneous sampling the order of the channels in the channel list does not matter You cannot specify the same channel more than once in the list Using software specify the channels that you want to sample You can enter up to 20 entries in the analog channel list for the DT9826 including the analog input channels 0 to 15 the tachometer input 16 two 32 bit counter timers 17 and 18 and the digital input port channel 19 Specifying the Tachometer Input Channel in the Analog Input Channel List The DT9826 module allows you to read the value of the tachometer input using the analog input channel list This feature is particularly useful when you want to correlate the analog input measurements with tachometer data To read the value of the tachometer specify channel 16 in the analog input channel list Refer to page 70 for more information about the tachometer input channel Specifying Counter
71. n you want to pace counter timer operations at rates not available with the internal C T clock or if you want to pace at uneven intervals The frequency of the external C T clock can range from 0 011176 Hz to 24 MHz Connect the external clock to the counter 0 or counter 1 clock input signal on the DT9826 module Counter timer operations start on the rising edge of the clock input signal Using software specify the clock source as external and specify a clock divider between 2 and 4294967296 The external C T clock the clock connected to the counter s clock input signal determines how often you want to count events measure frequency or measure the time interval between edges Gate Types The edge or level of the counter gate signal determines when a counter timer operation is enabled DT9826 modules provide the following gate types None A software command enables any counter timer operation immediately after execution Logic low level external gate input Enables a counter timer operation when the counter s gate signal is low and disables the counter timer operation when the counter s gate signal is high Note that this gate type is used for event counting and rate generation modes refer to page 74 for more information about these modes Logic high level external gate input Enables a counter timer operation when the counter s gate signal is high and disables a counter timer operation when the counter s gate signal i
72. nalog input 61 available 86 digital I O 80 number of 86 retrigger clock frequency 84 returning modules to the factory 97 RMA 97 S sample clock sources 63 sample rate 65 scan operations analog input 65 screw terminal panels EP355 18 130 136 137 STP37 17 SDK 16 simultaneous clocking 89 simultaneous sample and hold support 85 simultaneous start list 83 single channel analog input 61 single ended channels 85 number of 85 single value operations 83 analog input 65 digital I O 80 software trigger 66 88 specifications 103 analog input 104 clocks 113 counter timer 110 digital I O 109 environmental 114 physical 114 power 114 regulatory 116 tachometer input 111 triggers 112 stale data flag 91 start trigger sources 66 stopping an operation 65 STP37 screw terminal panel 17 SupportedGains 85 SupportedResolutions 86 SupportedVoltageRanges 86 SupportsBinaryEncoding 84 SupportsBuffering 84 SupportsClockFalling 90 SupportsClockRising 90 SupportsContinuous 83 SupportsContinuousMeasure 90 SupportsCount 90 SupportsDifferential 85 SupportsExternalClock 89 SupportsFallingEdge 91 SupportsGateFalling 90 SupportsGateHighEdge 90 SupportsGateHighLevel 90 SupportsGateLowEdge 90 SupportsGateLowLevel 90 SupportsGateNone 90 SupportsGateRising 91 SupportsHighToLowPulse 90 SupportsInProcessFlush 84 SupportsInternalClock 89 SupportsLowToHighPulse 90 SupportsMeasure 90 SupportsNegExternalTTLTrigger 88 SupportsNegThresholdTrigger 88
73. nals s i ari oe aaa ae aE eee eee 33 Wiring Recommendations 6 66 es 33 Witing tothe BNC BOX cocoa ie chr veg Wnesenk oped Ses 33 Wiring Signals to the BNC Connectors 0 6 0 c cece eee eens 35 Wiring Signals to the D Sub Connectors 066 66 c eee eee 35 Analog Input Connector ormene urere e n e ia a 36 Digital T O Connector ia bas 37 Cntr Timer Analog Output Clk Trig Connector ooo o oooocommoooo 38 Connecting Analog Input Signals ees 39 Connecting Digital I O Signals 40 Connecting Counter TimerSignals oooooooooocccocnnncononcnnnnro nac 41 Event COUnIU TI c oso ere pert dt a dtp uid teda 41 Up Dowri Counting a peer an eee rete dp tle eee I Rar 42 Frequency Measurement cere ee oleh ls did 43 Period Pulse Width Measurement 0 0c cee eee eee eens 43 Edge to Edge Measurement 06 0 c ccc een eens 44 Contents Continuous Edge to Edge Measurement o oo ooooccocccccoo or 45 Pulse Qutput 2 at Sata POP a n e ee Sale nee e re cie ted 45 Connecting a Tachometer Input Signal 0 06 6 eee eee 46 Chapter 4 Verifying the Operation of a Module ooo o oooomoooo 47 Running the Quick DataAcq Application 0 49 Testing Single Value Analog Input ssssseeee eee 50 Testing Continuous Analog Input 0 0 6 6 rr 51 Testing Single Value Digital Input 0 0 2 e eee 52 Testing Single Value Digital Output sess 53 Testing Fre
74. nd loops to maximize analog signal integrity and protect your computer 15 Chapter 1 16 Supported Software The following software is available for use with the DT9826 module and is on the Data Acquisition OMNI CD DT9826 Device Driver The device driver allows you to use a DT9826 module with any of the supported software packages or utilities Refer to page 29 for more information on configuring the device driver Quick DataAcq application The Quick DataAcq application provides a quick way to get up and running using a DT9826 module Using this application you can verify key features of the modules display data on the screen and save data to disk Refer to Chapter 4 starting on page 47 for more information on using the Quick DataAcq application 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 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 DT9826 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 Micr
75. nect single ended voltage inputs channels 0 and 1 in this case to the BNC connectors on the BNC connection box BNC Connection Box Signal Source Analog In 0 Analog In 1 Figure 7 Connecting Single Ended Inputs to the BNC Connection Box Figure 8 shows how to connect single ended voltage inputs channels 0 and 1 in this case to the Analog Input connector on the BNC connection box Analog Ground QD pin 17 Analog In 1 QD pin2 Analog In 0 Vsource 0 HQ pin 1 Signal Source Analog Input Connector Figure 8 Connecting Single Ended Voltage Inputs to the Analog Input D Sub Connector on the BNC Connection Box 39 Chapter 3 Connecting Digital I O Signals Figure 9 shows how to connect digital input signals lines 0 and 1 in this case to the Digital In Out connector m Digital Input 0 2 2 E D pin 1 Digital Input 1 TTL Inputs g p pin 2 Digital Ground Q pin 17 Digital In Out Connector Figure 9 Connecting Digital Inputs to the Digital In Out Connector on the BNC Connection Box Figure 10 shows how to connect a digital output line 0 in this case to the Digital In Out connector 0 Out LED On M ob g pin 20 500 Q Digital Out 0 5V pin 36 Digital Ground Digital In Out Connector Figure 10 Connecting Digital Outputs to the Digital In Out Connector on the BNC Connection Box 40
76. necting to the host computer 26 connectors Analog Input on BNC box 36 Analog Input on OEM version 119 Cntr Timer Analog Out Clk Trig on BNC box 38 127 Digital I O on BNC box 37 Digital I O on OEM version 123 J1 on the EP353 133 J1 on the EP356 141 J2 connector pin assignments EP356 142 J2 on the EP353 135 J2 on the EP356 142 USB 118 continuous analog input post trigger 83 scan operations 65 continuous counter timer 83 continuous digital I O 83 continuous digital input 80 continuous edge to edge measurement mode 77 90 wiring 45 Control Panel applet 95 conventions used 10 conversion modes continuous analog input scan mode 65 digital I O 80 single value analog input 65 conversion rate 65 counter timer channels 72 85 clock sources 73 89 clock falling edge type 90 clock rising edge type 90 connecting edge to edge signals 44 45 connecting frequency measurement signals 43 connecting period signals 43 connecting pulse output signals 45 connecting pulse width signals 43 connecting up down counting signals 42 continuous edge to edge measurement mode 90 edge to edge measurement mode 90 event counting 90 gate types 73 gate falling edge type 90 gate rising edge type 91 high edge gate type 90 high level gate type 90 high to low output pulse 90 in analog input channel list 62 internal gate type 90 low edge gate type 90 low level gate type 90 low to high output pulse 90 one shot mode 90 rate generation mode 90 repetitive
77. nels using the analog input channel list 83 Chapter 6 Buffering Table 8 DT9826 Buffering Options DT9826 Buffer Support SupportsBuffering A D Yes D A DIN DOUT C T QUAD TACH Single Buffer Wrap Mode Support SupportsWrapSingle Inprocess Buffer Flush Support SupportsinProcessFlush Yes Triggered Scan Mode Table 9 DT9826 Triggered Scan Mode Options DT9826 Triggered Scan Support SupportsTriggeredScan A D D A DIN DOUT C T QUAD TACH Maximum Number of CGL Scans per Trigger MaxMultiScanCount Maximum Retrigger Frequency MaxRetriggerFreq Minimum Retrigger Frequency MinRetriggerFreq Data Encoding 84 Table 10 DT9826 Data Encoding Options DT9826 Binary Encoding Support A D SupportsBinaryEncoding Yes D A DIN Yes DOUT Yes C T Yes QUAD TACH Twos Complement Support SupportsTwosCompEncoding Returns Floating Point Values ReturnsFloats Supported Device Driver Capabilities Channels Table 11 DT9826 Channel Options DT9826 A D D A DIN DOUT C T QUAD TACH Number of Channels NumberOfChannels 208 1 1 4 1 1 SE Support SupportsSingleEnded Yes SE Channels MaxSingleEndedChannels 2 0 0 0 DI Support SupportsDifferential Yes Yes Yes DI Channels MaxDifferentialChannels 0 1 1 1
78. nnot read the value of the counter timers or the tachometer using a standard single value operation To read these values specify the channels as part of the analog input channel list using continuous scan mode described next Continuous Scan Mode Continuous scan mode takes full advantage of the capabilities of the DT9826 module Use continuous scan mode if you want to accurately control the period between successive simultaneous conversions of all channels in a channel list You can specify a channel list clock source start trigger reference trigger post trigger scan count and buffer using software You can enter up to 20 entries in the channel list including the sixteen analog input channels A D channels 0 to 15 the tachometer A D channel 16 the counter timers A D channels 17 and 18 and the digital input port A D channel 19 described on page 80 When it detects the start trigger the module simultaneously acquires pre trigger data from all of the input channels specified in the channel list including the tachometer counter timers and digital input port and converts the data from the analog input channels The sampled data is placed in the allocated buffer s When the reference trigger occurs pre trigger data acquisition stops and post trigger acquisition starts The operation continues until the number of samples you specify for the post trigger scan count are acquired at the point the operation stops Refer to page 66
79. nsupported 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 82 Supported Device Driver Capabilities Data Flow and Operation Options Table 7 DT9826 Data Flow and Operation Options DT9826 A D D A DIN DOUT C T QUAD TACH Single Value Operation Support SupportsSingleValue Yes Yes Yes Yes Simultaneous Single Value Output Operations SupportsSetSingleValues Continuous Operation Support SupportsContinuous Yes 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 a The DIN subsystem supports continuous mode by allowing you to read the digital input port all 8 digital input lines using the analog input channel list b The C T subsystem supports continuous mode by allowing you to read the value of one or more of the two general purpose counter timer chan
80. nuous Analog Input To verify that the module can perform a continuous analog input operation do the following 1 99 N 9 11 12 Connect known voltage sources such as the outputs of a function generator to analog input channels 0 and 1 on the DT9826 module In the Quick DataAcq application choose Scope from the Acquisition menu Select the DT9826 module from the Board list box In the Sec Div list box select the number of seconds per division 1 to 00001 for the display In the Channel list box select analog input channel 1 and then click Add to add the channel to the channel list Note that by default channel 0 is included in the channel list Click Config from the Toolbar In the Config dialog select ChannelType and then select Single Ended In the Config dialog select Range and then select Bipolar Click OK to close the dialog box 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 a unique color on the oscilloscope view Click Stop from the Toolbar to stop the operation 51 Chapter 4 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 inpu
81. odule Data Acquisition OMNI CD Note that if you purchased a BNC connection box a USB cable and EP361 power supply should also be included Additionally the BNC box includes an analog input mating connector Tyco 5 747917 2 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 25 Chapter 2 Attaching Modules to the Computer This section describes how to attach DT9826 modules to the host computer Note Most computers have several USB ports that allow direct connection to USB devices If your application requires more DT9826 modules than you have USB ports for you can expand the number of USB devices attached to a single USB port by using expansion hubs For more information refer to page 27 You can unplug a module 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 You must install the device driver before connecting your DT9826 module s to the host computer Run the installation program on your Data Acquisition OMNI CD to install the
82. one shot mode 90 subsystem specifications 110 up down counting 90 variable pulse width 90 wiring event counting signals 41 counting events 75 customer service 97 D data encoding 67 84 data flow modes continuous C T 83 continuous digital input 83 continuous post trigger 83 single value 83 data format and transfer analog input 67 DataAcq SDK 16 device driver 16 29 differential channels 85 digital I O 80 lines 80 operation modes 80 subsystem specifications 109 Index testing inputs 52 testing outputs 53 wiring 40 Digital I O connector pin assignments 37 BNC box 37 OEM version 123 digital input in analog input channel list 62 digital input port 80 digital trigger 67 DT Open Layers for NET Class Library 16 DTx EZ 16 duty cycle 74 dynamic performance 106 E edge type clock falling 90 clock rising 90 gate falling 90 gate rising 91 tachometer falling 91 tachometer rising 91 edge to edge measurement mode 76 90 wiring 44 effective number of bits 106 encoding data 67 ENOBs 106 environmental specifications 114 EP333 cable 18 EP353 accessory panel 17 130 133 EP355 screw terminal panel 18 130 136 137 EP356 accessory panel 18 131 141 EP360 cable 18 errors analog input 68 event counting 75 90 wiring 41 expansion hub 27 external clock 73 89 external clock divider maximum 89 minimum 89 external negative digital trigger 67 88 external positive digital trigger 67 88 external USB connector 118 F fa
83. onnector J2 137 EP355 Screw Terminal Assignments when Attached to Connector J3 139 Using an EP356 Accessory Panel sse 141 Using Connector J1 on the EP356 6 eee nee 141 Using Connector J2 on the EP3D6 assecc soga sr eee eee 142 Index ooi iul ale eee a tga da s di pa m Rep cud eae Ta ee ici e eae 145 About this Manual The first part of this manual describes how to install and set up your DT9826 module and device driver and verify that your module is working properly The second part of this manual describes the features of the DT9826 module the capabilities of the DT9826 Device Driver and how to program the DT9826 module using DT Open Layers for NET Class Library software Troubleshooting information is also provided Notes 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 installing setting up using and or programming a DT9826 module for data acquisition operations It is assumed that you are familiar with the requirements of you
84. osoft C or C to develop your own application software for a DT9826 module using Windows XP Windows Vista or Windows 7 the DataAcq SDK complies with the DT Open Layers standard Measure Foundry An evaluation version of this software is included or provided via a link on the Data Acquisition OMNI CD Measure Foundry is a drag and drop test and measurement application builder designed 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 DTx EZ DTx EZ provides ActiveX controls which allow you to access the capabilities of the DT9826 module using Microsoft Visual Basic or Visual C DTx EZ complies with the DT Open Layers standard DAQ Adaptor for MATLAB Data Translation s 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 this software is included on the Data Acquisition OMNI CD Use LV Link if you want to use the LabVIEW graphical programming language to access the capabilities of Data Translation modules Refer to the Data Translation web site ww w datatranslation com for information about selecting the right software package for your needs Overview Accessories Table 1 lists the following optional accessories for use with the DT9826 module Refer to Chapter 3 start
85. ows how to connect counter timer signals to the Cntr Timer Analog Out Clk Trig connector of the BNC connection box to perform a pulse output operation in this example counter timer 0 and an external gate are used PA erm C Counter 0 Out Heater Controller qp pin 18 Digital Ground o 4p pin 28 Counter 0 Gate External Gating O Switch O L p pin 29 Digital Ground GENRES Cntr Timer Connector Figure 18 Connecting Counter Timer Signals to the BNC Connection Box for a Pulse Output Operation Using an External Gate 45 Chapter 3 Connecting a Tachometer Input Signal You can connect a 30 V tachometer input signal to the AD Clk Tach BNC on a DT9826 BNC connection box as shown in Figure 19 Tachometer In 0 Signal ll a Source BNC Connection Box Figure 19 Connecting a Tachometer Input Signal to the DT9826 BNC Connection Box Figure 20 shows how to connect a tachometer signal to the Cntr Timer Analog Out Clk Trig connector on the BNC connection box Digital Ground pin 5 Signal Source Tachometer Input QD pin7 Cntr Timer Connector Figure 20 Connecting a Tachometer to the Cntr Timer Connector on the BNC Connection Box 46 NL Verifying the Operation of a Module Running the Quick DataAcg Application i ececreeecheeeete Pear me Xe onal 49 Testing Single Value Analog Input c iseeeeseeee eem e ee t e
86. power lines solenoids and electric arcs unless the signals are enclosed in a mumetal shield Prevent electrostatic discharge to the I O while the module is operational Connect all unused analog input channels to analog ground Wiring Methods You can connect signals directly through the J2 and J3 connectors on the OEM version of the DT9826 module or you can connect signals using the connectors and screw terminals on the following accessories EP353 This accessory panel plugs into connector J2 of the OEM version of the DT9826 module It provides one 37 pin D sub connector for attaching analog input signals and one 26 pin connector for attaching a AC1315 cable 5B Series signal conditioning backplane Refer to page 133 for more information about attaching the EP353 to the OEM version of the DT9826 module and for information about the connector pin assignments EP355 When plugged into connector J2 of the OEM version of the DT9826 module this screw terminal panel provides 14 position screw terminal blocks for attaching analog input signals When plugged into connector J3 of the OEM version of the DT9826 module this screw terminal panel provides 14 position screw terminal blocks for attaching counter timer tachometer digital I O and trigger signals Refer to page 136 for more information about attaching the EP355 to the OEM version of the DT9826 module and for information about the screw terminal assignments Wiring Signals to
87. pulse is determined by the C T clock source either internal using a clock divider or external You can output pulses using a maximum frequency of 24 MHz if using the internal C T clock or 12 MHz if using the external C T clock Refer to page 73 for more information about the C T clock sources Using software specify the counter timer mode as rate generation rate the C T clock source as either internal or external the clock divider for an internal clock the polarity of the output pulses high to low transition or low to high transition the duty cycle of the output pulses and the active gate type low level or high level Refer to page 74 for more information about pulse output signals and to page 73 for more information about gate types Make sure that the signals are wired appropriately Refer to page 45 for an example of connecting a rate generation application One Shot Use one shot mode to generate a single pulse output signal from the counter s output line when the specified edge is detected on the counter s gate signal You can use this pulse output signal as an external digital TTL trigger to start other operations such as analog input or analog output operations After the single pulse is output the one shot operation stops All subsequent clock input signals and gate input signals are ignored The period of the output pulse is determined by the C T clock source either internal using a clock divider or external
88. quency Measurement 0 0 lees nn 54 Tesine Pulse Output i d e UE ee are a dear use sc eedem 55 Part 2 Using Your Module llllleeeeeeess 57 Chapter 5 Principles of Operation ccc eee eee eee 59 Analog Input Fe t res o ron oeer ia aE en 61 Input Resolution eiaa de ani tee t a te ote Sad eer sce A 61 Analog Input Channels isa s mam be e m ek ad a er n 61 Specifying a Single Analog Input Channel ss sssssseses 61 Specifying One or More Analog Input Channels 0000000005 62 Specifying the Tachometer Input Channel in the Analog Input Channel List 62 Specifying Counter Timers in the Analog Input Channel List 62 Specifying the Digital Input Port in the Analog Input ChannelList 62 Input Ranges ides ri rias URGE Rab es 63 Input Sample Clock Sources ssssssssssesee eh 63 About the Delta Sigma Converters 00 0 e eee eee eee eee 63 Nyquist Frequency and Bandwidth 0 6 cece eee 63 Normal Mode Rejection and the Digital Filter 0 0 0 cece eee eee 64 Analog Input Conversion Modes 0 000 eee 64 Single Value Mode isses casein ma oes ee veges ee bee SoG ESSN Ree eS 65 Continuous Scan Mode ersero aeri cece cece eee EA RENATE RA 65 Input Itigeers ya ae LP Ae ae PEST pest e aad sd 66 Start Trigger SQUICES ao ota bese uda aa cad dad dad 66 Reference Trigger Sources oooooooooooccorrr eh 67 Data
89. r 0 Gate 10 Counter 1 Clock 29 Digital Ground 11 Counter 1 Out 30 Counter 1 Gate 12 Reserved 31 Digital Ground 13 Reserved 32 Reserved 14 Reserved 33 Digital Ground 15 Reserved 34 Reserved 16 Reserved 35 Digital Ground 17 Reserved 36 Reserved 18 Digital Ground 37 Digital Ground 19 No Connect 127 Appendix B 128 7 A Wiring Signals to the OEM Version of the Module Preparing to Wire Sinal a A A ra 130 Using the Connectors on the OEM Module 000 cece eee eee eee 132 Ven an EP303 Acssory Panel riscan ees Lost bet Pe ct pere Geka ce ees 133 Using an EP355 Screw Terminal Panel esee eee hme meer 136 Using an EPO ceso Panel o coco de bt er Eee RR ROS Sale Ea HER EE 141 129 Appendix C 130 Preparing to Wire Signals This section provides recommendations and information about wiring signals to the OEM version of the DT9826 module Note If you are using the BNC connection box refer to Chapter 3 starting on page 31 for wiring information Wiring Recommendations Keep the following recommendations in mind when wiring signals to a DT9826 module Use individually shielded twisted pair wire size 14 to 26 AWG in highly noisy electrical environments Separate power and signal lines by using physically different wiring paths or conduits To avoid noise do not locate the module and cabling next to sources that produce high electromagnetic fields such as large electric motors
90. r application It is also assumed that you have some familiarity with data acquisition principles that you understand your application and that you are familiar with the Microsoft Windows XP Windows Vista or Windows 7 operating system How this Manual is Organized This manual is organized as follows Chapter 1 Overview describes the major features of the DT9826 module as well as the supported software and accessories for the modules Chapter 2 Setting Up and Installing the Module describes how to install a module how to apply power to the module and how to configure the device driver Chapter 3 Wiring Signals to the BNC Connection Box describes how to wire signals to a DT9826 module Chapter 4 Verifying the Operation of a Module describes how to verify the operation of the 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 DT9826 Device Driver About this Manual 10 Chapter 7 Troubleshooting provides information that you can use to resolve problems with the module and device driver should they occur Chapter 8 Calibration describes how to calibrate the analog input circuitry of the module Appendix A Specifications lis
91. rement 43 single ended analog inputs 39 tachometer input 46 up down counting 42 applications LV Link 16 Measure Foundry 16 Index Quick DataAcq 16 B base clock frequency 89 BaseClockFrequency 89 binary data encoding 84 buffers 67 84 inprocess flush 84 C C C programs 16 C T see counter timer 110 cables EP333 18 EP360 18 USB 26 27 calibrating the module analog input subsystem 101 running the calibration utility 100 CGLDepth 85 channel list for analog input channels 62 for counter timers 62 for the digital input port 62 for the tachometer 62 specifying the tachometer 70 channel type differential 85 single ended 85 channel gain list depth 85 channels analog input 61 counter timer 72 digital I O 80 number of 85 clock sources analog input 63 counter timer 73 clock falling edge type 90 clock rising edge type 90 clocks base frequency 89 external 89 internal 89 maximum external clock divider 89 145 Index 146 maximum throughput 89 minimum external clock divider 89 minimum throughput 89 simultaneous 89 specifications 113 Cntr Timer Analog Out Clk Trig connector 38 127 connecting signals continuous edge to edge measurement 45 digital inputs and outputs 40 edge to edge measurement 44 event counting 41 frequency measurement 43 period measurement 43 pulse output 45 pulse width measurement 43 single ended analog inputs 39 tachometer input 46 up down counting 42 con
92. requency Figure 28B shows the FFT plot when measuring a 10 V 1 KHz sine wave with a 20 kHz sample frequency 107 Appendix A 108 ENOB Effective Number of Bits of a DT9826 02 About Hook Up Gain SSH Function OFF Frequency 0000 11024 Point FFT using a DT9826 02 OdB 20dB 1 1 40dB 60dB 80dB 100dB 120dB 140dB 160dB First Value 07 5045 Jv St Auto Frequency File In ERES 1016Hertz File Out f Stop 1 est Quit Figure 28A ENOB of 14 1 bits when measuring a 10 V 1 kHz sine wave with a 40 kHz sample frequency ENOB Effective Number of Bits of a DT9826 02 X About Hook Up Gain Frequency 20000 1024 Point FFT using a DT9826 02 OdB 20dB 40dB 60dB 80dB 100dB 120dB 140dB 160dB First Value 04 8772 I PALO Frequency File In 0 996 Hertz File Out Stop 1 Test Quit Figure 28B ENOB of 14 3 bits when measuring a 10 V 1 kHz sine wave with a 20 kHz sample frequency Figure 28 ENOB Value When Measuring a Full Scale Input Signal Conditions of use determine the accuracy of dynamic measurements While ENOB values can be higher when you measure input signals that are less than full scale the results may be misleading for many users ENOB values at full scale and at the full throughput of the device give the best indicator of accuracy under real world conditions Specifications Digital I O Specifications Table 23 li
93. rising edge pulse the high portion of the total pulse output period is the active portion of the signal or High to low to output a falling edge pulse the low portion of the total pulse output period is the active portion of the signal 6 Under Pulse Width enter a percentage or use the slider to select a percentage for the pulse width The percentage determines the duty cycle of the pulse 7 Click Start to generate the pulse s The application displays the results both in text and graphical form 8 ClickStop to stop a continuous pulse output operation One shot pulse output operations stop automatically 55 Chapter 4 56 Part 2 Using Your Module JJ Principles of Operation A alog Input Peas 505 ceed nto nca ehe I de RORU RP PESCE LEA d d EP reed 61 Tachometer Input Peatules con ia bees ae de RU Era 70 Counter Timer Feat e oet eee Er eb ecc ee Oed ce aei etr aces 72 Digital I C FeattieS eenei cessa sere Re RR nt saa anai RR ta a 80 59 Chapter 5 Figure 21 shows a block diagram of the DT9826 module 2 x 32 bit Up Down Ext ADC Trigger Threshold Trigger Detect Any ADC Channel e Aa qq aM AE eu A E r Analog Input 0 5 l E 5 a E l Analog Input 3 15 l gt l S 16 Simultaneous A D Channels l Input Control amp ee Tach e Trigger Interface Tachometer Input _ Logic Userciok TO
94. rted Device Driver Capabilities Data Plow and Operation DpDODE eree he ee Na ede reet 83 PUTING C PT 84 TU Ped or prm 84 INT soa a Mog ee be t Ad ut diss Dese b na 85 S corico corsa arde nda 85 on it AAA a AR 86 pi A eed ute fate or ena OUI ROSE UR Red etos ondes ee 86 Thetmocouple and RTD CUPP cis ecce Ier rRRES RR RR e EE er RU ration shoes 87 A ey gt eee ee ce ae ny ee ee eee 87 ji nn 88 S D EE 89 COMICAS Looloe cir sk Eelcue rc bs wd ER EGRE E EE wae ee aes e 90 Dco EET 91 81 Chapter 6 The DT9826 Device Driver provides support for the analog input A D digital input DIN digital output DOUT counter timer C T and tachometer TACH subsystems For information on how to configure the device driver refer to page 29 Table 6 DT9826 Subsystems ors ao om on poor er aue we 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 DT9826 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 u
95. s low Note that this gate type is used for event counting and rate generation modes refer to page 74 for more information about these modes Falling edge external gate input Enables a counter timer operation when a high to low transition is detected on the counter s gate signal In software this is called a low edge gate type Note that this gate type is used for edge to edge measurement one shot and repetitive one shot mode refer to page 74 for more information about these modes Rising edge external gate input Enables a counter timer operation when a low to high transition is detected on the counter s gate signal In software this is called a high edge gate type Note that this gate type is used for edge to edge measurement one shot and repetitive one shot mode refer to page 74 for more information about these modes Specify the gate type in software 73 Chapter 5 Pulse Output Types and Duty Cycles The DT9826 modules can output the following types of pulses from each counter timer High to low transitions The low portion of the total pulse output period is the active portion of the counter timer clock output signal Low to high transitions The high portion of the total pulse output period is the active portion of the counter timer pulse output signal You specify the pulse output type in software The duty cycle or pulse width indicates the percentage of the total pulse output period that is active
96. sion voltage source to the DT9826 module Connect the precision voltage source to the first channel you want to calibrate for example Analog In 0 AD Ch0 Using the Auto Calibration Procedure Auto calibration is the easiest to use and is the recommended calibration method To auto calibrate the analog input subsystem do the following 1 2 Select the A D Calibration tab of the DT9826 Calibration Utility Choose either a single channel or all channels from the Type of Calibration drop down list box in the Automatic Calibration area Set the voltage supply on your selected channel to 0 000V Click the Auto Calibration Start button A message appears notifying you to verify that 0 000 V is applied to the channel Verify that the supplied voltage to your selected channel is 0 000 V and then click OK The offset value is calibrated When the offset calibration is complete a message appears notifying you to set the input voltage of the channel to 9 375 V Check that the supplied voltage to your selected channel is 49 375 V and then click OK The gain value is calibrated and a completion message appears If you chose to calibrate all channels repeat the proceeding four steps for all other A D channels on the module the calibration utility prompts you to attach the precision voltage source to the next channel Follow the on screen prompts to proceed through the rest of the channels Note Atany time you can click Restore Fac
97. ssory Panel 26 Pin Connector J1 ETEELILEEL R OEM Version of DT9826 Module uae vn Module Connector J2 Figure 33 Connecting the EP353 Accessory Panel to Connector J2 on the OEM Version of the DT9826 Module Using Connector J1 on the EP353 Use connector J1 to attach a 5B Series signal conditioning backplane to the EP353 accessory panel To attach the backplane you also need an AC1315 cable To attach a 5B Series signal conditioning backplane to the EP353 accessory panel do the following 1 Plug one end of an AC1315 cable into connector J1 on the EP353 panel as shown in Figure 34 AC1315 Cable 26 Pin Connector J1 p To Host 37 Pin Connector J Computer EP353 Panel Figure 34 Connecting the AC1315 Cable to the EP353 Panel 133 Appendix C 2 Plug the other end of the AC1315 cable into the 26 pin connector on the 5B Series backplane as shown in Figure 35 E 5B Series Backplane 26 Pin Connector J1 la 37 Pin Connector J2 AC1315 Cable OEM P To Host E Computer EP353 Panel Figure 35 Connecting the AC1315 Cable to the 5B Series Backplane Table 37 lists the pin assignments for connector J1 on the EP353 accessory panel Table 37 EP353 Connector J1 Pin Assignments Pin Signal Description Pin Signal Description 1 Analog Input O 2 Analog Input 8 3 Analog Ground 4 Analog Input 9 5
98. sts the specifications for the digital I O subsystems on the DT9826 module Table 23 Digital I O Specifications Feature Specifications Number of digital I O lines 16 8 in 8 out Number of ports 2 8 bits each Logic family LVTTL 5 V tolerant Logic sense Positive true Inputs Input type Level sensitive Input logic load High input voltage Low input voltage Low input current 1 LVTTL 2 0 V minimum 0 8 V maximum 0 4 mA maximum Termination Inputs tied to 5 V through 22 kQ pullup resistors Outputs High output 3 84 V minimum Low output 0 33 V maximum High output current Low output current 2 mA maximum 6 mA maximum Interrupt on change No Clocked with sample clock Yes Software I O selectable No 109 Appendix A Counter Timer Specifications 110 Table 24 lists the specifications for the counter timer subsystem on the DT9826 module Table 24 Counter Timer Specifications Feature Specifications Number of channels 2 Input logic load High input voltage Low input voltage Low input current Resolution 32 bits per channel Logic family LVTTL 5 V tolerant Inputs 1 LVTTL 2 0 V minimum 0 8 V maximum 0 4 mA maximum Outputs High output Low output High output current Low output current 2 0 V minimum 0 8 V maximum 2 mA maximum 8 mA maximum Specifications Tachometer
99. t 5 56 Digital Output 5 23 Digital Input 4 57 Digital Output 4 24 Digital Input 3 58 Digital Output 3 25 Digital Input 2 59 Digital Output 2 26 Digital Input 1 60 Digital Output 1 27 Digital Input O 61 Digital Output O 28 Tachometer 62 External ADC Trigger 29 Reserved 63 Reserved 125 Appendix B 126 Table 35 Pin Assignments of the Digital I O Connector J3 on the OEM Version of the DT9826 Module cont J3 Pin J3 Pin Assignment Signal Description Assignment Signal Description 30 Digital Ground 64 Digital Ground 31 Reserved 65 Reserved 32 Reserved 66 Reserved 33 Reserved 67 Reserved 34 Reserved 68 Reserved Connector Pin Assignments Cntr Timer Analog Out CIk Trig Connector Table 36 lists the pin assignments of the Cntr Timer Analog Out CIk Trig connector on the DT9826 BNC connection box Note To access these signals on the OEM version of the DT9826 module use the Digital I O connector described on page 125 Table 36 Pin Assignments of the Cntr Timer Analog Out Clk Trig Connector on the DT9826 BNC Connection Box Pin Signal Description Pin Signal Description 1 Reserved 20 Reserved 2 Reserved 21 Reserved 3 Reserved 22 Reserved 4 Reserved 23 Reserved 5 Digital Ground 24 Digital Ground 6 Reserved 25 Reserved 7 Tachometer 26 External ADC Trigger 8 Counter 0 Clock 27 Digital Ground 9 Counter 0 Out 28 Counte
100. t line 0 on the DT9826 module Refer to page 40 for information about how to connect a digital input 2 In the Quick DataAcq application choose Digital Input from the Acquisition menu 3 Select the appropriate DT9826 module from the Board list box 4 Click Get The application displays the digital input value in both the Data box and the Digital Input box If an indicator light is lit red the line is high if an indicator light is not lit black the line is low 52 Verifying the Operation of a Module Testing Single Value Digital Output To verify that the module can output a single digital output value do the following 1 Connect a digital output to digital output line 0 on the DT9826 module Refer to page 40 for information about how to connect a digital output In the Quick DataAcq application choose Digital Output from the Control menu Select the appropriate DT9826 module from the Board list box Click the appropriate indicator lights to select the types of signals to write from the digital output lines If you select a light the module outputs a high level signal if you do not select a light the module outputs a low level signal You can also enter an output value for the eight digital output lines 0 to FF in the Hex text box Click Send The values of the digital output lines are updated appropriately 53 Chapter 4 Testing Frequency Measurement To verify that the module can perform a frequenc
101. the OEM Version of the Module e EP356 This accessory panel plugs into connector J3 of the OEM version of the DT9826 module It provides two 37 pin D sub connectors Use connector J1 of the EP356 to attach digital I O signals and use connector J2 of the EP356 to attach counter timer tachometer and trigger signals Refer to page 141 for more information about attaching the EP356 to the OEM version of the DT9826 module and for information about the connector pin assignments 131 Appendix C Using the Connectors on the OEM Module You can connect I O signals directly through the J2 and J3 connectors on the OEM version of the DT9826 module You access the pins on connectors J2 and J3 by building your own cable and screw terminal panel refer to page 115 for information about the required mating connectors The locations of the connectors are shown in Figure 32 eo AL y reno TE ROSTER stp tye UE digi i fiiiiibi 11114444 3 LJ LJ A ent AAA 2 Je LnEN Connector J2 Connector J3 Figure 32 Connectors on OEM Version of DT9826 Module Appendix B starting on page 117 lists the pin assignments for connectors J2 and J3 on the OEM version of the DT9826 module 132 Wiring Signals to the OEM Version of the Module Using an EP353 Accessory Panel To attach an EP353 accessory panel to the OEM version of the DT9826 module plug the EP353 panel into connector J2 on the module as shown in Figure 33 EP353 Acce
102. tions 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 aoee aaae a a E ehh n n nnn 9 Intended Audiences icc eder hak ha Pee eth he ERR Bh are gee Rd re bi ee ER e 9 How this Manual is Organized 0 0000 eee eee eee 9 Conventions Used in this Manual 0 00 cece cette een eee 10 Related Informatica ee Re ae eee e ie Lee Fa ete wie oe Te nes 10 Where lo Get Help 45 caeco eee ts dea atta da Ee ul eed pass 11 Chapter 1 Overview oooocooccccn Rh Rh n hn 13 DT9826 Hardware Features sssssseeeeelee e 14 Supported SoftWare dece Reb Pb E redi vue Serre a e ete ees 16 Accessories 17 i etn Ei X HRS A CDU ent tele GC ARM 17 Getting Started Procedure reo re a a ee een 19 Part 1 Getting Started via a Stee ead be 21 Chapter 2 Setting Up and Installing the Module Lus 23 Unpacking c Sete weeks COEUR EE URL de ede Rd 25 Attaching Modules to the Computer eee 26 Connecting Directly to the USB Ports sssse e 26 Connecting to an Expansion Hub ssssssssssss ees 27 Configuring the DT9826 Device Driver ssssssss ee 29 Chapter 3 Wiring Signals to the BNC Connection Box 31 Preparing to Wire Sig
103. tors power lines solenoids and electric arcs unless the signals are enclosed in a mumetal shield Prevent electrostatic discharge to the I O while the box is operational Connect all unused analog input channels to analog ground Wiring to the BNC Box The BNC connection box contains BNC connectors and three 37 pin D sub connectors as shown in Figure 5 33 Chapter 3 Analog Input BNCs Tachometer BNC Digital In Out Connector Analog Input Connector External A D Trigger BNC Cntr Timer Connector Figure 5 DT9826 BNC Connection Box You can wire signals to the BNC connection box as follows Analog input signals You can wire analog input signals in one of the following ways Using the BNC connectors labelled AD Ch0 to AD Ch15 Using the appropriate pins on the Analog Input connector You can access the pins either by using the EP360 cable and STP37 screw terminal panel available from Data Translation by plugging in the supplied 37 mating connector Tyco 5 747917 2 or by building your own cable panel Refer to page 36 for connector pin assignments Tachometer signal You can wire a tachometer signal in one of the following ways Using the BNC connector labelled AD Clk Tach Using the Tachometer pin on the Cntr Timer Analog Out Clk Trig connector You can access this pin either by using the EP333 cable and STP37 screw terminal panel available from Data Translation or by building yo
104. tory Settings to reset the A D calibration values to their original factory settings This process will undo any auto or manual calibration settings 101 Chapter 8 Using the Manual Calibration Procedure If you want to manually calibrate the analog input circuitry instead of auto calibrating it do the following for each channel substitute the appropriate channel number as you go 1 Adjust the offset as follows a Verify that 0 000 V is applied to AD Ch0 and that A D Channel Select is set to Channel 0 The current voltage reading for this channel is displayed in the A D Value window b Adjust the offset by entering values between 0 and 255 in the Offset edit box or by clicking the up down buttons until the A D Value is 0 000 V 2 Adjust the gain as follows a Verify that 9 375 V is applied to AD Ch0 and that A D Channel Select is set to Channel 0 The current voltage reading for this channel is displayed in the A D Value window b Adjust the gain by entering values between 0 and 255 in the Gain edit box or by clicking the up down buttons until the A D Value is 9 3750 V 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 102 m Specifications Analog Input Specifications eec eese Cede ente ee pine nt ee bok e en ecd et 104 PN rial IO Speci Ca OMS se en ee
105. ts the specifications of the DT9826 module Appendix B Connector Pin Assignments lists the pin assignments of the connectors on the DT9826 BNC connection box and on the OEM version of the DT9826 module Appendix C Wiring Signals to the OEM Version of the Module describes how to wire signals to the OEM version of the DT9826 module and lists the pin assignments of the connectors on the accessory panels that are used with the OEM version of the module An index completes this manual Conventions Used in this Manual The following conventions are used in this manual Notes provide useful 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 Courier font is used to represent source code Related Information Refer to the following documents for more information on using the DT9826 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 d
106. u specify them this way 62 Principles of Operation Input Ranges The DT9826 module provides an input range of 10 V Use software to specify the range as x10 V You cannot set a gain value for DT9826 module The gain is preset at 1 Input Sample Clock Sources The DT9826 module provides an internal A D clock source for pacing analog input operations Using software specify the clock source as internal and the clock frequency at which to pace the operation The minimum clock frequency is 10 Hz The maximum supported clock frequency is 41 666 kHz All input channels including the tachometer counter timers and or digital input port are clocked simultaneously at the specified rate if you specify them in the analog input channel list 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 The tachometer counter timer and digital input data is synchronized with the analog data stream This is done through the firmware and device driver by caching this data and aligning it in time with the analog data in the user s data buffers About the Delta Sigma Converters The DT9826 provides 16 Delta Sigma A D converters ADCs If you sample the data at a frequency of 41 666 kHz the ADCs actually sample the input signal at 2 66 MHz 64 times the sample rate and produce 1 bit samples that
107. uency the gate type that enables the operation as rising edge or falling edge and the polarity of the output pulse as high to low transition or low to high transition of the output pulse 2 Setup the counter timer that will measure the frequency for event counting mode specifying the type of clock pulses to count and the gate type this should match the pulse output type of the counter timer set up for one shot mode 3 Start both counters pulses are not counted until the active period of the one shot pulse is generated 4 Read the number of pulses counted Allow enough time to ensure that the active period of the one shot occurred and that events have been counted 5 Determine the measurement period using the following equation Measurement period 1 Active Pulse Width Clock Frequency 6 Determine the frequency of the clock input signal using the following equation Frequency Measurement Number of Events Measurement Period Edge to Edge Measurement Use edge to edge measurement mode if you want to measure the time interval between a specified start edge and a specified stop edge The start edge and the stop edge can occur on the rising edge of the counter s gate input the falling edge of the counter s gate input the rising edge of the counter s clock input or the falling edge of the counter s clock input When the start edge is detected the counter timer starts incrementing and continues incrementing until t
108. ur own cable panel Refer to page 38 for connector pin assignments Digital I O signals To wire digital I O signals use the Digital In Out connector You can access the pins either by using the EP333 cable and STP37 screw terminal panel available from Data Translation or by building your own cable panel Refer to page 37 for connector pin assignments 34 Wiring Signals to the BNC Connection Box e Counter timer signals To wire counter timer signals use the Cntr Timer Analog Out Clk Trig connector You can access the pins either by using the EP333 cable and STP37 screw terminal panel available from Data Translation or by building your own cable panel Refer to page 38 for connector pin assignments External A D trigger signal You can wire an external digital trigger signal in one of the following ways Using the BNC connector labelled AD Trig Using the External ADC Trigger pin on the Cntr Timer Analog Out Clk Trig connector You can access this pin either by using the EP333 cable and STP37 screw terminal panel available from Data Translation or by building your own cable panel Refer to page 38 for connector pin assignments Wiring Signals to the BNC Connectors To wire signals using the BNC connectors connect the input signals to the appropriate BNC connectors on the BNC connector box using a BNC cable Seventeen BNC connectors are available on the box 16 BNC connectors for single ended analog
109. ure Specifications Reference frequency 48 MHz A D master clock frequency range 0 011176 Hz to 16 MHz A D clock frequency Master Clock Frequency 6 64 3 dB frequency A D Clock Frequency 0 216 113 Appendix A Power Physical and Environmental Specifications Table 28 lists the power physical and environmental specifications for the DT9826 module 114 Table 28 Power Physical and Environmental Specifications Feature Specifications Power 5 V 5 500 mA maximum Dimensions OEM 8 230 inches x 3 937 inches x 0 753 inches 209 04 mm x 100 mm x 19 13 mm BNC 8 500 inches x 4 170 inches x 1 968 inches 215 9 mm x 105 92 mm x 50 mm Weight OEM 0 294 Ibs 133 4 g BNC 1 949 Ibs 884 4 g Environmental Storage temperature range Relative humidity Altitude Operating temperature range 0 C to 55 C 25 C to 85 C to 95 noncondensing to 10 000 feet Specifications Mating Connector Specifications Table 29 lists the mating cable connectors for the connectors on the DT9826 module Table 29 Mating Cable Connectors Part Number on Module Module Panel Connector or Equivalent Mating Cable Connector BNC connection box Analog input AMP Tyco AMP 5747375 8 AMP Tyco 5 747917 2 Digital In Out AMP Tyco 5747301 8 AMP Tyco 5 747916 2 Cntr Timer AMP Tyco 5747301 8 AMP Tyco 5 747916 2 Analog Out Clk Trig
110. ut Anas cepe oda nt Aes ve Ee NDA te RUE Nat ders 39 Comecing Detal VO enalg eere Mentre e Rat rete ex rte ret les 40 Connecting Counter Timer SIENAS oce se et ex ee EE ERE ER Rd 41 Connecting a Tachometer Input Signal oc cadce ck ek oa e Per satel caddie aerea 46 31 Chapter 3 32 C Set Up and Install the Module see Chapter 2 starting on page 23 a J Wire Signals to the BNC Connection Box this chapter C Verify the Operation of the Module see Chapter 4 starting on page 47 Wiring Signals to the BNC Connection Box Preparing to Wire Signals This section provides recommendations and information about wiring signals to the BNC connection box Note If you are using the OEM version of the DT9826 module use this chapter for conceptual information and then refer to Appendix C starting on page 129 for connector pin assignments and accessory panel information Wiring Recommendations Keep the following recommendations in mind when wiring signals to a BNC connection box Follow standard ESD procedures when wiring signals to the module Use individually shielded twisted pair wire size 14 to 26 AWC in highly noisy electrical environments Separate power and signal lines by using physically different wiring paths or conduits Toavoid noise do not locate the box and cabling next to sources that produce high electromagnetic fields such as large electric mo
111. uter DT9826 Module NE for Hub USB Cable Power Supply a DT9826 Module USB Cable X Expansion Ni Power Supply for Hub J DT9826 Module USB Cables Figure 4 Attaching Multiple Modules Using Expansion Hubs Setting Up and Installing the Module Configuring the DT9826 Device Driver You can rename the DT9826 module by configuring the device driver for the DT9826 module as follows 1 If you have not already done so power up the host computer and all peripherals 2 From your Windows start menu select the Control Panel 3 From the Control Panel double click Open Layers Control Panel In some operating systems you must view the Control Panel by icons to see the Open Layers Control Panel The Data Acquisition Control Panel dialog box appears 4 If you want to rename the module click the name of the module that you want to rename click Edit Name enter a new name for the module and then click OK The name is used to identify the module in all subsequent applications 5 Repeat steps 4 for the other modules that you want to rename 6 When you are finished renaming the modules click Close to close the Control Panel Continue with the instructions on wiring in Chapter 3 29 Chapter 2 30 Wiring Signals to the BNC Connection Box Prepare ts Wie MANS io eer ERE sbi bad e at ce erede et 33 Connecting Analog Inp
112. ve ENOB values of 15 bits Figure 27A shows the FFT plot when measuring a 5 V 1 KHz sine wave with a 40 KHz sample frequency Figure 27B shows the FFT plot when measuring a 5 V 1 kHz sine wave with a 20 kHz sample frequency F ENOB Effective Number of Bits of a DT9826 02 About Hook Up Bain 1 X Frequency UC 11024 Point FFT using a DT9826 02 OdB 20dB 40dB 60dB 80dB 100dB 120dB 140dB 160dB First Value 02 2438 Vv Frequency File In 1016 Hertz File Out Stop 1 est Quit Auto Figure 27A ENOB of 14 8 bits when measuring a 5 V 1 kHz signal with a 40 kHz sample frequency ENOB Effective Number of Bits of a DT9826 02 About Hook Up Bain 1 X Frequency nici Bod M 1024 Point FFT using a DT9826 02 OdB 20dB 140dB 160dB First Value 02 9881 I Bern SV DA Frequency File In 996 Hertz File Out Stop 1 Test Quit Figure 27B ENOB of 15 1 bits when measuring a 5 V 1 kHz signal with a 20 kHz sample frequency Figure 27 ENOB Value When Measuring a 1 2 Full Scale 6 dB Input Signal The ENOB value further degrades at the maximum input signal voltage full scale and the fastest throughput frequency Under these conditions the DT9826 yields an ENOB value of 14 3 bits you can see the full range of the A D without distortion at the peaks Figure 28A shows the FFT plot when measuring a 10 V 1 KHz sine wave with a 40 kHz sample f
113. ved 34 Reserved 16 Reserved 35 Reserved 17 Reserved 36 Analog Ground 18 Reserved 37 Digital Ground 19 No Connect 135 Appendix C Using an EP355 Screw Terminal Panel To access analog input signals from the EP355 screw terminal panel plug the EP355 panel into connector J2 on the OEM version of the DT9826 module To access the digital I O counter timer tachometer digital I O or the external trigger signals from the EP355 screw terminal panel attach the EP355 panel to connector J3 on the OEM version of the DT9826 module Refer to Figure 36 EP355 Screw Terminal Panels Module Connector J2 Module Connector J3 OEM Version of DT9826 Module Figure 36 Connecting EP355 Panels to Connector J2 and Connector J3 on the OEM Version of the DT9826 Module 136 Wiring Signals to the OEM Version of the Module EP355 Screw Terminal Blocks Figure 37 shows the locations of the 14 position screw terminal blocks on the EP355 screw terminal panel D 29 CO et ID 54 gt 47 T 40 sa QD 2 qp pe D s 30 60 53 46 39 64 26 D 19 12 5 65 25 18 GND 4 67 23 16 9 2 QD 34 AN 56 AD 49 q 2 TD 35 68 22 15 8 1 De s e De Qo qD 28 21 qD 14 7 Cpeeng TB9 TB7 TB5 TB3 TB1
114. ver see the instructions in Chapter 2 The module is damaged Contact Data Translation for technical support refer to page 96 Intermittent operation Loose connections or vibrations exist Check your wiring and tighten any loose connections or cushion vibration sources see the instructions in Chapter 3 The module is overheating Check environmental and ambient temperature consult the module s specifications on page 114 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 see the instructions in Chapter 3 94 Troubleshooting Table 21 Troubleshooting Problems cont Symptom Possible Cause Possible Solution Device failure error reported The DT9826 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 see the instructions in Chapter 3 The DT9826 module was removed while an operation was being performed Ensure that your DT9826 module is properly connected see the instructions in Chapter 2 Data appears to An open connection exists Check your wiring and fix any open connections see the be invalid instructions in Chapter 3 A transducer is not connected to Ch
115. version from the previous input sample clock Input FIFO overflow Indicates that the input data is not being transferred fast enough from the Input FIFO on the module through the USB interface to the host This error is reported if the Input FIFO is full If one of these error conditions occurs the module stops acquiring and transferring data to the host computer 68 Principles of Operation To avoid these errors try one or more of the following Reduce the clock rate of the A D Increase the size of the buffers Increase the number of buffers Close any other applications that are running Run the program on a faster computer 69 Chapter 5 Tachometer Input Features 70 You can connect a tachometer signal with a range of 30 V to the DT9826 module This signal has a maximum frequency of 1 MHz and a minimum pulse width of 0 4 us The threshold voltage is fixed at 2 V with 0 5 V of hysteresis You can measure the frequency or period of the tachometer input signal to calculate the rotation speed for high level 30 V tachometer input signals An internal 12 MHz counter is used for the measurement yielding a resolution of 83 ns 1 12 MHZ You can read the number of counts between two consecutive starting edges of the tachometer input signal by including channel 16 in the analog input channel list The starting edge is programmable either rising or falling Using software commands you can specify the followin
116. y measurement operation do the following 1 Wire an external clock source to counter timer 0 on the DT9826 module Refer to page 43 for an example of how to connect an external clock Note The Quick DataAcq application works only with counter timer 0 2 In the Quick DataAcq application choose Measure Frequency from the Acquisition menu 3 Select the appropriate DT9826 module from the Board list box 4 In the Count Duration text box enter the number of seconds during which events will be counted 5 Click Start to start the frequency measurement operation The operation automatically stops after the number of seconds you specified has elapsed and the frequency is displayed on the screen 6 Click Stop to stop the frequency measurement operation 54 Verifying the Operation of a Module Testing Pulse Output To verify that the module can perform a pulse output operation perform the following steps 1 Connect a scope to counter timer 0 on the DT9826 module Refer to page 45 for an example of how to connect a scope a pulse output to counter timer 0 Note The Quick DataAcq application works only with counter timer 0 2 In the Quick DataAcq application choose Pulse Generator from the Control menu 3 Select the appropriate DT9826 module from the Board list box 4 Select either Continuous to output a continuous pulse stream or One Shot to output one pulse 5 Select either Low to high to output a

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