National Instruments USB-6008/6009 Computer Drive User Manual
Contents
1. 5 Q L e e eona P0 lt 0 7 gt gt NZ 2 5V CAL_ gt 8 Channel NZ 12 14b ADC P Al lt 0 7 gt x Q 2 a E 12b DAC AO 0 amp Q D s h oO 12b DAC AO 1 IT lt Figure 3 Device Block Diagram National Instruments Corporation 5 USB 6008 6009 User Guide and Specifications Setting Up Hardware Complete the following steps to set up the hardware 1 Install combicon screw terminal blocks by inserting them into the combicon jacks nye Note The USB 6008 6009 kit ships with signal labels You can apply the signal labels to the screw terminal blocks for easy signal identification 2 Refer to Table 3 and Figure 4 for label orientation and affix the provided signal labels to the screw terminal blocks Until the signal labels are applied you can insert the screw terminal blocks into either of the combicon jacks Refer to Figure 4 for more information about signal label orientation 1 Overlay Label with Pin Orientation Guides 3 Signal Labels 2 Combicon Jack 4 USB Cable Figure 4 Signal Label Application Diagram 3 Note Once you label the screw terminal blocks you must only insert them into the matching combicon jack as indicated by the overlay label on the USB 6008 6009 device 3 Connect the wiring to the appropriate screw terminals USB 6008 6009 User Guide and Specifications 6 ni com2. ossessione 300 uA typical 500 uA max Physical Characteristics If you need to clean the module wipe it with a dry towel Dimensions Without connectors cceseeeeees 6 35 cm x 8 51 cm x 2 31 cm 2 50 in x 3 35 in x 0 91 in With CONNCCUOTS c cceeeseceeeseeeeeeees 8 18 cm x 8 51 cm x 2 31 cm 3 22 in x 3 35 in x 0 91 in T O COMNECHOTS 0 eee eseeeeeeteeeeeeeeeee USB series B receptacle 2 16 position terminal block plug headers Weight With COMNCCLOTS c cceeseeeeseeeeetees 84 g 3 oz Without Connectors ceseeeeeees 54 g 21 oz Screw terminal Wiring 00 eee 16 to 28 AWG Torque for screw terminals 0 22 to 0 25 N m 2 0 to 2 2 Ib in Safety Standards The USB 6008 6009 is designed to meet the requirements of the following standards of safety for electrical equipment for measurement control and laboratory use e ITEC 61010 1 EN 61010 1 e UL61010 1 e CAN CSA C22 2 No 61010 1 B Note For UL and other safety certifications refer to the product label or visit ni com certification search by model number or product line and click the appropriate link in the Certification column USB 6008 6009 User Guide and Specifications 22 ni com Voltages Connect only voltages that are within these limits Channel to GND cccccccccceeceesseeeeeees 30 V max Measurement Category I Measurement Category I is for measurements performed on circuits not directly connected to t
3. 1 0 Connector The USB 6008 6009 ships with one detachable screw terminal block for analog signals and one detachable screw terminal block for digital signals These terminal blocks provide 16 connections that use 16 AWG to 28 AWG wire Table 3 lists the analog terminal assignments and Table 4 lists the digital terminal assignments Table 3 Analog Terminal Assignments Signal Signal Module Terminal Single Ended Mode Differential Mode 1 GND GND a 2 AIO AI 0 r 3 AI4 AI 0 F 4 GND GND pa 5 AI 1 AI 1 N es 6 AI5 AI 1 z 7 GND GND ol add 8 AI 2 AI 2 co 9 Al 6 AI 2 o 10 GND GND a 11 AI3 AI 3 N D 12 AI7 AI 3 B Fr 13 GND GND 14 AO 0 AO 0 15 AO 1 AO 1 16 GND GND National Instruments Corporation 7 USB 6008 6009 User Guide and Specifications Table 4 Digital Terminal Assignments Module Terminal Signal 17 P0 0 18 P0 1 19 P0 2 i 20 P0 3 21 P0 4 2 0O 2 W00 22 P0 5 sO pe 23 P06 N gt p 24 P0 7 lt 1 0 x O 25 P1 0 8 G4 s0 26 P1 1 a O e 2 27 P1 2 a cS 28 P1 3 m 5 Dm 29 PFI O n 30 2 5 V a7 31 5 V 32 GND USB 6008 6009 User Guide and Spe
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5. Signal Digital 1 0 When you use a DAC to generate a waveform you may observe glitches in the output signal These glitches are normal when a DAQ switches from one voltage to another it produces glitches due to released charges The largest glitches occur when the most significant bit of the DAC code changes You can build a low pass deglitching filter to remove some of these glitches depending on the frequency and nature of the output signal Refer to ni com support for more information about minimizing glitches The USB 6008 6009 has 12 digital lines P0 lt 0 7 gt and P1 lt 0 3 gt which comprise the DIO port GND is the ground reference signal for the DIO port You can individually program all lines as inputs or outputs Digital 1 0 Circuitry Figure 12 shows P0 lt 0 7 gt connected to example signals configured as digital inputs and digital outputs You can configure P1 lt 0 3 gt similarly USB 6008 6009 User Guide and Specifications 14 ni com Ona 5 V A LED a ol P0 0 aan wn o P0 1 K Hw Fo jx P0 2 On me o P0 3 T gt o gt P0 4 5V TTL Signal P0 5 o P0 6 WV P PO 7 ot I Switch Y O yo NG 1 0 Connector P0 0 configured as an open collector digital output driving a LED P0 2 configured as a active drive digital output driving a LED P0 4 configured as a digital input receiving a TTL signa
6. 6009 connect the positive voltage signal to the desired AI terminal and the ground signal to a GND terminal USB 6008 6009 User Guide and Specifications 12 ni com Al Voltage USB 6008 6009 Source GND Figure 9 Connecting a Reference Single Ended Voltage Signal Digital Trigger When an AI task is defined you can configure PFI 0 as a digital trigger input When the digital trigger is enabled the AI task waits for a rising edge on PFI 0 before starting the acquisition To use ai Start Trigger with a digital source specify PFI 0 as the source and select rising edge Analog Output The USB 6008 6009 has two independent AO channels that can generate outputs from 0 5 V All updates of AO lines are software timed Analog Output Circuitry Figure 10 illustrates the analog output circuitry for the USB 6008 6009 5 V REF REF 12 Bit Output Buffer AO Figure 10 Analog Output Circuitry DACs Digital to analog converts DACs convert digital codes to analog voltages National Instruments Corporation 13 USB 6008 6009 User Guide and Specifications Connecting Analog Output Loads To connect loads to the USB 6008 6009 connect the positive lead of the load to the AO terminal and connect the ground of the load to a GND terminal USB 6008 6009 Load Figure 11 Connecting a Load Minimizing Glitches on the Output
7. 9 differential 0 0 37 mVrms USB 6009 single ended 0 73 mVrms Absolute accuracy at full scale single ended Typical at 25 C Maximum over Temperature Range mV mV 10 14 7 138 Absolute accuracy at full scale differential Typical at 25 C Maximum over Temperature Range mV mV 20 14 7 138 10 7 73 84 8 5 4 28 58 4 4 3 59 53 1 2 5 2 56 45 1 2 2 21 42 5 1 25 1 70 38 9 1 1 53 37 5 1 Input voltages may not exceed the working voltage range Analog Output Converter ty pessera aa Successive approximation Analog outputs 00 0 eeeeeeeseeeeeceneeeneeeeaees 2 Output resolution eee eee renee 12 bits Maximum update rate oo eee 150 Hz software timed QOUUPUL ran eiii rectors 0 to 5 V Output impedance eects 50 National Instruments Corporation 19 USB 6008 6009 User Guide and Specifications Output current drive Power on state Slew rate Short circuit current Absolute accuracy no load Digital 1 0 Digital I O Output driver type USB 6008 USB 6009 Compatibility Absolute maximum voltage range Pull Up TeSiStOr cece eeeeeeeeeeteeeeeeeeeees Power on state USB 6008 6009 User Guide and Specifications 20 7 mV typical 36 4 mV maximum at full scale 8 lines 4 lines Each channel individually programmable as input or output Open collector open drain Each channel individually programmable as active drive push pull or open collector op
8. cifications ni com Signal Descriptions Table 5 describes the signals available on the I O connectors Table 5 Signal Descriptions Signal Name Reference Direction Description GND Ground The reference point for the single ended AI measurements bias current return point for differential mode measurements AO voltages digital signals at the I O connector 5 VDC supply and the 2 5 VDC reference AI lt 0 7 gt Varies Input Analog Input Channels 0 to 7 For single ended measurements each signal is an analog input voltage channel For differential measurements AI 0 and AI 4 are the positive and negative inputs of differential analog input channel 0 The following signal pairs also form differential input channels lt AI 1 AI 5 gt lt AI 2 AI 6 gt and lt AI 3 AI 7 gt AO 0 GND Output Analog Channel 0 Output Supplies the voltage output of AO channel 0 AO 1 GND Output Analog Channel 1 Output Supplies the voltage output of AO channel 1 P1 lt 0 3 gt P0 lt 0 7 gt GND Input or Output Digital I O Signals You can individually configure each signal as an input or output 42 5 V GND Output 2 5 V External Reference Provides a reference for wrap back testing 5 V GND Output 5 V Power Source Provides 5 V power up to 200 mA PFI 0 GND Input PFI 0 This pin is configurable a
9. data is lost Analog Input Modes You can configure the AI channels on the USB 6008 6009 to take single ended or differential measurements Refer to Table 5 for more information about I O connections for single ended or differential measurements Connecting Differential Voltage Signals For differential signals connect the positive lead of the signal to the AI terminal and the negative lead to the AI terminal Al ee a Voltage USB 6008 6009 Source _ AR tt Figure 6 Connecting a Differential Voltage Signal The differential input mode can measure 20 V signals in the 20 V range However the maximum voltage on any one pin is 10 V with respect to GND For example if AI 1 is 10 V and AI 5 is 10 V then the measurement returned from the device is 20 V National Instruments Corporation 11 USB 6008 6009 User Guide and Specifications Alt So a o a AS gpa Result AV Amplitude V Figure 7 Example of a Differential 20 V Measurement Connecting a signal greater than 10 V on either pin results in a clipped output 20 15 10 5 Ar it 0 5 6 6 6 Sa 5 6 _ Ee 6 2 Al5 ip g Result YV jo4 154 20 Figure 8 Exceeding 10 V on Al Returns Clipped Output Connecting Reference Single Ended Voltage Signals To connect reference single ended voltage signals RSE to the USB 6008
10. delines UN Caution Operate the hardware only as described in these operating instructions The following section contains important safety information that you must follow when installing and using the USB 6008 6009 Do not operate the USB 6008 6009 in a manner not specified in this document Misuse of the device can result in a hazard You can compromise the safety protection built into the device if the device is damaged in any way If the device is damaged contact National Instruments for repair Do not substitute parts or modify the device except as described in this document Use the device only with the chassis modules accessories and cables specified in the installation instructions You must have all covers and filler panels installed during operation of the device USB 6008 6009 User Guide and Specifications 2 ni com Do not operate the device in an explosive atmosphere or where there may be flammable gases or fumes If you must operate the device in such an environment it must be in a suitably rated enclosure If you need to clean the device use a dry cloth Make sure that the device is completely dry and free from contaminants before returning it to service Operate the device only at or below Pollution Degree 2 Pollution is foreign matter in a solid liquid or gaseous state that can reduce dielectric strength or surface resistivity The following is a description of pollution degrees e Pollution Degree 1 means no p
11. e and Specifications Specifications The following specifications are typical at 25 C unless otherwise noted Analog Input Converter type ananin aa Analog inputs eeeeeeeeeeseeenreeseeeeeeeeee Input resolution USB 6008 toonen USB 6009 sisirin iini ers Max sampling rate Single channel USB 6008 oe eee eeeeeeee USB 6009 oes eeeevesneeeceee Multiple channels aggregate USB 6008 oe ee eeeeeeee USB 6009 rikit eeii ALFIO eteina Timing resolution sesesseeeeeeeeeeeeeeeseeeese Timing accuracy sesesseeeeeeeeeeeeeeeeeereereeee Input range Single ended 0 eee eeeeeeeeee Differential ninen Working voltage eceeceeseeseeceneeeneeees Input impedance 0 0 0 cee eeeeeeseeseeeeneeees Overvoltage protection 0 0 cee Might be system dependent USB 6008 6009 User Guide and Specifications 18 Successive approximation 8 single ended 4 differential software selectable 12 bits differential 11 bits single ended 14 bits differential 13 bits single ended 10 kS s 48 kS s 10 kS s 42 kS s 512 bytes 41 67 ns 24 MHz timebase 100 ppm of actual sample rate 10 V 20 V 10 V 5 V 4 V 2 5 V 42 V 1 25 V 1 V 10 V 144 KQ 35 ni com Trigger SOULCE nenin Software or external digital trigger System noise USB 6008 differential 1 47 mVrms USB 6009 single ended 2 93 mVrms USB 600
12. ee USER GUIDE AND SPECIFICATIONS USB 6008 6009 This guide describes how to use the National Instruments USB 6008 6009 data acquisition DAQ devices and lists specifications Introduction The NI USB 6008 6009 provides connection to eight analog input AJ channels two analog output AO channels 12 digital input output DIO channels and a 32 bit counter with a full speed USB interface Ss Note This manual revision updates naming conventions to reflect the conventions used in NI DAQmx Table 1 notes the correlation between the old and updated names Table 1 Digital Output Driver Type Naming Conventions Hardware Functionality NI DAQmx Terminology Open drain Open collector Push pull Active drive Table 2 Differences Between the USB 6008 and USB 6009 Feature USB 6008 USB 6009 AI Resolution 12 bits differential 14 bits differential 11 bits single ended 13 bits single ended Maximum AI Sample Rate 10 kS s 48 kS s Single Channel Maximum AI Sample Rate 10 kS s 42 kS s Multiple Channels Aggregate DIO Configuration Open collector Open collector or active drive Might be system dependent we NATIONAL Dp INSTRUMENTS NATIONAL INSTRUMENTS NI USB 6009 8 Inputs 14 bit Multifunction VO Digital 1 USB Cable Strain Relief Figure 1 USB 6008 6009 Figure 2 USB 6008 6009 Back View Safety Gui
13. en drain TTL LVTTL CMOS 0 5 to 5 8 V with respect to GND 4 7 KQO to5 V Input high impedance ni com Digital logic levels Level Min Max Units Input low voltage 0 3 0 8 V Input high voltage 2 0 5 8 V Input leakage current 50 uA Output low voltage I 8 5 mA 0 8 V Output high voltage Active drive push pull I 8 5mA 2 0 3 5 V Open collector open drain I 0 6mA nominal 2 0 5 0 V Open collector open drain I 8 5mA with external pull up 2 0 V resistor External Voltage 5 V output 200 mA maximum 5 V typical 4 85 V minimum 2 5 V output 1 mA maximum 2 5 V typical 42 5 V ACCURACY raison nadteniticataae 0 25 max Reference temperature drift 50 ppm C max Counter Number of counters eee eee eee eee 1 ReSOMUON iiccecutesteeen teen cee tregen ia 32 bits Counter measurement eee Edge counting falling edge Pull up resistor eee eeeeeeeeeeeees 4 17 KQ to5 V Maximum input frequency 5 MHz Minimum high pulse width 100 ns Minimum low pulse width 100 ns Input high voltage eee 2 0 V Input low voltage n se 0 8 V Bus Interface USB specification 0 0 eee eee USB 2 0 full speed USB bus speed 0 eee eeeereeeees 12 Mb s National Instruments Corporation 21 USB 6008 6009 User Guide and Specifications Power Requirements USB 4 10 to 5 25 VDC eee 80 mA typical 500 mA max USB suspend
14. he electrical distribution system referred to as MAINS voltage MAINS is a hazardous live electrical supply system that powers equipment This category is for measurements of voltages from specially protected secondary circuits Such voltage measurements include signal levels special equipment limited energy parts of equipment circuits powered by regulated low voltage sources and electronics UN Caution Do not use this module for connection to signals or for measurements within Measurement Categories II III or IV Hazardous Locations The USB 6008 6009 are not certified for use in hazardous locations Environmental The USB 6008 6009 device is intended for indoor use only Operating temperature IEC 60068 2 1 and IEC 60068 2 2 0 to 55 C Operating humidity TEC 60068 2 56 00 ceeceeceeeeteeeesteeeees 10 to 90 RH noncondensing Maximum altitude cceeeeeseeeerees 2 000 m at 25 C ambient temperature Storage temperature IEC 60068 2 1 and IEC 60068 2 2 40 to 85 C Storage humidity TEC 60068 2 56 ceececceeeseeeeteeeeees 5 to 90 RH noncondensing Pollution Degree IEC 60664 0 2 National Instruments Corporation 23 USB 6008 6009 User Guide and Specifications Electromagnetic Compatibility FEIT SS1ODS aeoaea EN 55011 Class A at 10 m FCC Part 15A above 1 GHz TMMUMILY perior iarna aeaa Industrial levels per EN 61326 1997 A2 2001 Table 1 EMC EMI kiire CE C Tick a
15. l from a gated invertor PO 7 configured as a digital input receiving a 0 V or 5 V signal from a switch RON Figure 12 Example of Connecting a Load UN Caution Exceeding the maximum input voltage ratings or maximum output ratings which are listed in the Specifications can damage the DAQ device and the computer National Instruments is not liable for any damage resulting from such signal connections Source Sink Information The default configuration of the USB 6008 6009 DIO ports is open collector allowing 5 V operation with an onboard 4 7 KQ pull up resistor An external user provided pull up resistor can be added to increase the source current drive up to a 8 5 mA limit per line as shown in Figure 13 The USB 6009 ports can also be configured as active drive using the DAQmx API allowing 3 3 V operation with a source sink current limit of 8 5 mA Refer to the NJ DAQmx Help for more information about how to set the DIO configuration National Instruments Corporation 15 USB 6008 6009 User Guide and Specifications 45V USB 6008 6009 A etoV e Re External Pull up Resistor pil 4 7 KQ Onboard Resistor RI Load s P0 0 Port Pad ee x aA e GND 1 0 Protection Figure 13 Example of Connecting External User Provided Resistor Complete the following steps to determine the value of the user provided pull up resistor 1 2 3 Place an ammeter in series wi
16. ld treat any static sensitive device Always properly ground yourself and the equipment when handling the DAQ device or connecting to it Power On States At system startup and reset the hardware sets all DIO lines to high impedance inputs The DAQ device does not drive the signal high or low Each line has a weak pull up resistor connected to it Static DIO Each of the USB 6008 6009 DIO lines can be used as a static DI or DO line You can use static DIO lines to monitor or control digital signals All samples of static DI lines and updates of DO lines are software timed Event Counter You can configure PFI 0 as a source for a gated invertor counter input edge count task In this mode falling edge events are counted using a 32 bit counter For more information about event timing requirements refer to the Specifications section Reference and Power Sources The USB 6008 6009 creates an external reference and supplies a power source 2 5 External References The USB 6008 6009 creates a high purity reference voltage supply for the ADC using a multi state regulator amplifier and filter circuit The resulting 2 5 V reference voltage can be used as a signal for self test 5 V Power Source The USB 6008 6009 supplies a 5 V 200 mA output This source can be used to power external components 3 Note While the device is in USB suspend the output is disabled National Instruments Corporation 17 USB 6008 6009 User Guid
17. nd FCC Part 15 Class A Compliant AA Note The USB 6008 6009 may experience temporary variations in analog input readings when exposed to radiated and conducted RF noise The device returns to normal operation after RF exposure is removed CE Compliance This product meets the essential requirements of applicable European Directives as amended for CE marking as follows Low Voltage Directive safety 73 23 EEC Electromagnetic Compatibility Directive EMC oo eee eeeeeereeeeees 89 336 EEC nye Note Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column Where to Go for Support The National Instruments Web site is your complete resource for technical support At ni com support you have access to everything from troubleshooting and application development self help resources to email and phone assistance from NI Application Engineers A Declaration of Conformity DoC is our claim of compliance with the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection for electronic compatibility EMC and product safety You can obtain the DoC for your product by visiting ni com certification If your product supports calibration y
18. ollution or only dry nonconductive pollution occurs The pollution has no influence e Pollution Degree 2 means that only nonconductive pollution occurs in most cases Occasionally however a temporary conductivity caused by condensation must be expected e Pollution Degree 3 means that conductive pollution occurs or dry nonconductive pollution occurs that becomes conductive due to condensation You must insulate signal connections for the maximum voltage for which the device is rated Do not exceed the maximum ratings for the device Do not install wiring while the device is live with electrical signals Do not remove or add connector blocks when power is connected to the system Avoid contact between your body and the connector block signal when hot swapping modules Remove power from signal lines before connecting them to or disconnecting them from the device Operate the device at or below the Measurement Category I Measurement circuits are subjected to working voltages and transient stresses overvoltage from the circuit to which they are connected during measurement or test Measurement categories establish standard impulse withstand voltage levels that commonly occur in electrical distribution systems The following is a description of measurement categories e Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage This catego
19. ou can obtain the calibration certificate for your product at ni com calibration USB 6008 6009 User Guide and Specifications 24 ni com National Instruments corporate headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and follow the calling instructions or dial 512 795 8248 For telephone support outside the United States contact your local branch office Australia 1800 300 800 Austria 43 0 662 45 79 90 0 Belgium 32 0 2 757 00 20 Brazil 55 11 3262 3599 Canada Calgary 403 274 9391 Canada Ottawa 613 233 5949 Canada Qu bec 450 510 3055 Canada Toronto 905 785 0085 Canada Vancouver 604 685 7530 China 86 21 6555 7838 Czech Republic 420 224 235 774 Denmark 45 45 76 26 00 Finland 385 0 9 725 725 11 France 33 0 1 48 14 24 24 Germany 49 0 89 741 31 30 India 91 80 51190000 Israel 972 0 3 6393737 Italy 39 02 413091 Japan 81 3 5472 2970 Korea 82 02 3451 3400 Malaysia 603 9131 0918 Mexico 01 800 010 0793 Netherlands 31 0 348 433 466 New Zealand 0800 553 322 Norway 47 0 66 90 76 60 Poland 48 22 3390150 Portugal 351 210 311 210 Russia 7 095 783 68 51 Singapore 65 6226 5886 Slovenia 386 3 425 4200 South Africa 27 0 11 805 8197 Spain 34 91 640 0085 Sweden 46 0 8 587 895 00 Switzerland 41
20. ry is for measurements of voltages from specially protected secondary circuits Such voltage measurements include signal levels special equipment limited energy parts of equipment circuits powered by regulated low voltage sources and electronics 1 Measurement Category as defined in electrical safety standard IEC 61010 1 Measurement Category is also referred to as Installation Category 2 Working Voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation 3 MAINS is defined as a hazardous live electrical supply system that powers equipment Suitably rated measuring circuits may be connected to the MAINS for measuring purposes National Instruments Corporation 3 USB 6008 6009 User Guide and Specifications Software e Measurement Category II is for measurements performed on circuits directly connected to the electrical distribution system This category refers to local level electrical distribution such as that provided by a standard wall outlet for example 115 V for U S or 230 V for Europe Examples of Measurement Category II are measurements performed on household appliances portable tools and similar E Series devices e Measurement Category III is for measurements performed in the building installation at the distribution level This category refers to measurements on hard wired equipment such as equipment in fixed installations distribution boards and circuit breakers Other e
21. s either a digital trigger or an event counter input National Instruments Corporation USB 6008 6009 User Guide and Specifications Analog Input You can connect analog input signals to the USB 6008 6009 through the T O connector Refer to Table 5 for more information about connecting analog input signals Analog Input Circuitry Figure 5 illustrates the analog input circuitry of the USB 6008 6009 2 5 VREF 7 Fe 30 9 kQ MUX PGA ADC Al FIFO 127 kQ e Al o vw Pan 39 2 kQ Input Range Selection Figure 5 Analog Input Circuitry MUX The USB 6008 6009 has one analog to digital converter ADC The multiplexer MUX routes one AI channel at a time to the PGA PGA The progammable gain amplifier provides input gains of 1 2 4 5 8 10 16 or 20 when configured for differential measurements and gain of 1 when configured for single ended measurements The PGA gain is automatically calculated based on the voltage range selected in the measurement application A D Converter The analog to digital converter ADC digitizes the AI signal by converting the analog voltage into a digital code USB 6008 6009 User Guide and Specifications 10 ni com Al FIFO The USB 6008 6009 can perform both single and multiple A D conversions of a fixed or infinite number of samples A first in first out FIFO buffer holds data during AI acquisitions to ensure that no
22. th the load Place a variable resistor between the digital output line and the 5 V Adjust the variable resistor until the ammeter current reads as the intended current The intended current must be less than 8 5 mA Remove the ammeter and variable resistor from your circuit Measure the resistance of the variable resistor The measured resistance is the ideal value of the pull up resistor Select a static resistor value for your pull up resistor that is greater than or equal to the ideal resistance Re connect the load circuit and the pull up resistor To protect the USB 6008 6009 against overvoltage undervoltage and overcurrent conditions as well as ESD events you should avoid these fault conditions by using the following guidelines If you configure a DIO line as an output do not connect it to any external signal source ground signal or power supply If you configure a DIO line as an output understand the current requirements of the load connected to these signals Do not exceed the specified current output limits of the DAQ device USB 6008 6009 User Guide and Specifications 16 ni com National Instruments has several signal conditioning solutions for digital applications requiring high current drive e Ifyou configure a DIO line as an input do not drive the line with voltages outside of its normal operating range The DIO lines have a smaller operating range than the AI signals e Treat the DAQ device as you wou
23. xamples are wiring including cables bus bars junction boxes switches socket outlets in the fixed installation and stationary motors with permanent connections to fixed installations e Measurement Category IV is for measurements performed at the primary electrical supply installation lt 1 000 V Examples include electricity meters and measurements on primary overcurrent protection devices and on ripple control units Software support for the USB 6008 6009 for Windows 2000 XP is provided by NI DAQmx The NI DAQmx CD contains example programs that you can use to get started programming with the USB 6008 6009 Refer to the NJ DAQmx for USB Devices Getting Started Guide that shipped with your device and is also accessible from Start All Programs National Instruments NI DAQ for more information nye Note For information about non Windows operating system support refer to ni com info and enter rddqld VI Logger The NI DAQmx CD includes VI Logger Lite which is an easy to use configuration based tool specifically designed for data logging applications The application is available at Start All Programs National Instruments VI Logger USB 6008 6009 User Guide and Specifications 4 ni com Hardware The following block diagram shows key functional components of the USB 6008 6009 External S vous Power 5 V 200 mA X 3 Supply 7 D PFI O a D 3 E B USB Microcontroller
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