DT9818 Datasheet
Contents
1. niiiiiijii stihi g CL Fl ddd tt oe al ae a serine ee EE m um tea ato oe Chdi i a ua 1th n rj E gorai PULLS ITT j Beitr s _ p C ma E CAG e 6c ee ga mee 7 am i A i tea eT pd pe we IS ove cad K Ly I dpsagieas crs E TEETTIT Huidig Ca bt Ei LLL ei im i a i pemimiineeppintaiiitern peeeddd ENE retin aaa N e i E otii Hi r tailed E EIN a Fi 7 a en TELLER ELERELE hy p 5 GC t a EEE ECE CCOLe oe a r Ai An ET TLEPenTTTTTEEe titer a as iA uu J ali Figure 6 DT9818 board level OEM version can be embedded into custom applications US Canapa 800 525 8528 EuropPe AsiA 49 0 7142 95310 High Throughput Fast settling instrumentation amplifier maintains high speed while switching channels Precision Measurements True 16 bit resolution at 150kHz throughput for measuring dynamic signals Fully Protected 500V galvanic isolation protects your computer and maintains signal integrity No Limits Full simultaneous operation of all subsystems Designed for Low Noise Multi layer PCB provides optimal grounding and Shielding to maintain signal integrity Flexible Acquisition Modes Using The Input Channel Gain List The DT98182. A D and D A Up to 32 SE or 16 DI analog input channels Two deglitched analog outputs for smooth waveform generation less than 1 0 nV sec glitch energy 8 digital input output lines clocked synchronously at the analog input output rate AIN O Upto A 32SE e Analog Input Prog 16 Bit A D 16DI MUX Gain Converter AIN n gt 16 bit Figure 2 The 500V galvanic isolation allows all analog input analog output digital I O and counter timer functions to operate in high noise environments Signal accuracy is maintained despite the presence of large noise spikes on small signal paths This is especially critical for embedded applications DAC ye WWW DATATRANSLATION COM US CANADA 800 525 8528 EuroPe AsiA 49 0 7142 95310 Two 32 bit counter timer channels acquired read synchronously at the analog input rate Independent clock sources internal and external for pacing analog inputs and analog outputs Independent trigger sources internal and external for starting analog input and analog output operations Flexible acquisition modes single value continuous and triggered scan for input operations and flexible output modes single value continuous and waveform generation for output operations High speed USB data at rates up to 480 Mbps Many software choices available for application development from ready to measure programs like Measurement Applets and quickDAQ to full graphical pro
3. module can acquire data from one or more analog input channels using an input channel gain list A 1024 location channel gain list allows great flexibility in configuring channels sample rates and gains For example it permits sampling non sequential analog input channels analog input channels with different gains and digital inputs and counter timer channels with the analog input channels at the A D sample rate All input channels can be entered in the input channel gain list CGL as shown in Table 1 For each entry in the input channel gain list specify the channel to sample and the gain to apply to that channel Channels in an input channel gain list are sampled in order from the first entry to the last entry in the list Channel numbering is zero based that is the first entry in the input channel gain list is entry 0 the second entry is entry 1 and so on The DT9818 module provides two ways to cycle through the channel gain list Continuous scan mode Choose this mode to accurately control the period between conversions of individual channels in the channel gain list Triggered scan mode Choose this mode to accurately control both the period between conversions of individual channels in the channel gain list and the period between each scan This mode emulates a sample and hold function and is useful when synchronizing or controlling external equipment or when acquiring a buffer of data on each trigger Using
4. to 150 kSamples s Using software specify the values to output to each channel using a buffer of up to 16K bytes Figure 8 shows the timing diagrams for continuous output and waveform operations The channels in the output CGL are updated simultaneously with the values from specific locations in the output buffer For example the values from buffer locations 0 3 6 and 9 are written to DACO the values from buffer locations 1 4 7 Continuous and 10 are written to DAC1 and the values from buffer locations 2 5 8 and 11 are written to the digital output port Trigger Sample Clock DAC 0 l r r DAC 1 Digital Out M M u o a u l l o a a _ Waveform Trigger Clock DAC 0 l l l DAC 1 Digital Out Q Output Buffer Locations i or LS LI LF ELF LI LI LI L_ l 4 Output Buffer Locations Figure 8 Timing Diagram for Continuous Output and Waveform Generation Operations WWW DATATRANSLATION COM US CANADA 800 525 8528 EuropPe AsiA 49 0 7142 95310 DT9818 32 STP Digital I O Connections STP Connection Box g Analog Input Counter Timer Connections External Clock and Connections Trigger Connections Figure 9 The DT9818 is also available in a BNC boxed version that Figure 10 The DT9818 32 STP is an STP boxed version allowing houses the DT9818 O
5. to be triggered and clocked synchronously with or independent of the analog input subsystem Each subsystem supports an internal clock and external clock input as well as the following trigger types software command and external digital input trigger WWW DATATRANSLATION COM US CANADA 800 525 8528 EuropPe AsiA 49 0 7142 95310 USB 2 0 Compatibility The DT9818 module is fully compatible with USB 2 0 and USB 1 1 USB 2 0 extends the speed of connection to up to 480 Mbps For optimal performance it is recommended that you use the DT9818 module with a USB 2 0 port The DT9818 Series can be used with a USB 1 1 port but at USB 1 1 performance The DT9818 is a complete high speed 16 bit data acquisition system that runs on USB power only No special power requirements 500 V Galvanic Isolation Protects Your Data Computers are susceptible to ground spikes through any external port These spikes can cause system crashes and may even cause permanent damage to the computer The DT9818 module features 500 Volts of galvanic isolation to protect the computer from ground spikes and to ensure a reliable stream of data Cross Series Compatibility Saves Programming Time Protects Your Investment Virtually all Data Translation data acquisition modules including the DT9818 are compatible with the DT Open Layers software standard This means any application developed with one of Data Translation s software products can easily
6. 3 accessory panel which Figure 5 The EP355 screw terminal panel plugs into the J2 or J3 plugs into connector J2 and an EP356 accessory panel which plugs connector of a DT9818 module into J3 WWW DATATRANSLATION COM US CANADA 800 525 8528 Europe Asia 49 0 7142 9531 0 2 Uncompromised High Integrity Performance Clean Signal Connection Up to 32 high speed analog input channels Ultra Digital I O Full digital I O flexibility for pattern generation and synchronizing with external events Full Featured Counter Timers Two 32 bit counter timers ideal for automotive testing applications Pure Signal Generation Two waveform deglitched DACs External Control Flexible clocks and triggers WWW DATATRANSLATION COM B d cuales aiti oE JEE GI S CONT E a jf Fil Ts jel lat z Se e 0l e S PDT 1 fea a izails ri ia Pr a F T o s yil FE EE A Lai I P TT WLLL p a i E aa Em Fr 5E E 5 GTE r 5 EEr D 0 a a m T a ITITI E s a l o a S bo J ST y p 380 ri ij ail d is Ga t sTSTTET TE mee LULL TAVANININ si Cee AO TPT EET E SADAADARGARARADD M meen PRR ALD ES a ita eh ANU RU OPN of orn elie E iiini SEN Ey Las i _ gerenda 2E Er mitt l ATTA
7. DT9818 lsolated Embedded USB Data Acquisition Module The DT9818 combines the functionality of multiple boards in a single USB 2 0 module to provide simultaneous analog input analog output digital I O and counter timer operations The DT9818 module features up to 32 single ended or 16 differential analog input channels depending on the model selected All analog input signals are multiplexed to a single analog to digital converter The DT9818 supports sampling rates of up to 150 kSamples s with 16 bit resolution Four programmable gains 1 2 4 and 8 are provided to support input signal ranges of 10 V 5 V 2 5 V and 1 25 V for DT9818 Type Isolated Embedded Bus USB Figure 1 The DT9818 is a high performance isolated data acquisition module that can be readily embedded in industrial or laboratory applications It allows synchronous or asynchronous operation for all the analog digital and counter timer functions while running off USB power each individual channel Key Features Board level OEM version embed in custom applications 500 V galvanic isolation prevents ground loops maximizes analog signal integrity and protects the computer Runs on USB power ideal for portable applications no external power supply needed Simultaneous operation of analog input analog output digital I O and counter timer subsystems no restrictions m 16 bit resolution 150 kHz throughput on both the
8. EM board This model is useful for OEM access to all I O connections through screw terminals prototypes and end user applications Models are DT9818 16SE BNC for a single ended analog input configuration and the DT9818 8DI BNC for differential inputs High Speed High Resolution Analog Outputs Continuous digital I O takes full advantage of the capabilities of the DT9818 module Simply specify a clock source scan mode trigger source buffer and buffer wrap mode for the operation Digital input For digital input operations enter the digital input port all 8 digital input lines as channel 16 in the input channel gain list The input sample clock internal or external paces the reading of the digital input port as well as the acquisition of the analog input and counter timer channels Digital output For digital output operations enter the digital output port all 8 digital output lines as channel 2 in the output channel gain list The output clock internal or external paces the update The DT9818 module provides two streaming analog output channels Each analog output channel has its own digital to analog converter and provides an output signal range of 10 V A maximum update rate of 150 kSamples second with 16 bit resolution is standard Ultra smooth waveforms can be produced with less than 1 0 nV sec glitch energy from the D As For gap free simultaneous stimulus and response the analog output channels can be upda
9. be upgraded to a new Data Translation module Little or no reprogramming is needed For example upgrading a DT3016 board on a PCI bus to a DT9818 module on the USB bus is simple just load and configure the new driver Software Options There are many software choices available for application development from ready to measure applications to programming environments The following software is available for use with the DT9818 module and is provided on the Data Acquisition Omni CD DT9818 Device Driver The device driver allows the use of a DT9818 module with any of the supported software packages or utilities Measure Foundry An evaluation version of this software is included on the Data Acquisition Omni CD Measure Foundry is a drag and drop test and measurement application builder designed to give top performance with ease of use development Measurement Applets Included in the Measure Foundry evaluation version These small applications developed with Measure Foundry can be modified or combined to provide a specific solution Order the full development version of Measure Foundry to develop applications using real hardware m quickDAQ application An evaluation version of this NET application is included on the Data Acquisition Omni CD quickDAQ acquires analog data from all devices supported by DT Open Layers for NET software at high speed plots it during acquisition analyzes it and or saves it to
10. disk for later analysis Quick DataAcg application The Quick DataAcq application provides a quick way to get up and running using a DT9818 module Using this application verify key features of the module display data on the screen and save data to disk DT Open Layers for NET Class Library Use this class library if you want to use Visual C or Visual Basic for NET to develop application software for a DT9818 module using Visual Studio 2003 2005 2008 the class library complies with the DT Open Layers standard WWW DATATRANSLATION COM US CANADA 800 525 8528 EuropPe AsiA 49 0 7142 95310 Whee z _ Sie iw Da fun Pame view Setinga ida D He tar Geen Gel doe E Omandi O felon ry Data Aiimiier Appii a ia Et file nmuindion Comfigumbon Meip Foumip EE PPAT PAAR Gami Erdbector Wess ea ol Fann nena Chern inig Apokea Cantal id za a A gt Applicaton ikes A a o E Charnes 8 A inaki Azaog Dapa E hima e a Firrngke grthe TA tas Arginin TEE or EXE E iip fen 2 ia BE Dipli Carpani 7 Lad x Gispen Chir Chane Cound a E Input T QUIT EXE init 4 a Gesik 2 vill 7 ar r jos EXE OG OFC Pieewes Contd Sues HE ret Fame kei E Phoit A bhann wriat Dep p Faure Hemal Ducal 4 Menard Diir i E Dhamelt a a alte E irimi a k gF or gt Hale Roa lere Taari Trgi Vakre here Garii Orere Sprchrorebe aT Select Al deed ona l Sgi j bisi Nani Sh
11. er Figure 7 Timing Diagram for Continuous Input and Triggered Scan Operations WWW DATATRANSLATION COM US CANADA 800 525 8528 EuropPe AsiA 49 0 7142 95310 Flexible Output Modes Using The Output Channel Gain List The DT9818 module provides a great deal of flexibility in the output of analog and digital signals For example output a single value from a single analog output channel or multiple values from multiple analog output channels An output channel list gives the flexibility of updating only the analog output channels desired or updating the digital output lines with specified analog output channels at the D A clock rate Analog output channels can be updated at up to 150 kSamples s All output channels can be entered in the output channel gain list CGL as shown in Table 2 The output channel gain list is fixed at 3 entries Table 2 Output Channel Gain List Example eg pace feoeo a ofe E a To update the digital output port specify channel 2 DAC 1 Update DAC 1 Digital Updated the digital output Output Port port The DT9818 module features the following output modes Continuous output mode Choose this mode to accurately control the period between conversions of individual output channels in the output channel list Waveform mode Choose this mode to output waveforms repetitively from an output FIFO on the module Using waveform mode multiple channels can be updated at up
12. er timer and clock trigger signals from the EP353 or EP356 screw terminal panel m EP333 2 meter shielded cable with two 37 pin connectors that connect an EP356 accessory panel to an STP37 screw terminal panel EP360 2 meter shielded cable with two 37 pin connectors that connect an EP353 accessory panel to an STP37 screw terminal panel For more information about the DT9818 please visit http www datatranslation com go dt9818 For specifications drawings and pin assignments please visit http www datatranslation com go dt9818 techinfo Ordering Summary Hardware DT9818 0EM DT9818 8DI BNC DT9818 16SE BNC DT9818 32 0EM DT9818 32 STP Software Measure Foundry SP1300 CD quickDAQ SP8051 CD L V Link SP0811 CD Accessories EP333 2 meter shielded cable for the EP356 and STP37 EP353 Accessory panel with one 37 pin connector and one 27 pin connector EP355 Screw terminal panel EP356 Accessory panel with two 37 pin D sub connectors EP360 2 meter shielded cable for the EP353 and STP37 STP37 Screw terminal panel All Data Translation hardware products are covered by a 1 year warranty For pricing information see the current price list visit our website or contact your local reseller Copyright 2009 Data Translation Inc All rights reserved All trademarks are the property of their respective holders Prices availability and specifications are subject
13. gramming with Measure Foundry Digital Control Digital 1 0 8 8 gt Counter Timer 2 gt FFO USB lt gt Sync or Async E g S D gt oO B DATA TRANSLATION Up to 32 Programmable Analog Input Gain 1 2 4 8 be Flash 128KB Channels input 16 Bit i ye MUX ADC PRE Bus Channel Gain Input Interface 8 Sue Select Select Clack 8 Digital Inputs Digitalln 0 8 Bit Digital Input Select Contral In Address Decode 2 CounternTimers UserClock 1 0 jn 2 x 32 bit UserGate 1 0 opima p Counter Time UserOut 1 0 _ 2 Analog Output co Channels 5 Reference AnalogOuto Clock amp Output Select OutputClock gt Control Input 5 Channel Gain lt AnaloagQutt 16 Bit List OutputClock DAC Output FIFO CGL Controls 8 Digital Outputs DigitalOut 7 0 o Bit Digital Out ExtADCTrigger 2 Output Clock ADC Trigger ADC Trigger ExtADC Clack i ne tl Triggers nputGlock InputClock ExtDAC Trigger amp Registers Clocks OutputClock OutputClock amp Se QutputCtriClock OutputCtriCleck Controls Reference Clock ReferenceCloc Figure 3 The in depth DT9818 block diagram shows all functions and controls For embedded applications helpful connection panels are available Figure 4 shows DIN type mass terminations while Figure 5 shows screw terminal terminations Figure 4 This example shows an EP35
14. igital I O lines For a single value operation a clock or trigger source cannot be specified Single value operations stop automatically when finished WWW DATATRANSLATION COM US CANADA 800 525 8528 Europe Asia 49 0 7142 9531 0 2 ENOB The Accuracy Figure of Merit ENOB Effective Number of Bits using a DT9818 02 X About Hook Up Reset E E Gain DATA TRANSLATION TRANSLATION aa pgg 1024 Point FFT using a DT9818 02 _20dB 10V signal 40dB nange B SFDR Spurious Free Dynamic 60dB NOB Effective Number of Bits Noise Floor First Yalue 05 47363 Mose Frequency File In 1025 Hertz File Out Figure 11 The ENOB program has a 1kHz sine wave on channel 0 with a signal level 0 06db below full scale and channel 1 is tied to ground or zero volts Full scale is 10V The program is scanning both channels at a 150kHz rate The actual sampling rate of channel 0 would then be 75kHz for a Nyquist Frequency of 37 5kHz as shown in the graph for channel 0 An FFT is computed on channel zero and displayed The signal to noise plus distortion is 87 75dB for an Effective Number of Bits of 14 3 The primary component on the left side of the chart is the DC component of the signal View Cho Chi Auto Flexible Clocks and Triggers For maximum flexibility the DT9818 module provides independent clocks and triggers for the A D and D A subsystems This allows the analog output subsystem
15. op Aeon Tima mi I Ba T 1 Bsa i ju 7 HZ BEE Project Co_ _ADwta Recorder Applet Data Record Version 0 1 04 Fol fom Workspace lt nones Figure 12 The data recorder applet is developed with Measure Foundry and allows you to acquire data plot it and save it to disk ity image DG Log ree Vie mrt Figure 13 quickDAQ acquires analog data from all devices supported by DT Open Layers for NET software at high speed plots it during acquisition analyzes it and or saves it to disk for later analysis DataAcq SDK Use the Data Acq SDK to use Visual Studio 6 0 and Microsoft C or C to develop application software for a DT9818 module using Windows the DataAcq SDK complies with the DT Open Layers standard m DTx EZ DTx EZ provides ActiveX controls which allows access to the capabilities of the DT9818 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 toolbox from The MathWorks and Data Translation s DT Open Layers architecture m LV Link An evaluation version of this software is included on the Data Acquisition Omni CD Use LV Link to use the LabVIEW graphical programming language to access the capabilities of the DT9818 module User Manual The DT9818 module includes a user s manual that provides ge
16. ted as the analog input data is acquired In addition you can update the digital output lines with the analog output channels at the analog output rate High Speed Digital I O Lines of the digital output port as well as the update of DT9818 module features one digital input port consisting of the analog output channels 8 digital input lines and one digital output port consisting of 8 digital output lines The resolution is fixed at 8 bits Multifunction Counter Timers The DT9818 module features two 32 bit user counter timers If desired read the value of the counter timer channels with the analog input channels and digital input lines at the A D clock rate The following counter timer functions are supported event counting up down counting frequency measurement edge to edge measurement continuous edge to edge measurement for determining the frequency and period width of a signal rate generation one shot and repetitive one shot operations To read the period of a signal as part of the analog input data stream use continuous edge to edge measurement mode Programmable gates clocks and output signals are also supported The following digital I O operation modes are available a Single value operations are the simplest to use but offer the least flexibility and efficiency Use software to specify the digital I O port and a gain of 1 the gain is ignored Data is then read from or written to all the d
17. this mode allows acquisitions of up to 262 144 samples per trigger 256 times per trigger x 1024 location channel gain list Continuous Table 1 Input Gain Channel List CGL Example Channel fe AIN4 Read analog input channel 4 using a gain of 1 input range 10V 2 AIN5 Read analog input channel 5 using a gain of 2 input range 5V 2 AIN4 Read analog input channel 4 using a gain of 1 input range 10V AIN6 Read analog input channel 6 using a gain of 4 input range 2 5V eee C TO Read the lower 16 bit word of counter timer 0 Read the upper 16 bit word of C TO counter timer 0 7 C T1 Read the lower 16 bit word of counter timer 1 20 C T1 Read the upper 16 bit word of counter timer 1 Read analog input channel 0 using a gain of 8 input range 1 25V a To read the digital input port specify channel 16 b To read C TO specify channel 17 to read the lower 16 bit word and channel 18 to read the upper 16 bit word of the 32 bit counter c To read C T1 specify channel 19 to read the lower 16 bit word and channel 20 to read the upper 16 bit word of the 32 bit counter On each pulse of the sample clock the corresponding Trigger input CGL entry is read Sample Clock CGL Entry e E oS 1 oe tO eT Triggered Scan Trigger cae T LI Ly L Clock CPO ee ee ere ere CGL Entry TEF ee ee Oe In triggered scan mode the period between scans is determined by the trigg
18. to change without notice Rev 1 2A WWW DATATRANSLATION COM US CANADA 800 525 8528 EuropPe AsiA 49 0 7142 95310 DATA TRANSLATION
19. tting started and reference information about using the DT9818 The manual is provided in electronic PDF format on the Data Acquisition Omni CD provided with the module Technical Support Application engineers are available by phone and email during normal business hours to discuss your application requirements Extensive product information including drivers example code pinouts a searchable Knowledge Base and much more is available 24 hours a day on our web site at www datatranslation com Accessories for OEM Configurations For applications where the DT9818 module is embedded in other equipment the following optional accessories are available m EP353 This accessory panel plugs into connector J2 of aDT9818 module and provides one 37 pin D sub connector and one 26 pin connector for attaching analog input signals see Figure 4 m EP355 This screw terminal panel plugs into connector J2 or J3 of a DT9818 module and provides 14 position screw terminal blocks for attaching analog I O and digital I O signals See Figure 5 m EP356 This accessory panel plugs into connector J3 of aDT9818 module and provides two 37 pin D sub connectors You can use one of these connectors to attach analog output counter timer trigger and clock signals and the other connector to attach digital I O signals See Figure 4 on page 2 m STP37 This screw terminal panel allows you to connect analog input digital I O analog output count
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