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DT9816 User's Manual - Cole

1. Contents Input Ranges and Gains eee eee eee 60 Input Sample Clock Sources 61 Analog Input Conversion Modes 61 Single Value Operations 000s eee 61 Continuous Scan Mode cess ee eee 62 Input MIS SOLS cuina boo dd Aem geetees 63 Data Format and Transfer 63 Error Conditions egel be eltekarge atedansene badges 64 Digital I O Features oooooniscos cc cas a 65 Digital I O Lines i eei Es 65 Resolution iaa 65 Operation Modes 000 cece eee eee ee 66 Counter Timer Features LL 67 C T Channel sevice psi 67 C T Clock Sources LL 68 Gate Types init gian vp or e Mead qs 68 Pulse Duty Cycles et iii 69 Counter Timer Operation Modes 69 Event Counting 70 Frequency Measurement 70 Rate Generation LL Fl Chapter 7 Supported Device Driver Capabilities 73 Data Flo Weno dd e a vA 75 Buffering cuisine cheba siege RESP es 76 A A T E E deos 76 Triggered Scan Mode o 77 Galileo ia E 78 Synchronous Digital I O L rnrn 79 Channels seissen tieid ia 79 Filters sevo deest se me bee eed eres abies 80 Contents A n 80 Resolutioti 1 lana 81 Moll suino iene 82 Clot O hee debe ttes pues 83 Counter Tier voi di E 84 Miscellaneous sssncnisanessa te bei rei E PAAR 86 Chapter 8 Programming Flowchart
2. Return Values OLBADRANGE OLNOTSUPPORTED OLBADDEVHANDLE DataVal An unsigned long variable that contains the digital output value to write the specified register Values can range between 0 and 4 294 967 295 If DIO PORT CONFIG is specified for Address the value specified for DataVal is the bit mask that configures the digital I O lines for input 0 or output 1 If DIO PORT Data is specified for Address the value specified for DataVal is the value that is written to the configured digital output lines You can configure 8 digital input and 8 digital output lines for the DT9816 module Possible return values are as follows The value is out of range for the device Request not supported by subsystem Illegal device handle specified A A D subsystem specifications 114 aborting an operation 104 aliasing 61 analog input channel gain list for analog input channels 60 channels 59 conversion modes 61 data format and transfer 63 error conditions 64 gain 60 ranges 60 sample clock sources 61 single ended operations 61 triggers 63 analog input features resolution 59 analog input operations using GO 47 48 49 50 51 52 53 54 analog inputs 37 applet Open Layers Control Panel 23 110 application wiring analog inputs 37 digital inputs and outputs 38 event counting 39 frequency measurement 41 pulse output 42 applications DT Measure Foundry 16 DT LV Link 16 Index attaching the module to the computer
3. The following flowchart shows the steps required to perform a frequency measurement operation using the Windows timer If you need more accuracy the Windows timer provides refer to page 70 of this manual or to your DataAcq SDK User s Manual for more information C Initialize the device driver and get the N device handle with olDalnitialize J v Get a handle to the C T subsystem with Specify C T subsystem element 0 olDaGetDASS Y Specify the clock source as Attach an external C T with a OL_CLK_EXTERNAL using maximum recommended frequency of MHz to th ter O In signal olDaSetClockSource GMHZ tne Counter Ollinsigna v Specify the clock divider using Specify a clock divider between 2 the olDaSetExternalClockDivider default and 65534 y Specify the mode as OL_CTMODE_COUNT using olDaSetCTMode v a Go to the next page D o 95 Chapter 8 Frequency Measurement Operations cont C Continued from previous page l Configure the subsystem using olDaConfig y Start the frequency measurement operation using olDaMeasureFrequency Message is in the form OLDA_WM_MEASURE_DONE Use the LongtoFreq IParam macro to get the measured frequency value float Freq Freq LongtoFreq lParam message returned v Release each subsystem with olDaReleaseDASS v Release the device driver and te
4. Internal clock frequency 60 Hz to 6 MHz External clock divider 2 to 65534 117 Appendix A 118 Table 22 lists the power physical and environmental specifications for the DT9816 module Table 22 Power Physical and Environmental Specifications Feature DT9816 Specifications Power 5 V Enumeration Operation lt 100 mA lt 250 mA Physical Dimensions board Dimensions box with screw terminals and feet 100 mm L x 100 mm W x 15 5 mm H 107 7 mm L x 100 mm W x 33 5 mm H Weight board 65 8 g Weight box with screw terminals and feet 138 8 g Environmental Operating temperature range 0 to 55 C Storage temperature range 40 to 85 C Relative humidity to 95 non condensing Screw Terminal Assignments 119 Appendix B Table 23 lists the screw terminal assignments for the DT9816 module Table 23 DT9816 Screw Terminal Assignments Screw Screw Terminal Signal Terminal Signal 20 USB 5 V Out 40 Ext Trigger 19 Ground 39 Ext Clock 18 Counter 0 In 38 Ground 17 Counter 0 Out 37 Digital Output 7 16 Counter 0 Gate 36 Digital Output 6 15 Ground 35 Digital Output 5 14 Reserved 34 Digital Output 4 13 Reserved 33 Digital Output 3 12 Reserved 32 Digital Output 2 11 Reserved 31 Digital Output 1 10 2 5 V Reference 30 Digital Output 0 9 Analog Ground 29 G
5. OLSSC_NUMCHANNELS A D ga D A DIN DOUT C T SE Support OLSSC_SUP_SINGLEENDED Yes SE Channels OLSSC_MAXSECHANS DI Support OLSSC_SUP_DIFFERENTIAL Yes Yes Yes DI Channels OLSSC_MAXDICHANS DT2896 Channel Expansion Support OLSSC_SUP_EXP2896 DT727 Channel Expansion OLSSC_SUP_EXP727 a The DT9816 provides analog input channels 0 to 5 79 Chapter 7 Filters Table 11 DT9816 Filter Options DT9816 Filter Channel Support OLSSC_SUP_FILTERPERCHAN A D D A DIN DOUT C T Number of Filters OLSSC_NUMFILTERS Ranges Table 12 DT9816 Range Options DT9816 Number of Voltage Ranges OLSSC_NUMRANGES AID 18 D A DIN DOUT C T Range per Channel Support OLSSC_SUP_RANGEPERCHANNEL Yes a The input range for the module is 10 to 10 V 80 Supported Device Driver Capabilities Resolution Table 13 DT9816 Resolution Options DT9816 A D D A DIN DOUT C T Software Programmable Resolution OLSSC_SUP_SWRESOLUTION Yes Yes Number of Resolutions 1 b 1 b 1 c OLSSC NUMRESOLUTIONS 1 a The DT9816 provides 16 bit resolution b The DIN and DOUT subsystems are configured as two separate 8 bit ports c Theresolution of the counter timer subsystem is 16 81 Chapter 7 82 Triggers Table 14 DT9816 Trigger
6. fill it again See the next page if you want to transfer data from an inprocess buffer Yes Return to page 101 Wait for message 102 Programming Flowcharts Transfer Data from an Inprocess Buffer Use to determine the number of buffers on the C olDaGetQueueSize inprocess queue at least one must exist olDmAllocBuffer olDmCallocBuffer olDmMallocBuffer olDaFlushFromBufferInprocess Use to copy the data from the inprocess buffer to the allocated buffer for immediate processing Use to allocate a buffer of the specified number of samples The buffer into which inprocess data was copied was put onto the done queue by the driver E resulting in an OLDA_WM_BUFFER_DONE Deal with messages and i buffers message See page 101 for more information When the inprocess buffer has been filled it too is placed on the done queue and an OLDA_WM_BUFFER_DONE message is posted However the number of valid samples is equal to the queue s maximum samples minus what was copied out 103 Chapter 8 104 Stop the Operation Stop in an orderly olDaStop way Reinitialize olDaReset olDaAbort Waits until the last sample of the current buffer is filled then stops The driver posts a Buffer Done and Queue Stopped message Use olDaAbort and olDaReset to stop the operation on the subsystem imme
7. lists the specifications of the DT9816 module Appendix B Screw Terminal Assignments shows the screw terminal assignments of the DT9816 module Appendix C Reading from or Writing to the Digital Registers describes how to access the module s registers directly An index completes this manual About this Manual Conventions Used in this Manual The following conventions are used in this manual Notes provide useful information or information that requires special emphasis cautions provide information to help you avoid losing data or damaging your equipment and warnings provide information to help you avoid catastrophic damage to yourself or your equipment Items that you select or type are shown in bold Related Information Refer to the following documents for more information on using the DT9816 module Benefits of the Universal Serial Bus for Data Acquisition This white paper describes why USB is an attractive alternative for data acquisition It is available on the Data Translation web site www datatranslation com DT Measure Foundry Getting Started Manual UM 19298 and online help These documents describe how to use DT Measure Foundry to build drag and drop test and measurement applications for Data Translation data acquisition devices without programming DataAcq SDK User s Manual UM 18326 For programmers who are developing their own application programs using the Microsoft C comp
8. 27 B base clock frequency 83 binary data encoding 86 buffers 76 100 cleaning up 105 dealing with for A D operations 101 inprocess flush 76 multiple wrap mode 76 100 setting up for A D operations 100 single wrap mode 76 100 transferring from inprocess 103 waveform generation mode 76 C C C programs 16 C T see counter timer 117 cables USB 28 29 calibration 86 CGL see channel gain list 78 changing the name of a module 31 channel type differential 79 single ended 79 channel gain list 99 depth 78 for analog input channels 60 inhibiting 78 random 78 127 Index 128 sequential 78 zero start 78 channels analog input 59 counter timer 67 digital I O 65 number of 79 setting up parameters for 99 cleaning up an operation 105 clock divider 93 95 97 clock sources analog input 61 counter timer 68 clocks base frequency 83 clock divider 93 95 97 external 83 frequency 99 internal 83 93 95 97 99 maximum external clock divider 83 maximum throughput 83 minimum external clock divider 83 minimum throughput 83 number of extra 83 setting parameters for analog input operations 99 simultaneous 83 configuring the device driver 31 connecting signals analog inputs 37 digital inputs and outputs 38 event counting 39 frequency measurement 41 pulse output 42 connecting to the host computer 27 using an expansion hub 29 continuous analog input how to perform 91 post trigger 75 pre trigg
9. 5 starting on page 43 Wiring Signals to the Module Preparing to Wire Signals CAUTION To avoid electrostatic sensitivity unplug your DT9816 module from the computer before wiring signals This section provides recommendations and information about wiring signals to a DT9816 module Wiring Recommendations Keep the following recommendations in mind when wiring signals to a DT9816 module Use individually shielded twisted pair wire size 16 to 26 AWG in highly noisy electrical environments Separate power and signal lines by using physically different wiring paths or conduits e To avoid noise do not locate the box and cabling next to sources that produce high electromagnetic fields such as large electric motors power lines solenoids and electric arcs unless the signals are enclosed in a mumetal shield e Prevent electrostatic discharge to the I O while the box is operational e Connect all unused analog input channels to analog ground Wiring Locations You wire signals to the DT9816 module using the screw terminals on the module Table 2 lists the screw terminal assignments 35 Chapter 4 36 Table 2 DT9816 Screw Terminal Assignments Terminal Signal Terminal Signal 20 USB 5 V Out 40 Ext Trigger 19 Ground 39 Ext Clock 18 Counter 0 In 38 Ground 17 Counter 0 Out 37 Digital Output 7 16 Counter 0 Gate 36 Digital Out
10. C T clock can range from 60 Hz to 6 MHz e External clock An external clock is useful when you want to pace counter timer operations at rates not available with the internal clock or if you want to pace at uneven intervals Connect an external clock with a maximum recommended frequency of 6 MHz to the Counter 0 In signal on the DT9816 module Using software specify the C T clock source as external and specify a clock divider between 2 and 65534 to determine the actual frequency at which to pace the counter timer operation For example if you connect a 6 MHz external C T clock and use a clock divider of 2 the resulting C T output frequency is 3 MHz Counter timer operations start on the falling edge of the Counter 0 In signal Gate Types The edge or level of the Counter 0 Gate signal determines when a counter timer operation is enabled Using software you can specify one of the following gate types None A software command enables any counter timer operation immediately after execution e Logic high level external gate input Enables a counter timer operation when Counter 0 Gate is high and disables a counter timer operation when Counter 0 Gate is low Note that this gate type is used for event counting and rate generation modes refer to page 69 for more information about these modes 68 Principles of Operation Pulse Duty Cycles Counter timer output signals from the DT9816 module are high to low going sign
11. Function To verify the analog input operation of your DT9816 module using the Chart Recorder function of the GO application do the following 1 Connect a known voltage source such as the output of a function generator to analog input channel 0 on the DT9816 module single ended mode Refer to page 37 for an example of how to connect a single ended analog input Under Visible Channels on the Chart Recorder tab ensure that only channel 0 is selected Click Start Recording and enter Test for the filename The analog input data from channel 0 is displayed on the screen and logged to the Test xls file After a few seconds click Stop Recording Launch Excel and open the file called Test xls to review the data you just recorded Verifying the Operation of a Module Using the Voltmeter Function To verify the analog input operation of your DT9816 module using the Voltmeter function of the GO application do the following 1 Connect a known voltage source such as the output of a function generator to analog input channel 0 on the DT9816 module single ended mode Refer to page 37 for an example of how to connect a single ended analog input 2 Under Visible Channels on the Voltmeter tab ensure that only channel 0 is selected 3 Click Normal under Display Settings The analog input data from analog input channel 0 is converted into digital format and displayed Note that the 5 digit display is refreshed twice pe
12. Options DT9816 Software Trigger Support OLSSC_SUP_SOFTTRIG A D Yes D A DIN DOUT C T Yes External Trigger Support OLSSC_SUP_EXTERNTRIG No Yes Positive Threshold Trigger Support OLSSC_SUP_THRESHTRIGPOS Negative Threshold Trigger Support OLSSC_SUP_THRESHTRIGNEG Analog Event Trigger Support OLSSC_SUP_ANALOGEVENTTRIG Digital Event Trigger Support OLSSC_SUP_DIGITALEVENTTRIG Timer Event Trigger Support OLSSC_SUP_TIMEREVENTTRIG Number of Extra Triggers OLSSC_NUMEXTRATRIGGERS 18 0 0 0 a Falling edge external triggers are supported through the OLSCC NUMEXTRATRIGGERS capability Supported Device Driver Capabilities Clocks Table 15 DT9816 Clock Options DT9816 A D D A DIN DOUT C T Internal Clock Support OLSSC SUP INTCLOCK Yes Yes External Clock Support OLSSC SUP EXTCLOCK Yes Yes Simultaneous Input Output on a Single Clock Signal OLSSC SIMULTANEOUS CLOCKING Yes Number of Extra Clocks OLSSC NUMEXTRACLOCKS 0 0 0 0 Base Clock Frequency OLSSCE BASECLOCK 48 MHz 0 0 12 MHz Maximum External Clock Divider OLSSCE MAXCLOCKDIVIDER 2 1 1 65534 Minimum External Clock Divider OLSSCE MINCLOCKDIVIDER 1 1 1 2 Maximum Throughput OLSSCE MAXTHROUGHPUT 150 kHz 0 0 6 MHz Minimum Throughput OLSSCE MINTHROUGHPUT 60 Hz 0 0 60 Hz a The module only supports even number values fo
13. Signals to the Module 33 Preparing to Wire Signals 0 000 000 cee eee eee 35 Wiring Recommendations Jo Wiring Locations 1 2 0 6 cece eens 35 Connecting Single Ended Analog Input Signals 37 Connecting Digital I O Signals oooo mmmmmmmooo o o 38 Connecting Counter Timer Signals oooooooooom o 39 Connecting Signals for Event Counting ag Connecting Signals for Frequency Measurement 41 Connecting Signals for Rate Generation 42 Chapter 5 Verifying the Operation of a Module 43 OVEIVIEW iced aa A oc e RE Yu ER 45 Using the Oscilloscope Function 47 Using the Chart Recorder Function 48 Using the Voltmeter Function o ooo o oooccocccccoccc coo 49 Using the File Viewer Tab 50 Using the Digital Input Function 51 Using the Digital Output Function 52 Using the Counter Function 53 Using the Rate Generator Function 54 Part 2 Using Your Module 55 Chapter 6 Principles of Operation 57 Analog Input Features 00 0 eee eee eee eee 59 Input Resolution oooooocooorococcorrrrraccn o 59 Analog Input Channels 060 0c cece eee a Specifying a Single Analog Input Channel 60 Specifying One or More Analog Input Channels 60
14. Use to allocate a buffer of the specified number of samples each sample is 2 bytes Use to put the buffer on the ready queue A minimum of three buffers is recommended Programming Flowcharts Deal with A D Messages and Buffers Error returned Buffer reused message returned Yes Queue Yes message returned Report the error Increment a counter if desired Report the condition q Go to the next page The most likely error message is OLDA_WM_OVERRUN The buffer reused message is OLDA_WM_BUFFER_REUSED The queue messages are OLDA_WM_QUEUE_DONE and OLDA_WM_QUEUE_STOPPED After reporting that the acquisition has stopped you can clean up the operation see page 105 101 Chapter 8 Deal with A D Messages and Buffers cont C Continued from previous page The buffer done message is OLDA_WM_BUFFER_DONE Use olDaGetBuffer to retrieve the buffer from the done queue and get a pointer to the buffer Buffer done Yes message returned Process data olDaGetBuffer y olDmGetValidSamples No Use olDmGetValidSamples to determine the number of samples in the buffer e _ o o olDmCopyFromBuffer v Process the data buffer in your program olDaPutBuffer Use olDaPutBuffer to recycle the buffer so that the subsystem can
15. for an external clock source the clock divider used You can generate an output signal from Counter 0 Out with a frequency of 60 Hz to 6 MHz To specify rate generation mode use software to specify the counter timer mode as rate the C T clock source as either internal or external the clock divider 2 to 65534 if external and the active gate type low level high level or software gate Refer to page 68 for more information about gate types Make sure that the signals are wired appropriately Refer to Chapter 4 for an example of connecting a rate generation application 71 Chapter 6 72 Supported Device Driver Capabilities Dala Hone cee ps Page Rha Sh odes I EFE RA RU RR ES 79 POTS nin dt 76 E or WM vcr 76 Triggered Scu lada conri if cu ia ali etici 78 Synchronous Digital I O cesses e mm 79 Channels coro hase nce ls qox 79 jl RM RhoA een aR eta EE 80 Dor m 80 BResol Bell 1103 560350 81 Duro DT 82 Gur o PR EROE POE ERRO MORETTA ROERO 83 Counter THORS sicci seed cules EEES Shane heeds Ledeen deed 84 Miscelaneos idk iG re OR eei 86 73 Chapter 7 74 The DT9816 Device Driver provides support for the analog input A D digital input DIN digital output DOUT and counter timer C T subsystems on the DT9816 module Table 3 DT9816 Series Subsystems DT9816 AID D A DIN DOUT C T Total Subsystems on Module 1 0 1 1 1 The tables in this chapter summarize t
16. function of the GO application do the following 1 Connect a scope or similar device that accepts a pulse output signal to the Counter 0 Out signal of your DT9816 module Refer to page 42 for an example of how to connect signals for rate generation Use the slider to change the frequency of the continuous pulse output signal If you are using a scope you can see the frequency of the pulse output signal change as you move the slider Part 2 Using Your Module Principles of Operation Analog Input Features a eri 59 Digital I O Featues i se ere ee ed a 65 Counter Timer Features eee 67 57 Chapter 6 Figure 11 shows a block diagram of the DT9816 module 42 5 V 3 A D Ch5 A D Ch4 AID Ch3 papcr gt A D Chi F 1 A D Cho External Clock External Trigger 58 AD Trigger ESD Buffered to 4000 V Reference A L A D Clock EE GE USB 2 0 Port Power Is 5V Supply t gt C T Out 0 16 Bit 4 C T Gate 0 Counter Timer CIT Ino DOUT7 Digital e e Out e DOUT 0 DIN 7 Digital e In ing DIN 0 ESD Buffered to 4000 V Figure 11 Block Diagram of the DT9816 Module Principles of Operation Analog Input Features This section describes the following fea
17. pointer to a unsigned long variable in which the data from the specified register is returned Values can range from 0 to 4 294 967 295 If DIO_PORT_CONHIG is specified for Address the value of the variable pointed to by pData is the bit mask that specifies the configuration of the digital I O lines where bits that have 0 values are input lines and bits that have 1 values are output lines If DIO_PORT_Data is specified for Address the value of the variable pointed to by pData represents the state of the digital input lines The DT9816 module has 8 digital input and 8 digital output lines 0 to 7 each Possible return values are as follows The value is out of range for the device Request not supported by subsystem Illegal device handle specified Reading from or Writing to the Digital Registers olWriteReg Syntax Include File Description Parameters Name Description Name Description ECODE olWriteReg HDEV hDev ULNG Address ULNG DataVal oldadefs h oldaapi h Writes values directly to the digital registers of the module hDev A variable of type HDEV that specifies the handle to the device Address An unsigned long variable that specifies the base address of the hardware register to write to Values are as follows DIO PORT CONFIG Port configuration register DIO PORT DATA Port data register 125 Appendix C 126 Name Description Notes
18. the analog input or analog output circuitry refer to the instructions on the Data Translation web site www datatranslation com Computer does The power supply of Check the power requirements of your the appropriate Service Pack installed not boot the computer is too system resources and if needed get a small to handle all the larger power supply consult the module s system resources specifications on page 118 of this manual USB 2 0 is not Your operating Ensure that you load the appropriate recognized system does not have Windows Service Pack version 2 for Windows XP or version 4 for Windows 2000 If you are unsure of whether you are using USB 2 0 or USB 1 1 run the Open Layers Control Panel applet described in Chapter 3 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 110 Troubleshooting Technical Support If you have difficulty using a DT9816 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 e The hardware software product you need help on e The version of th
19. the practical number of DT9816 modules that you can connect to a single USB port depends on the throughput you want to achieve Each of the hubs supports up to four modules To connect multiple DT9816 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 Click Next and or Finish in the wizard Once the firmware is loaded the wizard restarts to initiate the firmware to accept commands Click Next and or Finish again If the power supply and module are attached correctly the LED turns green Repeat these steps until you have attached the number of expansion hubs up to five and modules up to four per hub that you require Refer to Figure 3 The operating system automatically detects the USB devices as they are installed 29 Chapter 3 DT9816 Module DT9816 Module Host Computer 6 o o iid USB Cable 3 USB Cable 4 Power Supply lo Expansion Hubs for Hub i Power Supply for Hub DT9816 Module DT9816 Module USB Cables Figure 3 Attaching Multiple DT9816 Modules Using Expans
20. to the screw terminals of a DT9816 module Ground 38 Q 8 Out LED On eum 500 Q 30 D Digital Output 0 al lt DT9816 Module Figure 6 Connecting Digital Outputs 38 Wiring Signals to the Module Connecting Counter Timer Signals The DT9816 module provides one counter timer that you can use for the following operations e Event counting e Frequency measurement e Continuous pulse output rate generation This section describes how to connect counter timer signals for these operation modes Refer to Chapter 6 for more information about using the counter timers Connecting Signals for Event Counting Figure 7 shows how to connect counter timer signals to the screw terminals on the DT9816 module to perform an event counting operation using an external gate In this example the counter counts the number of rising edges that occur on the Counter 0 In signal when the Counter 0 Gate signal is in the active state as specified by software Refer to Chapter 6 for more information 39 Chapter 4 Signal Source qD 19 D 18 uc qp 16 Counter 0 Gate Ground DT9816 Module Figure 7 Connecting Counter Timer Signals for an Event Counting Operation Using an External Gate Signal Source Figure 8 shows how to connect counter timer signals to the screw terminals on the DT9816 module to
21. 104 Gr up the operation see page 109 Programming Flowcharts Event Counting Operations Initialize the device driver and get the UN device handle with olDalnitialize y i Get a handle to the C T subsystem with Specify C T subsystem element 0 olDaGetDASS i Specify the clock source as Attach an external C T with a maximum OL CLK EXTERNAL using recommended frequency of 6 MHz to olDaSetClockSource the Counter 0 In signal i Specify the clock divider using Specify a clock divider between 2 the olDaSetExternalClockDivider default and 65534 Specify the gate type as high level OL GATE HIGH LEVEL or low level OL GATE LOW LEVEL using olDaSetGateType Y Specify the mode as OL CTMODE COUNT using olDaSetCTMode v Configure the subsystem using olDaConfig v C Go to the next page 93 Chapter 8 Event Counting Operations cont F Continued from previous page y Start the operation using olDaStart 4 v Read the events counted using olDaReadEvents Y Get update ia of events total No y Stop the operation see page 104 y Release each subsystem with olDaReleaseDASS v Release the device driver and terminate the session with olDaTerminate 94 Programming Flowcharts Frequency Measurement Operations
22. 16 module supports 8 digital input lines the GO application supports all 8 lines 51 Chapter 5 52 Using the Digital Output Function To verify the digital output operation of your DT9816 module using the Digital Output function of the GO application do the following 1 Connect a device to a digital output line on the module Refer to page 38 for an example of how to connect a digital output 2 Click the switches to change the state of your device 3 Check that the device has been changed as expected For example if you connect a simple set of LEDs the LED corresponding to a line you switch on with the Digital Output function should turn green on The DT9816 module supports 8 digital output lines the GO application supports all 8 lines Verifying the Operation of a Module Using the Counter Function To verify the event counting operation of your module using the Counter function of the GO application do the following 1 Wire an external clock source to the Counter 0 In signal on your DT9816 module Refer to page 41 for an example of how to connect an external clock to the counter timer channel 2 Click 2 Seconds and click Start Counting The number of counts is displayed on the screen When 2 seconds have elapsed the operation stops automatically 53 Chapter 5 54 Using the Rate Generator Function To verify the rate generation operation of your module using the Rate Generator
23. 7 78 Gain Table 8 DT9816 Gain Options DT9816 Maximum Channel Gain List Depth OLSSC_CGLDEPTH A D ga D A DIN DOUT C T Sequential Channel Gain List Support OLSSC_SUP_SEQUENTIAL_CGL Yes OLSSC_SUP_ZEROSEQUENTIAL_CGL Random Channel Gain List Support OLSSC_SUP_RANDOM_CGL Zero Start Sequential Channel Gain List Support Yes Yes Simultaneous Sample and Hold Support OLSSC_SUP_SIMULTANEOUS_SH Yes Channel List Inhibit Support OLSSC_SUP_CHANNELLIST_INHIBIT Programmable Gain Support OLSSC_SUP_PROGRAMGAIN Yes Number of Gains OLSSC_NUMGAINS Noncontiguous Channels in Channel Gain List OLSSC_NONCONTIGUOUS_CHANNELNUM AutoRanging Support OLSSC_SUP_SINGLEVALUE_AUTORANGE a You cannot specify the same channel more than once in the list b Place channels in your CGL in ascending order All channels are sampled simultaneously with data returned in ascending channel order if your CGL does not match you will have unexpected results Supported Device Driver Capabilities Synchronous Digital I O Table 9 DT9816 Synchronous Digital I O Options DT9816 Synchronous Digital I O Support OLSSC_SUP_SYNCHRONOUS_DIGITALIO A D D A DIN DOUT C T Maximum Synchronous Digital I O Value OLSSC_MAX_DIGITALIOLIST_VALUE Channels Table 10 DT9816 Channel Options DT9816 Number of Channels
24. CONNECT BURST 75 Chapter 7 76 Buffering Table 5 DT9816 Buffering Options DT9816 A D D A DIN DOUT C T Buffer Support OLSSC SUP BUFFERING Yes Single Buffer Wrap Mode Support OLSSC SUP WRPSINGLE Yes Multiple Buffer Wrap Mode Support OLSSC SUP WRPMULTIPLE Yes Inprocess Buffer Flush Support OLSSC SUP INPROCESSFLUSH Yes Waveform Generation Mode Support OLSSC SUP WAVEFORM MODE Table 6 DT9816 DMA Options DT9816 A D D A DIN DOUT C T Number of DMA Channels OLSSC NUMDMACHANS 0 0 Supports Gap Free Data with No DMA OLSSC SUP GAPFREE NODMA Yes Supports Gap Free Data with Single DMA OLSSC SUP GAPFREE SINGLEDMA Supports Gap Free Data with Dual DMA OLSSC SUP GAPFREE DUALDMA Supported Device Driver Capabilities Triggered Scan Mode Table 7 DT9816 Triggered Scan Mode Options DT9816 A D D A DIN DOUT C T Triggered Scan Support OLSSC SUP TRIGSCAN Maximum Number of CGL Scans per Trigger OLSSC MAXMULTISCAN 0 0 0 0 Supports Scan per Trigger Event Triggered Scan OLSSC SUP RETRIGGER SCAN PER TRIGGER Supports Internal Retriggered Triggered Scan OLSSC SUP RETRIGGER INTERNAL Extra Retrigger Support OLSSC SUP RETRIGGER EXTRA Maximum Retrigger Frequency OLSSCE MAXRETRIGGER 0 0 0 0 Minimum Retrigger Frequency OLSSCE MINRETRIGGER 0 0 0 0 77 Chapter
25. DATA TRANSLATION UM 21336 C DT9816 User s Manual Third Edition March 2006 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 2006 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 DT Open Layers DataAcq SDK DataAcq OMNI CD DT LV Link and DTx EZ are trademarks of Data Translation Inc All other brand and product names are trademarks or registered trademarks of their respective companies Radio and Television Interference This equipment has been tested and
26. Measure Foundry is 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 DataAcq SDK Use the Data Acq SDK if you want to develop your own application software for the DT9816 module using the Microsoft C compiler the DataAcq SDK complies with the DT Open Layers standard DTx EZ Use this optional software package if you want to use ActiveX controls to access the capabilities of the DT9816 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 DT LV Link Use this optional software package if you want to use the LabVIEW graphical programming language to access the capabilities of the DT9816 module Overview Getting Started Procedure The flow diagram shown in Figure 1 illustrates the steps needed to get started using the DT9816 module This diagram is repeated in each chapter the shaded area in the diagram shows you where you are in the getting started procedure Fo Prepare to Use the Module see Chapter 2 starting on page 21 Set Up and Install the Module see Chapter 3 starting on pag
27. Pulse Output Operations es i 97 87 Chapter 8 88 The following flowcharts show the steps required to perform analog input digital I O and counter timer operations on the DT9816 module using DT Open Layers For illustration purposes the DataAcq SDK functions are shown however the concepts apply to all DT Open Layers compatible software Note that many steps represent several substeps if you are unfamiliar with the detailed operations involved with any one step refer to the indicated page for detailed information Optional steps appear in shaded boxes Programming Flowcharts Single Value Operations Initialize the device driver and get the device handle with olDalnitialize Get a handle to the subsystem with olDaGetDASS Set the data flow to OL_DF_SINGLEVALUE using olDaSetDataFlow y Set the resolution with olDaSetResolution y Configure the subsystem using olDaConfig i C Go to the next page Specify A D subsystem 0 for an analog input operation DIN subsystem 0 for a digital input operation or DOUT subsystem 1 for a digital output operation b The DIN and the DOUT subsystems use separate digital I O lines The resolution of the DIN and DOUT subsystems is fixed at 8 bits 89 Chapter 8 Single Value Operations cont C Continued from previous page 2 For the A D subsystem read a single analog input value from the spe
28. US_PRETRI G75 OLSSC_SUP_CTMODE_COUNT 84 OLSSC_SUP_CTMODE_MEASURE 84 OLSSC_SUP_CTMODE_ONESHOT 84 OLSSC_SUP_CTMODE_ONESHOT_ RPT 84 OLSSC_SUP_CTMODE_RATE 84 OLSSC_SUP_CTMODE_UP_DOWN 84 OLSSC_SUP_DIFFERENTIAL 79 OLSSC_SUP_EXTCLOCK 83 OLSSC_SUP_EXTERNTRIG 82 OLSSC_SUP_GAPFREE_NODMA 76 OLSSC_SUP_GATE_HIGH_EDGE 84 OLSSC_SUP_GATE_HIGH_LEVEL 84 OLSSC_SUP_GATE_LOW_EDGE 85 OLSSC_SUP_GATE_LOW_LEVEL 84 OLSSC_SUP_GATE_NONE 84 OLSSC_SUP_INPROCESSFLUSH 76 OLSSC_SUP_INTCLOCK 83 OLSSC_SUP_INTERRUPT 86 OLSSC_SUP_PLS_HIGH2LOW 84 OLSSC_SUP_PLS_LOW2HIGH 84 OLSSC_SUP_POSTMESSAGE 86 OLSSC_SUP_PROCESSOR 86 OLSSC_SUP_PROGRAMGAIN 78 OLSSC_SUP_RANDOM_CGL 78 OLSSC_SUP_RETRIGGER_EXTRA 77 OLSSC_SUP_RETRIGGER_INTERNA L77 OLSSC_SUP_RETRIGGER_SCAN_ PER_TRIGGER 77 OLSSC_SUP_SEQUENTIAL_CGL 78 OLSSC_SUP_SIMULTANEOUS_CLO CKING 83 OLSSC_SUP_SIMULTANEOUS_STA RT 86 OLSSC_SUP_SINGLEENDED 79 Index OLSSC_SUP_SINGLEVALUE 75 OLSSC_SUP_SOFTTRIG 82 OLSSC_SUP_SWCAL 86 OLSSC_SUP_SYNCHRONOUS_ DIGITALIO 79 OLSSC_SUP_THRESHTRIGPOS 82 OLSSC_SUP_TRIGSCAN 77 OLSSC_SUP_WRPMULTIPLE 76 OLSSC_SUP_WRPSINGLE 76 OLSSC_SUP_ZEROSEQUENTIAL_C GL 78 OLSSCE_BASECLOCK 83 OLSSCE_MAX_THROUGHPUT 83 OLSSCE_MAXCLOCKDIVIDER 83 OLSSCE_MAXRETRIGGER 77 OLSSCE_MIN_THROUGHPUT 83 OLSSCE_MINCLOCKDIVIDER 83 OLSSCE_MINRETRIGGER 77 olWriteReg 125 one shot pulse output 84 Open Layers Control Panel applet 23 110 operation modes continuous scan 62 single value ana
29. ailable Check that your system meets the requirements stated in Chapter 2 Check that you have installed your hardware properly using the instructions in Chapter 3 Check that you have installed and configured the device driver properly using the instructions in Chapter 3 Check that you have wired your signals properly using the instructions in Chapter 4 Search the DT Knowledgebase in the Support section of the Data Translation web site at www datatranslation com for an answer to your problem 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 18 to isolate and solve the problem If you cannot identify the problem refer to page 109 Troubleshooting Table 18 Troubleshooting Problems Symptom Possible Cause Possible Solution Module does not respond The module configuration is incorrect Check the configuration of your device driver see the instructions in Chapter 3 The module is damaged Contact Data Translation for technical support refer to page 111 Intermittent operation Loose connections or vibrations exist The module is overheating Check your wiring and tighten any loose connections or cushion vibration sources see the instructions in Chapter 4 Check environmental and ambient temperature consult the m
30. als The low portion of the total pulse output period is the active portion of the counter timer clock output signal The duty cycle or pulse width indicates the percentage of the total 6 pulse output period that is active In rate generation mode the duty cycle is fixed at 50 for the DT9816 module Figure 14 illustrates a high to low going output pulse with a duty cycle of 50 Total Pulse Period EE high pulse low pulse PM Active Pulse Width Figure 14 Example of a Pulse Output Signal with a 50 Duty Cycle High to Low Going Counter Timer Operation Modes The DT9816 module supports the following counter timer operation modes Eventcounting Frequency measurement Rate generation 69 Chapter 6 70 Event Counting Use event counting mode if you want to count the number of falling edges that occur on Counter 0 In when the gate is active high level Refer to page 68 for information about specifying the active gate type You can count a maximum of 65 536 events before the counter rolls over to 0 and starts counting again For event counting operations use software to specify the counter timer mode as count the C T clock source as external and the active gate type as high level Make sure that the signals are wired appropriately Refer to Chapter 4 for an example of connecting an event counting application Frequency Measurement Using software specify the counter timer mod
31. ber of differential channels 79 DMA channels 76 extra clocks 83 extra triggers 82 filters 80 gains 78 I O channels 79 resolutions 81 scans per trigger 77 single ended channels 79 voltage ranges 80 Nyquist Theorem 61 O OLDA_WM_BUFFER_ DONE 103 OLDA_WM_BUFFER_DONE 102 OLDA_WM_BUFFER_REUSED 101 Index OLDA_WM_OVERRUN 101 OLDA_WM_QUEUE_DONE 101 OLDA_WM_QUEUE_STOPPED 101 olDaAbort 104 olDaConfig in continuous A D operations 92 in event counting operations 93 in frequency measurement operations 96 in pulse output operations 98 in single value operations 89 olDaFlushBuffers 105 olDaFlushFromBufferInprocess 103 olDaGetBuffer 102 105 olDaGetDASS in continuous A D operations 91 in event counting operations 93 in frequency measurement operations 95 in pulse output operations 97 in single value operations 89 olDaGetQueueSize 103 105 olDaGetSingleValue 90 olDaGetSSCaps 74 olDaGetSSCapsEx 74 olDalInitialize in continuous A D operations 91 in event counting operations 93 in frequency measurement operations 95 in pulse output operations 97 in single value operations 89 olDaMeasureFrequency 96 olDaPutBuffer 100 102 olDaPutSingleValue 90 olDaReadEvents 94 olDaReleaseDASS in continuous A D operations 105 in continuous D A operations 105 in event counting operations 94 in frequency measurement operations 96 in pulse output operations 98 in single value operations 90 olDaReset 104 olDaSetChannelListEntry 99 olDaS
32. cified channel 0 to 5 For the DIN subsystem read the value of the digital input port Yes Acquire a single value using Acquirin E i olDaGetSingleValue data Acquire output another value No Release the subsystem using olDaReleaseDASS i Release the driver and terminate the session using olDaTerminate Yes Output a single value using olDaPutSingleValue For the DOUT subsystem output a value to the digital output port 90 Programming Flowcharts Continuous A D Operations Initialize the device driver and get the device handle with olDalnitialize Get a handle to the A D subsystem with olDaGetDASS i Set the data flow using olDaSetDataFlow i Set up the analog input channel gain list see page 99 v Set up the clocks and triggers see page 99 v E Go to the next page Specify OL_DF_CONTINUOUS the default value 91 Chapter 8 92 Continuous A D Operations cont NN Continued from previous page i Set up buffering see page 100 i Configure the subsystem using After you configure the subsystem you can use olDaConfig olDaGetClockFrequency to return the actual frequency of the internal clock Start the operation with olDaStart i Deal with messages and buffers see page 101 __ Stop the operation see page
33. curs while the ADC is busy performing a conversion from the previous A D sample clock pulse The host computer can clear this error To avoid this error use a slower sampling rate or increase the buffer size and or number of buffers 64 Principles of Operation Digital VO Features This section describes the following features of digital I O operations on the DT9816 Digital I O lines e Resolution Operation modes Digital I O Lines The DT9816 module includes 8 digital input and 8 digital output lines Using DT Open Layers 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 66 for more information about single value operations A digital line is high if its value is 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 You can also read or write to the digital I O lines using functions that access the hardware registers on the module directly Refer to Appendix C starting on page 121 for more information on these functions Resolution The DT9816 provides 16 digital lines that are dedicated 8 each to the DIN and DOUT subsystems By default these lines are organized as two 8 bit ports Because these are dedicated lines you cannot combine the digital ports into one port to change resolution 65 Chapter 6 Operation Modes The DT9816 support
34. diately the valid samples are marked and the buffer is placed on the done queue No messages are generated In addition olDaReset reinitializes the subsystem to the driver s default state Programming Flowcharts Clean Up the Operation C olDaFlushBuffers v olDaGetQueueSize dq v olDaGetBuffer v olDmFreeBuffer Yes More buffers to free olDaReleaseDASS i C olDaTerminate Use to flush all buffers on the ready and or inprocess queues to the done queue Use to determine the number of buffers on the done queue Use to retrieve each buffer on the done queue Use to free each buffer retrieved from the done queue Use to release each subsystem Use to release the device driver and terminate the session 105 Chapter 8 106 Troubleshooting CGencral heckiigt ida tee eee 108 Technical Suppaif ia eran 111 If Your Module Needs Factory Service 112 107 Chapter 9 108 General Checklist Should you experience problems using a DT9816 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 Check the ECON CD for any README files and ensure that you have used the latest installation and configuration information av
35. dule to the PC connect your signals to the module and run the GO application from the Data Translation Inc ECONseries program group The GO application provides the following instrument like functions for data acquisition control and display the software shows only those functions that are supported by your module e Oscilloscope Stream plot and analyze data from up to six analog input channels Zoom in or out of live signals Select the trigger type level and channel Print your data or save it to an Excel file e Chart Recorder Record up to 31 990 data points from up to six analog input channels Log data to an Excel file e Voltmeter Measure data from up to six analog input channels and view it in a 5 digit digital display Display the maximum or true root mean square RMS value File Viewer Load a previously saved Excel file Scroll zoom or print your data e Digital Input Monitor the status of the digital inputs using LEDs 45 Chapter 5 46 e Digital Output Control the state of the digital outputs using switches e Counter Count pulses from the counter timer for 1 2 or 5 seconds or for an unlimited time e Rate Generator Control the frequency of a continuous pulse output signal from the counter timer The GO application automatically detects and configures the first installed ECONseries module If you have multiple ECONseries modules installed
36. e 25 Wire Signals to the Module see Chapter 4 starting on page 33 Verify the Operation of the Module see Chapter 5 starting on page 43 Figure 1 Getting Started Flow Diagram 17 Chapter 1 18 Part 1 Getting Started Preparing to Use a Module pre eiee de E E E 22 Checking the System Requirements cooociomcoonmocins 23 Installing e ROSE 0000 ds y RR EE RR Erbe 24 21 Chapter 2 Prepare to Use the Module this chapter Set Up and Install the Module see Chapter 3 starting on page 25 Wire Signals to the Module see Chapter 4 starting on page 33 A Verify the Operation of the Module N W see Chapter 5 starting on page 43 pr Unpacking 22 Open the shipping box and verify that the following items are present e DT9816 module e ECON CD e USB cable 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 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 see Data Translation s web site www datatranslation com for contact information Once you have unpacked your module check the system requirements as described in the next section Preparing to Use a Module Checking the System Requirements For reliable ope
37. e ECON 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 111 Chapter 9 112 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 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 The name and telephone number of your nearest distributor are listed on Data Translation s web site All return shipments to Data Translation must be marked with the correct RMA number to ensure proper processing 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 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 A Specifications 113 Appendix A 114 Table 19 lists the speci
38. e as count the clock source as external and then call the olDaMeasureFrequency function Our function uses the Windows timer which has a resolution of 1 ms to specify the duration If you need more accuracy than the Windows timer provides you can connect a pulse of a known duration to the Counter 0 Gate signal If you are using a known pulse connected to the gate pin for the duration specify the active gate in software high level When the operation starts read the number of counts that occurred when the gate was active You can determine the frequency of the clock input signal using the following equation Frequency Measurement _Number of Events Measurement Period Principles of Operation Make sure that the signals are wired appropriately Refer to Chapter 4 for an example of connecting a frequency measurement application Rate Generation Use rate generation mode to generate a continuous pulse output signal from Counter 0 Out this mode is sometimes referred to as continuous pulse output or pulse train output The pulse output operation is enabled whenever the Counter 0 Gate signal is active high level or software gate While the pulse output operation is enabled the counter outputs a high to low going pulse with a pulse width of 50 continuously As soon as the operation is disabled rate generation stops The frequency of the output is determined by the C T clock source either internal or external and
39. ements 23 T technical support 111 threshold trigger 82 throughput maximum 83 minimum 83 transferring data analog input 63 triggered scan 77 extra retrigger 77 internal retrigger 77 number of scans per trigger 77 retrigger frequency 77 scan per trigger 77 triggers 99 analog input 63 analog threshold 82 external 82 number of extra 82 setting parameters for 99 software 63 82 troubleshooting procedure 108 service and support procedure 111 troubleshooting table 109 U units counter timer 67 unpacking 22 up down counting 84 USB cable 28 29 V Visual Basic programs 16 Visual C programs 16 voltage ranges 60 number of 80 W wiring signals analog inputs 37 Index digital inputs and outputs 38 event counting 39 frequency measurement 41 methods 35 preparing 35 pulse output 42 recommendations 35 wrap mode 100 analog input 64 writing programs in C C 16 in Visual Basic 16 in Visual C 16 Z zero start sequential channel gain list 78 135 Index 136
40. er 75 scan operations 62 continuous analog output 75 continuous counter timer 75 continuous digital I O 75 Control Panel applet 23 110 conversion modes continuous scan mode 62 digital I O 66 single value analog input 61 conversion rate 62 counter timer channels 67 79 clock sources 68 83 edge to edge measurement mode 84 event counting 84 gate types 68 high edge gate type 84 high level gate type 84 high to low output pulse 84 internal gate type 84 low edge gate type 85 low level gate type 84 low to high output pulse 84 one shot mode 84 quadrature decoder 85 rate generation mode 84 repetitive one shot mode 84 subsystem specifications 117 up down counting 84 counter timers connecting event counting signals 39 connecting frequency measurement signals 41 connecting pulse output signals 42 Index counting events 70 customer service 112 D data encoding 86 data flow modes continuous analog input operations 91 continuous C T 75 continuous digital input 75 continuous post trigger 75 continuous pre trigger 75 single value 75 single value operations 89 data format and transfer analog input 63 data processing 86 DataAcq SDK 16 device driver 15 configuring 31 installing 24 differential channels 79 digital I O lines 65 operation modes 66 subsystem specifications 116 digital I O features resolution 65 digital inputs 38 digital outputs 38 digital register functions olReadReg 123 olWr
41. etChannelListSize 99 olDaSetClockFrequency 99 olDaSetClockSource 93 95 97 99 olDaSetCTMode in event counting operations 93 in frequency measurement operations 95 in pulse output operations 98 olDaSetDataFlow in continuous A D operations 91 in single value operations 89 olDaSetExternalClockDivider 93 95 97 olDaSetGainListEntry 99 olDaSetGateType 93 97 olDaSetPulseType 98 olDaSetResolution in single value operations 89 olDaSetTrigger 99 olDaSetWndHandle 100 olDaSetWrapMode 100 olDaStart in continuous A D operations 92 in event counting operations 94 in pulse output operations 98 olDaStop 104 olDaTerminate in continuous A D operations 105 131 Index 132 in continuous D A operations 105 in event counting operations 94 in frequency measurement operations 96 in pulse output operations 98 in single value operations 90 olDmAllocBuffer 100 103 olDmCallocBuffer 103 olDmCopyFromBuffer 102 olDmFreeBuffer 105 olDmGetValidSamples 102 olDmMallocBuffer 103 olReadReg 123 OLSSC_CGLDEPTH 78 OLSSC_FIFO_SIZE_IN_K 86 OLSSC_MAX_DIGITALIOLIST_VAL UE 79 OLSSC_MAXDICHANS 79 OLSSC_MAXMULTISCAN 77 OLSSC_MAXSECHANS 79 OLSSC_NUMCHANNELS 79 OLSSC_NUMDMACHANS 76 OLSSC_NUMEXTRACLOCKS 83 OLSSC_NUMEXTRATRIGGERS 82 OLSSC_NUMFILTERS 80 OLSSC_NUMGAINS 78 OLSSC_NUMRANGES 80 OLSSC_NUMRESOLUTIONS 81 OLSSC_SUP_BINARY 86 OLSSC_SUP_BUFFERING 76 OLSSC_SUP_CHANNELLIST_ INHIBIT 78 OLSSC_SUP_CONTINUOUS 75 OLSSC_SUP_CONTINUO
42. fications for the A D subsystem on the DT9816 module Table 19 A D Subsystem Specifications Feature DT9816 Specifications Number of analog input channels 6 single ended Number of gains 21 2 Resolution 16 bit Data encoding offset binary System accuracy to of FSR Averaged over 50 readings 0 08 Range 5 V 10 V Nonlinearity 0 015 Differential nonlinearity 0 003 Inherent quantizing error LSB Drift Zero 25 uV C Gain 50 ppm C Differential linearity monotonic to 14 bits Input impedance Off channel On channel 10 MQ 10 pf Input bias current 10 nA Maximum input voltage without damage Power on 35 V Power off 20 V Specifications Table 19 A D Subsystem Specifications cont Feature DT9816 Specifications A D conversion time 4 us DT9816 A 8 us DT9816 Channel acquisition time Y LSB 1 us Sample and hold Aperture uncertainty 1 ns Aperture delay 35 ns Aperture match 5 ns Gain match 0 05 Zero match 3 0 mV Throughput 50 kHz per channel DT9816 150 kHz per channel DT9816 A ESD protection per spec Arc 8 kV Contact 4 kV Reference 2 5V Monotonicity Yes a Very high input impedance minimizes any source error 115 Table 20 lists the specifications for the digital input DIN and digital output DOUT subsyste
43. found to comply with CISPR EN55022 Class A and EN50082 1 CE requirements and also with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Changes or modifications to this equipment not expressly approved by Data Translation could void your authority to operate the equipment under Part 15 of the FCC Rules Note This product was verified to meet FCC requirements under test conditions that included use of shielded cables and connectors between system components It is important that you use shielded cables and connectors to reduce the possibility of causing interference to radio television and other electronic devices Canadian Department of Communications Statement This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le pr sent appareil num
44. hannels using an analog input channel gain list Group the channels in the list sequentially starting either with 0 or with any other analog input channel in ascending order You cannot specify the same channel more than once in the list Using software specify the channels you want to sample You can enter up to 6 entries in the channel gain list for this module Refer to page 61 for more information about the supported conversion modes Input Ranges and Gains The DT9816 provides an input range of 10 to 10 V or 5 to 5 V Use software to specify the range as 10 to 10 V with a gain of 1 or 5 to 5 V with a gain of 2 Note This is the range for the entire analog input subsystem not the range per channel 60 Principles of Operation Input Sample Clock Sources You can pace an analog input operation on a DT9816 module using a software clock source Using software specify the clock source as internal then specify the clock frequency at which to pace the operation The DT9816 A supports an A D clock frequency of 60 Hz to 150 MHz the DT9816 supports an A D clock frequency of 60 Hz to 50 MHz According to sampling theory Nyquist Theorem specify a frequency that is at least twice as fast as the input s highest frequency component For example to accurately sample a 2 kHz signal specify a sampling frequency of at least 4 kHz Doing so avoids an error condition called aliasing in which high frequency input co
45. he features available for use with the Data Acq SDK and the DT9816 module The DataAcq SDK provides functions that return support information for specified subsystem capabilities at run time 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 parameter used to describe that capability in the DataAcq SDK Note Blank fields represent unsupported options The Data Acq SDK uses the functions olDaGetSSCaps for those queries starting with OLSSC and olDaGetSSCapsEx for those queries starting with OLSSCE to return the supported subsystem capabilities for a device For more information refer to the description of these functions in the Data Acq SDK online help See the DataAcg User s Manual for information on launching this help file Supported Device Driver Capabilities Data Flow Table 4 DT9816 Data Flow Options DT9816 A D D A DIN DOUT C T Single Value Operation Support OLSSC SUP SINGLEVALUE Yes Yes Yes No Continuous Operation Support OLSSC SUP CONTINUOUS Yes Yes Continuous Operation until Trigger Event Support OLSSC SUP CONTINUOUS PRETRIG Continuous Operation before amp after Trigger Event OLSSC SUP CONTINUOUS ABOUTTRIG DT Connect Support OLSSC SUP DTCONNECT Continuous DT Connect Support OLSSC SUP DTCONNECT CONTINUOUS Burst DT Connect Support OLSSC SUP DT
46. igger The external trigger is initiated by a high to low transition on the A D external TTL trigger input Data Format and Transfer DT9816 modules use binary data encoding where 0000 represents negative full scale and FFFFh represents positive full scale Use software to specify the data encoding as binary The ADC outputs FFFFh for above range signals and 0000 for below range signals 63 Chapter 6 Before you begin acquiring data you must allocate buffers to hold the data A Buffer Done message is returned whenever a buffer is filled This allows you to move and or process the data as needed We recommend that you allocate a minimum of three buffers for analog input operations specifying one of the following buffer wrap modes in software None Data is written to multiple allocated input buffers continuously when no more empty buffers are available the operation stops If wrap mode is none the module guarantees gap free data Multiple Data is written to multiple allocated input buffers continuously if no more empty buffers are available the module overwrites the data in the current buffer starting with the first location in the buffer This process continues indefinitely until you stop it If wrap mode is multiple the module does not guarantee gap free data Error Conditions An overrun condition is reported if the A D sample clock rate is too fast This error is reported if a new A D sample clock pulse oc
47. iler this manual describes how to use the DT Open Layers DataAcq SDK to access the capabilities of Data Translation data acquisition devices DTx EZ Getting Started Manual UM 15428 This manual describes how to use the ActiveX controls provided in DTx EZ to access the capabilities of Data Translation data acquisition devices in Microsoft Visual Basic or Visual C 11 About this Manual DT LV Link Getting Started Manual UM 15790 This manual describes how to use DT 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 2000 or Windows XP documentation USB web site http www usb org Where To Get Help 12 Should you run into problems installing or using a DT9816 module the Data Translation Technical Support Department is available to provide technical assistance Refer to Chapter 9 for more information If you are outside the United States or Canada call your local distributor whose number is listed on Data Translation s web site www datatranslation com Overview Key Hardware Features 2 0 cine a 14 Supported SOMWATG coin 15 17 Getting Started Proced
48. ion Hubs 30 Setting Up and Installing the Module Changing the Name of a Module Optional To change the name of a DT9816 module configure the device driver as follows 1 From the Windows Start menu select Settings Control Panel 2 From the Control Panel double click Open Layers Control Panel The Data Acquisition Control Panel dialog box appears 3 If you want to rename the module click the DT9816 module that you want to rename and then click Edit Name 4 Enter a new name for the module and then click OK The name is used to identify the module in all subsequent applications 5 When you are finished configuring the module click Close 6 Repeat steps 3 to 5 for the other modules that you want to configure 7 Close the Data Acquisition Control Panel dialog box Continue with the instructions on wiring in Chapter 4 starting on page 33 31 Chapter 3 32 Y Wiring Signals to the Module Preparing to Wie Signals coca cet vad tem eee t 35 Connecting Single Ended Analog Input Signals 37 Connecting Digital IZO Signals oc saos e ne ee 38 Connecting Counter Timer Signals 39 33 Chapter 4 34 Prepare to Use a Module see Chapter 2 starting on page 21 ecu Set Up and Ins tall the Module see Chapter 3 starting on page 25 Wire Signals to the Module this chapter Verify the Operation of the Module see Chapter
49. iteReg 125 DT Measure Foundry 16 24 DT9810 Device Driver 15 DT LV Link 16 24 DTx EZ 16 24 duty cycle 69 E edge to edge measurement mode 84 environmental specifications 118 errors analog input 64 101 event counting 70 84 how to perform 93 event counting wiring 39 external clock 68 83 external clock divider maximum 83 minimum 83 external digital trigger 82 extra retrigger 77 F factory service 112 features 14 formatting data analog input 63 frequency base clock 83 internal A D clock 61 83 99 internal A D sample clock 83 internal C T clock 68 83 internal retrigger clock 77 frequency measurement 41 70 how to perform 95 G gain 129 Index 130 analog input 60 number of 78 gap free data 76 gate type 68 93 high edge 84 high level 84 internal 84 low edge 85 low level 84 generating pulses 71 GO application 15 running 45 H hardware features 14 high edge gate type 84 high level gate type 84 hot swapping 27 j inprocess buffers 76 103 input channels 59 ranges 60 sample clock sources 61 installing the software 24 internal clock 68 83 93 95 97 99 gate type 84 retrigger 77 interrupts 86 L LabVIEW 16 LongtoFreq macro 96 low edge gate type 85 low level gate type 84 M macro 96 MATLAB 16 measuring frequency 70 messages dealing with for A D operations 101 error 101 multiple buffer wrap mode 76 100 multiple channels analog input 60 N num
50. ith data acquisition principles and that you understand your application How this Manual is Organized This manual is organized as follows Chapter 1 Overview describes the major features of the DT9816 module as well as the supported software and accessories for the module e Chapter 2 Preparing to Use a Module describes how to unpack the module check the system requirements and install the software e Chapter 3 Setting Up and Installing the Module describes how to install the module and how to configure the device driver About this Manual 10 Chapter 4 Wiring Signals to the Module describes how to wire signals to the module Chapter 5 Verifying the Operation of a Module describes how to verify the operation of the module with the GO application Chapter 6 Principles of Operation describes all of the features of the DT9816 module and how to use them in your application Chapter 7 Supported Device Driver Capabilities lists the supported subsystems and the associated capabilities accessible using the device driver for the DT9816 module Chapter 8 Programming Flowcharts describes the processes you must follow to program the subsystems of a DT9816 module using DT Open Layers compliant software Chapter 9 Troubleshooting provides information that you can use to resolve problems with a DT9816 module should they occur Appendix A Specifications
51. log input 61 single value digital I O 66 output pulses 84 output pulses 42 outputting pulses 71 P physical specifications 118 positive threshold trigger 82 post trigger acquisition mode 75 power specifications 118 preparing to wire signals 35 pre trigger acquisition mode 75 programmable gain 78 pulse output how to perform 97 rate generation 71 types 69 pulse outputs 42 pulse width 69 Q quadrature decoder 85 R random channel gain list 78 ranges analog input 60 number of 80 rate generation 71 84 recommendations for wiring 35 repetitive one shot pulse output 84 requirements 23 resetting an operation 104 resolution 65 analog input 59 number of 81 retrigger clock frequency 77 returning boards to the factory 112 RMA 112 running the GO application 45 S sample clock sources 61 sample rate 62 133 Index 134 scan per trigger 77 SDK 16 sequential channel gain list 78 service and support procedure 111 simultaneous clocking 83 simultaneous start list 86 single buffer wrap mode 76 100 single channel analog input 60 single ended channels 79 number of 79 single value operations 75 89 analog input 61 digital I O 66 how to perform 89 software packages 16 software trigger 63 82 specifications 113 analog input 114 counter timer specifications 117 digital I O 116 environmental 118 physical 118 power 118 stopping an operation 104 synchronous digital I O 79 maximum value 79 system requir
52. mer Signals for a Frequency Measurement Operation Using an External Pulse 41 Chapter 4 Connecting Signals for Rate Generation Figure 10 shows how to connect counter timer signals to the screw terminals of a DT9816 module to perform a rate generation continuous pulse output operation Ground Heater e 19 Controller D U Counter 0 Out 4 Q 17 DT9816 Module Figure 10 Connecting Counter Timer Signals for a Rate Generation Operation 42 gt Verifying the Operation of a Module a s 45 Using the Oscilloscope Function 47 Using the Chart Recorder Function 48 Using the Voltmeter Function 000000 49 Using the File Viewer Tab iii 50 Using the Digital Input Function 51 Using the Digital Output Function 52 Using the Counter Function esie 53 Using the Rate Generator Function 54 43 Chapter 5 Prepare to Use a Module see Chapter 2 starting on page 21 Set Up and Ins tall the Module see Chapter 3 starting on page 25 Wire Signals to the Module see Chapter 4 starting on page 33 Verify the Operation of the Module this chapter Verifying the Operation of a Module Overview The GO application allows you to measure and control signals from your DT9816 module right out of the box Simply install the ECONseries software connect your mo
53. mponents erroneously appear as lower frequencies after sampling Analog Input Conversion Modes The DT9816 supports the following conversion modes Single value operations Continuous scan operations The following subsections describes the conversion modes in more detail Single Value Operations Single value operations are the simplest to use Using software you specify the range gain and 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 61 Chapter 6 62 Continuous Scan Mode Use continuous scan mode if you want to accurately control the period between successive simultaneous conversions of all channels in a channel gain list When it receives a software trigger the module cycles through the channel gain list acquiring and converting the data for each entry in the list this process is defined as the scan The module then wraps to the start of the channel gain list and repeats the process continuously until either the allocated buffers are filled or until you stop the operation Refer to page 63 for more information about buffers The conversion rate is determined by the frequency of the internal sample clock refer to page 61 for more information abou
54. ms on the DT9816 module Table 20 DIN DOUT Subsystem Specifications Feature DT9816 Specifications Number of digital I O lines 16 8 each dedicated Number of ports 2 8 bit Input termination Series 1 kQ Series 33 2 Q Logic family TTL Logic sense Positive true Inputs Input type Level sensitive Input logic load 1 TTL Load High input voltage 2 4 V min Low input voltage 0 8 V max Low input current 0 4 mA max Outputs High output 2 8 V min Low output 0 6 V max High output current source 4 5 mA Low output current sink 10 mA Software I O selectable Yes ESD protection per spec Arc 8 kV Contact 4 kV Specifications Table 21 lists the specifications for the C T subsystem on the DT9816 module Table 21 C T Subsystem Specifications Feature Specifications Number of counter timers 1 Counter timer modes Event counting frequency measurement rate generation Resolution 16 bit Minimum pulse width 25 ns minimum amount of time it takes a C T to recognize an input pulse Logic family TTL Inputs Level sensitive Input logic load 1 TTL Load High input voltage 2 4 V min Low input voltage 0 8 V max Low input current 0 4 mA max Outputs High output 2 8 V min Low output 0 6 V max High output current source 2 mA Low output current sink 12 mA ESD protection per spec Arc 8 kV Contact 4 kV
55. nge the directory path and or name using Browse or accept the default directory C Program Files Data Translation and then click Next Click Next to copy the files Click Finish If you want to install DT LV Link click Install Additional Software click Install now under the LabVIEW Link section and follow the installation prompts When you have finished the installation process click Quit Installer Continue with the instructions in Chapter 3 starting on page 25 9 Z Setting Up and Installing the Module Attaching Modules to the Computer Changing the Name of a Module Optional 25 Chapter 3 C Prepare to Use the Module see Chapter 2 starting on page 21 Set Up and Install the Module this chapter Wire Signals to the Module see Chapter 4 starting on page 33 Verify the Operation of the Module see Chapter 5 starting on page 43 Note The DT9816 module is factory calibrated and requires no further adjustment 26 Setting Up and Installing the Module Attaching Modules to the Computer This section describes how to attach a DT9816 module to the host computer Note Most computers have several USB ports that allow direct connection to USB devices If your application requires more DT9816 modules than you have USB ports for you can expand the number of USB devices attached to a single USB port by using ex
56. odule s specifications on page 118 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 4 Device failure error reported The 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 4 The module was removed while an operation was being performed Ensure that your module is properly connected see the instructions in Chapter 3 109 Chapter 9 Table 18 Troubleshooting Problems cont Symptom Possible Cause Possible Solution Data appears to be invalid An open connection exists Check your wiring and fix any open connections see the instructions in Chapter 4 A transducer is not connected to the channel being read The transducer is set up for differential inputs Check the transducer connections see the instructions in Chapter 4 Check your wiring and ensure that your transducer is set up for single ended inputs see the instructions in Chapter 4 The DT9816 module is out of calibration The DT9816 module is calibrated at the factory and should not require recalibration If you want to readjust the calibration of
57. ounter timer allows you to perform event counting frequency measurement and continuous pulse output rate generation operations Clocks and Triggers The DT9816 modules supports an internal trigger and clock or an external trigger and clock Use the internal trigger to start an analog input operation based on a software command or use the external trigger to start an analog input operation based on an external event Use the external clock signal to pace an analog input operation at a rate not available with the internal clock or when you want to pace at uneven intervals Supported Software The following software is available for use with the DT9816 module and is provided on the ECON CD Device Driver The DT9816 Device Driver allows you to use a DT9816 module with any of the supported software packages or utilities Refer to Chapter 2 for more information on loading the device driver e GO application The GO application provides a quick way to measure and control data from a DT9816 module right out of the box The following instrument views make acquiring data and controlling signals easy oscilloscope chart recorder file viewer digital voltmeter digital input digital output frequency counter 15 Chapter 1 16 and rate generator Refer to Chapter 5 for more information on this application DT Measure Foundry An evaluation version of this software is included or provided via a link on the ECON CD DT
58. pansion hubs For more information refer to page 29 You can unplug a module and then plug it in again if you wish without causing damage This process is called hot swapping Your application may take a few seconds to recognize a module once it is plugged back in 27 Chapter 3 Connecting Directly to the USB Ports To connect DT9816 modules directly to the USB ports of 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 2 The operating system automatically detects the USB module and starts the Found New Hardware wizard DT9816 Modules Host Computer H USB Ports q USB Cable x Figure 2 Attaching the Module to the Host Computer 3 Click Next and or Finish in the wizard Once the firmware is loaded the wizard restarts to initiate the firmware to accept commands Click Next and or Finish again If the power supply and module are attached correctly the LED turns green 4 Repeat the steps to attach another DT9816 module to the host computer if desired 28 Setting Up and Installing the Module Connecting to an Expansion Hub Expansion hubs are powered by their own external power supply Theoretically you can connect up to five expansion hubs to a USB port on the host computer However
59. perform an event counting operation without using a gate also called a software gate The counter counts the number of rising edges that occur on the Counter 18 DT9816 Module Figure 8 Connecting Counter Timer Signals for an Event Counting 40 Operation Without Using a Gate Wiring Signals to the Module Connecting Signals for Frequency Measurement One way to measure frequency is to use the same wiring as a standard event counting application that does not use a gate see Figure 8 and then use software if using the SDK call the olDaMeasureFrequency function to determine the duration over which to count the number of pulses connected to the Counter 0 In signal The frequency of the Counter 0 In signal is the number of counts divided by the duration of the olDaMeasureFrequency function If you need more accuracy than the olDaMeasureFrequency function provides you can connect a pulse of a known duration to the Counter 0 Gate signal as shown in Figure 9 In this case the frequency of the Counter 0 In signal is the number of counts divided by the period of the signal connected to the Counter 0 Gate input Ground Signal 19 Source Counter 0 In d i Number of pulses counted during gate period D 18 Ay gt D 16 Counter 0 Gate Known Signal Determines period DT9816 Module Source for count Figure 9 Connecting Counter Ti
60. put 6 15 Ground 35 Digital Output 5 14 Reserved 34 Digital Output 4 13 Reserved 33 Digital Output 3 12 Reserved 32 Digital Output 2 11 Reserved 31 Digital Output 1 10 2 5 V Reference 30 Digital Output 0 9 Analog Ground 29 Ground 8 Reserved 28 Digital Input 7 7 Reserved 27 Digital Input 6 6 Analog Input CH5 26 Digital Input 5 5 Analog Input CH4 25 Digital Input 4 4 Analog Input CH3 24 Digital Input 3 3 Analog Input CH2 23 Digital Input 2 2 Analog Input CH1 22 Digital Input 1 1 Analog Input CHO 21 Digital Input 0 Wiring Signals to the Module Connecting Single Ended Analog Input Signals The DT9816 supports 6 single ended analog input channels Figure 4 shows how to connect single ended voltage input signals channels 0 and 1 in this case to the screw terminals of a DT9816 module Signal Source gd 9 Analog Ground D Vsource 1 Analog In 1 g 2 D1 DT9816 Module Vsource 0 Analog In 0 Figure 4 Connecting Single Ended Inputs 37 Chapter 4 Connecting Digital I O Signals Figure 5 shows how to connect digital input signals lines 0 and 1 in this case to the screw terminals of a DT9816 module 2 D A Ground 22 p Digital Input 1 FX lt 21 Digital Input 0 TTL Inputs DT9816 Module Figure 5 Connecting Digital Inputs Figure 6 shows how to connect digital output signals line 0 in this case
61. r second 49 Chapter 5 50 Using the File Viewer Tab To verify the analog input operation of your DT9816 module using the File Viewer function of the GO application do the following 1 e TP GU gm Connect a known voltage source such as the output of a function generator to analog input channel 0 on the DT9816 module single ended mode Refer to page 37 for an example of how to connect a single ended analog input Under Visible Chamnels on the Chart Recorder tab ensure that only channel 0 is selected Click Start Recording and enter Test for the filename The analog input data from channel 0 is displayed on the screen and logged to the Test xls file After a few seconds click Stop Recording Click on the File Viewer tab and click Open File Click on the filename Test xls Click Open Scroll through the data in the file using the slider at the bottom of the File Viewer screen Verifying the Operation of a Module Using the Digital Input Function To verify the digital input operation of your DT9816 module using the Digital Input function of the GO application do the following 1 Connect a digital input signal to a digital input line on the module Refer to page 38 for an example of how to connect a digital input 2 Read the status of the LEDs If digital input line 0 is high the LED for line 0 turns green on If digital input line 0 is low the LED for line 0 turns gray off The DT98
62. r the clock divider Odd values are rounded down 83 Chapter 7 84 Counter Timers Table 16 DT9816 Counter Timer Options DT9816 Cascading Support OLSSC_SUP_CASCADING AID D A DIN DOUT C T Event Count Mode Support OLSSC_SUP_CTMODE_COUNT Yes Generate Rate Mode Support OLSSC_SUP_CTMODE_RATE One Shot Mode Support OLSSC_SUP_CTMODE_ONESHOT Yes Repetitive One Shot Mode Support OLSSC_SUP_CTMODE_ONESHOT_RPT Up Down Counting Mode Support OLSSC_SUP_CTMODE_UP_DOWN Edge to Edge Measurement Mode Support OLSSC_SUP_CTMODE_MEASURE Continuous Edge to Edge Measurement Mode Support OLSSC_SUP_CTMODE_CONT_MEASURE High to Low Output Pulse Support OLSSC_SUP_PLS_HIGH2LOW Yes Low to High Output Pulse Support OLSSC_SUP_PLS_LOW2HIGH None internal Gate Type Support OLSSC_SUP_GATE_NONE Yes High Level Gate Type Support OLSSC_SUP_GATE_HIGH_LEVEL Yes Low Level Gate Type Support OLSSC_SUP_GATE_LOW_LEVEL High Edge Gate Type Support OLSSC_SUP_GATE_HIGH_EDGE Supported Device Driver Capabilities Table 16 DT9816 Counter Timer Options cont DT9816 A D D A DIN DOUT C T Low Edge Gate Type Support OLSSC_SUP_GATE_LOW_EDGE Level Change Gate Type Support OLSSC_SUP_GATE_LEVEL High Level Gate Type with Input Debounce OLSSC_SUP_GATE_HIGH_LEVEL_DEBOUNCE Low Level Gate Type with Input Debounce S
63. ration your DT9816 module requires the following Windows 2000 or Windows XP Professional Edition operating system For USB Ver 2 0 support make sure that you install Service Pack 2 for Windows XP or Service Pack 4 for Windows 2000 In addition for some systems you may have to disable standby mode If you are not sure whether you are using USB Ver 1 1 or Ver 2 0 run the Open Layers Control Panel applet described on page 27 e One or more USB ports Ver 2 0 or Ver 1 1 USB Ver 2 0 is recommended for optimal performance One CD ROM drive Once you have verified that your system meets the system requirements install the software as described in the next section 23 Chapter 2 24 Installing the Software To install the device driver Data Acq SDK DTx EZ and the GO application do the following 1 10 11 Insert the ECON CD into your CD ROM drive If the software runs automatically the default condition continue with step 4 If the software does not run automatically click Start from the Task Bar and then click Run The Run dialog box appears In the Command Line edit box enter D Setup Exe If your CD ROM is not in drive D enter the letter of the drive where your CD ROM is located The welcome screen appears Click Install Drivers and GO Click Install now The installation wizard appears Click Next The wizard prompts you for the destination location Either cha
64. 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 eee eee eee 9 Intended Audience cect e ene e eens 9 How this Manual is Organized 9 Conventions Used in this Manual 02 00005 1 Related Information 11 Where To Get Help iii 12 Chapter 1 Overview eee eee 13 Key Hardware Features L eee eee eee 14 Simultaneous Analog Inputs 14 Counter Timer Channel 15 Clocks and Triggers 0 0 00 0 La 15 Supported Software cee 15 Getting Started Procedure esses 17 Part 1 Getting Started 19 Chapter 2 Preparing to Use a Module 21 Unpacleing rita 22 Checking the System Requirements 23 Installing the Software e eee eee eee 24 Chapter 3 Setting Up and Installing ihe Module cicseppricile ieri heed 25 Attaching Modules to the Computer 27 Connecting Directly to the USB Ports 28 Connecting to an Expansion Hub 29 Changing the Name of a Module Optional 31 Contents Chapter 4 Wiring
65. rminate N Se the session with olDaTerminate E 96 Programming Flowcharts Pulse Output Operations Initialize the device driver and get the V Go device handle with olDalnitialize E i Get a handle to the C T subsystem with oIDaGetDASS Specify C T subsystem element 0 Yes Using an ea Specify OL_CLK_INTERNAL using olDaSetClockSource Attach an external C T with a maximum Specify Ole CUS EX PEDAL recommended frequency of 6 MHz to the using olDaSetClockSource C i ounter 0 In signal Specify the clock divider using Specify a clock divider between 2 the olDaSetExternalClockDivider default and 65534 Specify the gate type using Specify OL_GATE_HIGH_LEVEL for a olDaSetGateType high level gate or OL_GATE_LOW_LEVEL for a low level gate C Go to the next page 97 Chapter 8 98 Pulse Output Operations cont C Continued from previous page D v Specify the mode using olDaSetCTMode Specify OL_CTMODE_RATE for rate generation mode Y Specify the output pulse type using Must be a high to low pulse The duty olDaSetPulseType cycle is fixed at 50 y Configure the subsystem using olDaConfig y Start the operation using olDaStart y Stop the operation see page 104 y Release each subsystem with olDaReleaseDASS v Release the de
66. round 8 Reserved 28 Digital Input 7 7 Reserved 27 Digital Input 6 6 Analog Input CH5 26 Digital Input 5 5 Analog Input CH4 25 Digital Input 4 4 Analog Input CH3 24 Digital Input 3 3 Analog Input CH2 23 Digital Input 2 2 Analog Input CH1 22 Digital Input 1 1 Analog Input CHO 21 Digital Input 0 120 C Reading from or Writing to the Digital Registers Appendix C 122 If you want to read the value of the digital input lines or write to the digital output lines quickly and do not want to use DT Open Layers to do this you can use the following API functions e olReadReg described on page 123 olWriteReg described on page 125 These functions access the registers of the module directly Reading from or Writing to the Digital Registers olReadReg Syntax Include File Description Parameters Name Description Name Description ECODE olReadReg HDEV hDev ULNG Address PULNG pData oldadefs h oldaapi h Reads data directly from the digital registers of the module hDev A variable of type HDEV that specifies the handle to the device Address An unsigned long variable that specifies the base address of the desired register Values are as follows DIO PORT CONFIG Port configuration register DIO PORT DATA Port data register 123 Appendix C 124 Name Description Notes Return Values OLBADRANGE OLNOTSUPPORTED OLBADDEVHANDLE pData A
67. s 87 Single Value Operations e eee eee eee 89 Continuous A D Operations 2 0 06 66 cece eee 91 Event Counting Operations sese 93 Frequency Measurement Operations 95 Pulse Output Operations 97 Chapter 9 Troubleshooting 107 General Checklist nr 108 Technical Support i e eere eee reete a 111 If Your Module Needs Factory Service 112 Appendix A Specifications 113 Appendix B Screw Terminal Assignments 119 Appendix C Reading from or Writing to the Digital Registers 121 About this Manual The first part of this manual describes how to install and set up your DT9816 module and software and verify that your module is working properly The second part of this manual describes the features of the DT9816 module and device driver and how to program these modules using the DT Open Layers software It also provides troubleshooting information Unless otherwise specified all references to the DT9816 module refer to both the DT9816 and DT9816 A model numbers Intended Audience This document is intended for engineers scientists technicians or others responsible for using and or programming the DT9816 module for analog input digital I O or counter timer operations in the Microsoft Windows 2000 or Windows XP operating system It is assumed that you have some familiarity w
68. s single value digital I O operations only For a single value operation use software to specify the digital I O port the gain is ignored The DT9816 then reads data from or writes data to the digital lines associated with that port determined by the resolution setting Single value operations stop automatically when finished you cannot stop a single value operation 66 Principles of Operation Counter Timer Features This section describes the following features of counter timer C T operations on the DT9816 module e C T channel described below e C T clock sources described on page 68 Gate types described on page 68 Pulse types and duty cycles described on page 69 e C T operation modes described on page 69 C T Channel The DT9816 module provides one 16 bit counter timer The counter accepts a clock input signal and gate input signal and outputs a pulse pulse output signal as shown in Figure 13 Clock Input Signal internal or external __ Counter p Pulse Output Signal Gate Input Signal software or external input Figure 13 Counter Timer Channel 67 Chapter 6 C T Clock Sources The following clock sources are available for the counter timer e Internal clock Through software specify the clock source as internal and specify the frequency at which to pace the counter timer operation The frequency of the internal
69. t the internal sample clock The sample rate which is the rate at which a single entry in the channel gain list is sampled is the same as the conversion rate due to the simultaneous nature of the module To select continuous scan mode use software to specify the data flow as continuous Figure 12 illustrates continuous scan mode using a channel gain list with three entries channel 0 channel 1 and channel 2 In this example analog input data is acquired simultaneously on all channels on each clock pulse of the input sample clock Data is acquired continuously Principles of Operation Chan 0 Chan 0 Chan 0 Chan 0 Chan 0 ChanO Chano Chan 1 Chan 1 Chan 1 Chan 1 Chan 1 Chan1 Chan 1 Chan 2 Chan 2 Chan 2 Chan 2 Chan 2 Chan2 Chan2 Internal Sample Clock Data is acquired continuously Software trigger occurs Figure 12 Continuous Scan Mode Input Triggers The DT9816 supports a software trigger or an external TTL trigger for starting an analog input operation When the computer issues a write to the DT9816 module data acquisition begins Acquisition stops when the specified number of samples has been acquired if the buffer wrap mode is none described on page 64 or when you stop the operation Note that when you stop the operation the module completes the reading of the channel gain list Using software specify the trigger source as a software trigger or an external tr
70. tures of analog input A D operations on the DT9816 module e Input resolution described below e Analog input channels described below 6 e Input ranges and gains described on page 60 e Input sample clock sources described on page 61 e Analog input conversion modes described on page 61 e Input triggers described on page 63 Data format and transfer described on page 63 Error conditions described on page 64 Input Resolution The resolution of the A D subsystem on the DT9816 module is 16 bits This resolution is fixed it cannot be programmed in software Analog Input Channels The DT9816 provides six single ended simultaneous analog input channels You can acquire data from a single analog input channel or from a group of analog input channels on the module Note To maintain simultaneous operation all analog input connections must have the same lead lengths The following subsections describe how to specify the channels 59 Chapter 6 Specifying a Single Analog Input Channel The simplest 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 61 for more information about single value operations You can also specify a single channel using the analog input channel gain list described in the next section Specifying One or More Analog Input Channels You can read data from one or more analog input c
71. upport OLSSC_SUP_GATE_LOW_LEVEL_DEBOUNCE High Edge Gate Type with Input Debounce OLSSC_SUP_GATE_HIGH_EDGE_DEBOUNCE Low Edge Gate Type with Input Debounce Support OLSSC_SUP_GATE_LOW_EDGE_DEBOUNCE Level Change Gate Type with Input Debounce OLSSC_SUP_GATE_LEVEL_DEBOUNCE Fixed Pulse Width Support OLSSC_SUP_FIXED_PULSE_WIDTH Yes Quadrature Decoder OLSSC_SUP_QUADRATURE_DECODER a The pulse width duty cycle if fixed at 50 when rate generation mode is used 85 Chapter 7 Miscellaneous Table 17 DT9816 Miscellaneous Options DT9816 Simultaneous Start List Support OLSSC SUP SIMULTANEOUS START A D D A DIN DOUT C T Pause Operation Support OLSSC SUP PAUSE Asynchronous Operation Support OLSSC SUP POSTMESSAGE Binary Encoding Support OLSSC SUP BINARY Yes Yes Yes Yes Yes Twos Complement Support OLSSC SUP 28COMP Interrupt Support OLSSC SUP INTERRUPT Yes FIFO in Data Path Support OLSSC SUP FIFO Yes Output FIFO Size OLSSC FIFO SIZE IN K Data Processing Capability OLSSC SUP PROCESSOR Yes Yes Software Calibration Support OLSSC SUP SWCAL 86 Programming Flowcharts Single Value Operations ocn ea beer 89 Continuous A D Operations te cee ees 91 Event Counting OperaBons 66s cde coccion cess 93 Frequency Measurement Operations 95
72. ure 13 Chapter 1 14 Key Hardware Features The DT9816 module is part of the ECONseries of economy multifunction mini instruments Table 1 lists the key features of the module Table 1 Key Features of the DT9816 Module Analog Analog Input 1 0 Analog Input Digital Module Inputs Resolution Range Sample Rate yo C T DT9816 6 SE 16 bit 10 V 50 kS s per 8 in 1 or 5V channel 8 out DT9816 A 6 SE 16 bit 10 V 150 kS s per 8in 1 or 5V channel 8 out a Actual maximum is 153 846 kHz If you use the olDaSetClockFrequency function to set 150 kHz the olDaGetClockFrequency function will not return the true value 153 846 kHz until after you invoke the olDaConfig function The DT9816 is a low power device less than 100 mA draw Simultaneous Analog Inputs The DT9816 module features six independent 16 bit successive approximation A D converters with track and hold circuitry Each converter uses a common clock and trigger for simultaneous sampling of all six analog input signals at up to 50 kHz per channel DT9816 or up to 150 kHz per channel DT9816 A All channels in the channel gain list are read simultaneously on a single pulse of the internal clock The DT9816 module provides gains of 1 and 2 for effective full scale input signal ranges of 10 V and 5 V Overview Counter Timer Channel The DT9816 module supports one 16 bit counter timer channel This c
73. vice driver and terminate the session with olDaTerminate Programming Flowcharts Set Up Channel List and Channel Parameters S olDaSetChannelListSize 2 Use to specify the size of the analog input channel gain list the default is 1 v Use to set up the analog input channel gain list olDaSetChannelListEntry Channels 0 to 5 are available you can specify up to 6 channels in the channel gain list v olDaSetGainListEntry Specify a gain of 1 Set Clocks and Triggers olDaSetClockSource v olDaSetClockFrequency v olDaSetTrigger Specify OL CLK INTERNAL the default to select the internal clock Use to specify the frequency of the internal clock Values range from 60 Hz to 6 MHz The driver sets the actual frequency as closely as possible to the number specified Use to specify the trigger source Specify OL TRG SOFT the default to select a software trigger 99 Chapter 8 Set Up A D Buffering Using main window to Yes handle Use to specify the window in olDaSetWndHandle which to post messages messages No olDaSetWrapMode Nt v olDmAllocBuffer v olDaPutBuffer Allocate more buffers 100 Use to specify the buffer wrap mode OL WRP NONE for guaranteed gap free operation OL_WRP_ MULTIPLE for not guaranteed gap free operation
74. you can select the module to use Notes If no module is connected a message box is displayed If you want to continue with the GO application plug a DT9816 module into any USB port of your PC and then click Rescan Otherwise click Quit to exit from the GO application If you have multiple DT9816 modules you can run multiple instances of the GO application if you wish Each instance of the application detects the available not already in use modules for your convenience Press F1 at any time to get help on any of the functions of the GO application Verifying the Operation of a Module Using the Oscilloscope Function The verify the analog input operation of your DT9816 module using the Oscilloscope function of the GO application do the following 1 Connect a known voltage source such as the output of a function generator to analog input channel 0 on the DT9816 module single ended mode Refer to page 37 for an example of how to connect a single ended analog input 2 Under Visible Channels on the Oscilloscope tab ensure that only channel 0 is selected The analog input data from channel 0 is continuously displayed 3 Zoom in on your data by using your left mouse button to create a zoom rectangle around the region that you are interested in 4 When you are finished snap back to the standard voltage range of the module by clicking the Unzoom button 47 Chapter 5 48 Using the Chart Recorder

DT9816 User's Manual - Cole

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