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DAQ NI 6115/6120 User Manual Multifunction I/O Devices for PCI/PXI/CompactPCI Bus Computers NI 6115/6120 User Manual November 2002 Edi tion Part Number 3228 12C-01.
Support Worldwide Technical Support and Product Info rmation ni.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Aust in, Texas 78759-3504 USA Tel: 512 683 0100 Worldwide O.
Important Information Warranty The NI PCI-6115, NI PXI-6115, NI PCI-6120, an d NI PXI-6120 devices are warranted against defects in materials and workmans hip f or a period of one year from the date of shipment, as evidenced by re ceipts or other docu mentation.
Compliance FCC/Canada Radio Frequency Interference Compliance Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless co mmunications from inte rference.
Canadian Departmen t of Communications This Class B digital apparatus meets a ll requirements of the Cana dian Inte rfere nce-Causing Equi pment Regulations. Cet appareil numérique de la classe B respecte toutes les ex igences du Règlement sur le matériel brouilleur du Cana da.
© National Instruments Corporation vii NI 6115/6120 User Manual Contents About This Manual Conventions ............ .............. .............. .............. .............. .............. ............ .............. ....... x i National Instruments D ocumentatio n .
Contents NI 6115/6120 User Manual viii ni.com Programmable Function Inputs ....................... .............. .............. .............. ...... 3-12 Device and RTSI Clocks ............. .............. .............. .............. .............
Contents © National Instruments Corporation ix NI 6115/6120 User Manual GPCTR1_UP_DOWN Signal ..................... .............. .............. .......... 4-37 FREQ_OUT Signal ....................... .............. .............. .............. ...
© National Instruments Corporation xi NI 6115/6120 User Manual About This Manual This manual describes the electrical and mechanical aspects of the NI 6115/6120 and contains inform ation concerning its operation and programming.
About This Manual NI 6115/6120 User Manual xii ni.com bold Bold text denotes items that you must select or click in the software, such as menu items and dialog box options.
About This Manual © National Instruments Corporation xiii NI 6115/6120 User Manual configuration instructions, specification information about the D A Q hardware, and application hints . • Software documentation—Y ou may hav e both application software and NI-D A Q documentation.
© National Instruments Corporatio n 1-1 NI 6115/6120 User Manual 1 Introduction This chapter describes the NI 6115/6120 , lists what you need to get started , describes the optional software and optional equipment , and explains how to unpack the device.
Chapter 1 Introduction NI 6115/6120 User Manual 1-2 ni.com you do not need the R TSI cable for system triggering and timing on the PXI. In addition, a phase-locked loop (PLL) circuit accomplishes the .
Chapter 1 Introduction © National Instruments Corporatio n 1-3 NI 6115/6120 User Manual What Y ou Need to Get Started To set up and use the NI 6115/6120, yo u need the following: ❑ A computer or a .
Chapter 1 Introduction NI 6115/6120 User Manual 1-4 ni.com Software Programming Choices When programming National Instrumen ts DAQ hardware, you can use an NI application development environmen t (ADE) or other ADEs.
Chapter 1 Introduction © National Instruments Corporatio n 1-5 NI 6115/6120 User Manual Figure 1-1. The Relationship Among the Programming Environment, NI-DAQ, and the Hardware T o download a free copy of the mo st recent v ersion of NI-DA Q, click Downloa d Software at ni.
Chapter 1 Introduction NI 6115/6120 User Manual 1-6 ni.com D A Q hardware. These Activ eX con trols provide a high-le vel programming interface for b uilding virtual instrument s (VIs). For V isual C++ deve lopers, Measurement Studio of fers a set of V isual C++ classes and tools to integrate those classes into V isual C ++ applications.
Chapter 1 Introduction © National Instruments Corporatio n 1-7 NI 6115/6120 User Manual • Route the analog l ines separately from t he digital lines. • When using a cable shield, use separate shields for the analog and digital halves of the cable.
Chapter 1 Introduction NI 6115/6120 User Manual 1-8 ni.com Safety Information The following section contains important safety inform ation that you must follow when installing and using the product. Do not operate the product in a manner not specified in this document.
Chapter 1 Introduction © National Instruments Corporatio n 1-9 NI 6115/6120 User Manual Operate the product at or belo w the installation catego ry 1 marked on the hardware label.
© National Instruments Corporatio n 2-1 NI 6115/6120 User Manual 2 Installing and Configuring the NI 6115/6120 This chapter explains how to install and configure the NI 6115/6120 . Installing the Software Before you install th e NI 6115/6120, comp lete the following steps to install the software: 1.
Chapter 2 Installing and Co nfiguring the NI 6115/6120 NI 6115/6120 User Manual 2-2 ni.com or bus master de vices. NI recommends installing the NI PXI-6115/6120 in such a slot. Note The PXI specif ication requires all slots to support b us master devices, b ut the CompactPCI specification does not.
Chapter 2 Installing and Configu ring the NI 6115/6 120 © National Instruments Corporatio n 2-3 NI 6115/6120 User Manual 8. Replace the co ver . 9. Plug in and p ower on the computer . The NI PCI-6115/6120 is now installed. Y ou are now ready to configure the hardware and software.
© National Instruments Corporatio n 3-1 NI 6115/6120 User Manual 3 Hardware Over view This chapter presents an o vervie w of the hardware functio ns on the NI 6115/6120. Figures 3-1 and 3-2 provide block diagrams for the NI 6115 and NI 6120, respectively .
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-2 ni.com Figure 3-2. NI 612 0 Block Diagram Analog Input The following sections descri be in detail each AI category.
Chapter 3 Hardware Overview © National Instruments Corporatio n 3-3 NI 6115/6120 User Manual Input Polarity and Input Range The NI 6115/6120 has bipolar inputs o nly. Bipolar input means that the midpoint of the input voltage ran ge is centered at zero volts.
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-4 ni.com Considerations for Se lecting Input Ranges The range you select depends on the e xpected range of the incoming signal. A large input range can accommodate a large signal variation but reduces the voltage resolution.
Chapter 3 Hardware Overview © National Instruments Corporatio n 3-5 NI 6115/6120 User Manual Analog Output The NI 6115/6120 supplies two channel s of AO voltage at the I/O connector. The range is fixed at bipolar ±10 V. The A O channels on the NI 6115 contain 12-bit DA Cs that are capable of 4 MS/s for one channel or 2.
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-6 ni.com Figure 3-3. Analog T rigger Block Diagram for the NI 6115/6120 In below-lo w-lev el analog triggering mode, the trigger is generated when the signal value is less than lowValue , as sho wn in Figure 3-4.
Chapter 3 Hardware Overview © National Instruments Corporatio n 3-7 NI 6115/6120 User Manual Figure 3-5. Above-High-Level Analog T riggering Mode In inside-region analog triggering mod e, the trigger is generated when t he signal v alue is between the lowV alue and the highV alue , as Figure 3-6 sho ws.
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-8 ni.com In low-hysteresis analog trigg ering mo de, the trigger is generated when the signal value is less than lo wV alue , with the hysteresis specified by highV alue , as Figure 3-8 shows. Figure 3-8.
Chapter 3 Hardware Overview © National Instruments Corporatio n 3-9 NI 6115/6120 User Manual Figure 3-9. Eff ects of Hardware and Soft ware Filtering on Antialiasing Phase-Locked Loop Circuit ♦ NI .
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-10 ni.com Figure 3-10. PLL Block Diagram Correlated Digital I/O The NI 6115/6120 contains eight lines of DIO for general-purpose use. You can software-configure g roups of individual lines for either input or output.
Chapter 3 Hardware Overview © National Instruments Corporation 3-11 NI 6115/6120 User Manual configurable. F or example, Figure 3-11 sho ws th e signal routing multiplexer for controlling t he ST AR TSCAN signal.
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-12 ni.com Programmable Function Inputs The 10 PFIs are connected to the signal routing multiplexer for each timing signal, and software can select one of the PFIs as the ex ternal source for a given timing signal.
Chapter 3 Hardware Overview © National Instruments Corporation 3-13 NI 6115/6120 User Manual In PCI, you can access all seven R TSI lines (R TSI<0..6 >) through their R TSI cable. W ith the NI PXI-611 5/6120, R TSI<0..5> con nects to PXI T rigger <0.
Chapter 3 Hardware Overview NI 6115/6120 User Manual 3-14 ni.com Figure 3-13. PXI R TSI Bus Signal Connections Refer to the Connecting Ti ming Signals section of Chapter 4, Connecting Signals , for a description of the signals shown in Figures 3-12 and 3-13.
© National Instruments Corporatio n 4-1 NI 6115/6120 User Manual 4 Connecting Signals This chapter describes how to connect input and out put signals to the NI 6115/6120 using the device I/ O connector. I/O Connector Figure 4-1 shows the pin assignments for the 68-pin I/ O connector on the NI 6115/6120.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-2 ni.com Figure 4-1. I/O Connector Pi n Assignment for the NI 611 5/6120 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45.
Chapter 4 Connecting Signals © National Instruments Corporatio n 4-3 NI 6115/6120 User Manual I/O Connector Sig nal Descriptions Table 4-2. Signal Descriptions for I/O Connector Pins Signal Name Reference Dir ection Description A CH<0.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-4 ni.com PFI0/TRIG1 DGND Input Output PFI0/T rigger 1—As an input, this is either a PF I or the source for the hardware analog trigger . PFI signals are explained in the Connecting Timing Signals section later in this chapter.
Chapter 4 Connecting Signals © National Instruments Corporatio n 4-5 NI 6115/6120 User Manual PFI8/GPCTR0_SOURCE DGND Input Output PFI8/Counte r 0 Source—As an input, this is a PFI. As an output, this is the GPCT R0_SOURCE signal. This signal reflects the actual source c onnected to the general-purpose counter 0.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-6 ni.com Table 4-4. An alog I/O Summar y for the NI 6120 Signal Name Signal T ype and Direction Impedance Input/ Output Protection (V olts) On/Off Source (mA at V) Sink (mA at V) Rise Tim e (ns) Bias AC H < 0 .
Chapter 4 Connecting Signals © National Instruments Corporatio n 4-7 NI 6115/6120 User Manual T ypes of Signal Sources When making signal connections, you mu st first determine whether the signal sources are floating or ground-referenced. Th e following sections describe these two types of signals.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-8 ni.com source. You must tie the ground reference of a floating signal to the NI 6115/6120 AI ground to establish a local or onboard reference for the signal. Otherwise, the measured input si gnal varies as the source floats out of the common-mode input range.
Chapter 4 Connecting Signals © National Instruments Corporatio n 4-9 NI 6115/6120 User Manual Connections for Ground-Ref erenced Signal Sources Figures 4-2 and 4-3 show how to connect a ground-referenced signal source to a channel on the NI 6115 and NI 6120, respectively.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-10 ni.com Figure 4-3. Pseudodifferential Input C onnections on the NI 6120 for Ground-Referenced Signals W ith th is type of connection, the PGI.
Chapter 4 Connecting Signals © National Instruments Corporation 4-11 NI 6115/6120 User Manual Connections for Nonreferenced or Floating Si gnal Sources Figures 4-4 and 4-5 show how to connect a floating signal source to a channel on the NI 6115 and NI 6120, respectiv ely.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-12 ni.com Figure 4-5. Differential Input Connections on the NI 6120 for Nonreferenced Signals Figures 4-4 and 4-5 show a bias resist or connected between A CH0– and the floating signal source ground.
Chapter 4 Connecting Signals © National Instruments Corporation 4-13 NI 6115/6120 User Manual Like an y amplifier , the common-mode rejection ratio (CMRR) of the PGIA is limited at high frequen cy . This lim itation has been comp ensated for in the design of the NI 6115/6120 by using a common-mode chok e on each channel.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-14 ni.com Connecting Analog Output Signals The AO signals are DAC0OUT, DAC1OUT, and AOGND. D AC0OUT is the v oltage output signal for A O channel 0. D A C1OUT is the voltage output signal for A O channel 1.
Chapter 4 Connecting Signals © National Instruments Corporation 4-15 NI 6115/6120 User Manual Connecting Digital I/O Signals The DIO signals are DIO<0..7> and DGND. DIO< 0..7> are the signals making up the DIO port, an d DGND is the ground-reference signal for t he DIO port.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-16 ni.com Figure 4-7 shows DIO<0..3> conf igured for digital input and DIO<4..7> configured for digital ou tput. Digital input appli cations include recei ving TTL signals and sensing external devi ce states such as the switch state shown in Figure 4-7.
Chapter 4 Connecting Signals © National Instruments Corporation 4-17 NI 6115/6120 User Manual Figure 4-8. Clock Signal Drivi ng DI and DO Signals Figure 4-9 shows a DIO operation dri ven b y the A O Update signal on its rising edge.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-18 ni.com Figure 4-10 shows a DIO operation dri ven by an R TSI clock signal on its falling edge. Figure 4-10. Falling-Edge RTSI Clock Si gnal Driving a DIO Signal Power Connections Two pins on the I/O connector supply +5 V fro m the computer power supply using a self-resetting fuse.
Chapter 4 Connecting Signals © National Instruments Corporation 4-19 NI 6115/6120 User Manual The D A Q signals are explained in the DAQ Timing Connections section later in this chapter .
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-20 ni.com Programmable Functi on Input Connections You can externally control 13 intern al timing signals from the PFI pins. The source for each of these signals is software selectab le from any PFI when you want external control.
Chapter 4 Connecting Signals © National Instruments Corporation 4-21 NI 6115/6120 User Manual Figure 4-12. T ypical Posttriggered Acquisition Pretriggered data acquisition allows you to vie w data that is acquired b efore the trigger of interest in addition to data acquired aft er the trigger .
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-22 ni.com Refer to Chapter 3, Hardware Overview , for more information on analog triggering. As an output, TRIG1 reflects the action that initiates a DA Q sequence ev en if another PFI is externally triggering the acquisition.
Chapter 4 Connecting Signals © National Instruments Corporation 4-23 NI 6115/6120 User Manual selection for either rising or falling edge. The selected edge of TRIG2 initiates the posttrigg ered phase of a pretriggered D A Q sequence. In pretriggered mode, the TRIG1 signal initiates the acquisi tion.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-24 ni.com ST ARTSCAN Signal Any PFI pin can receive as an input th e STARTSCAN signal, which is available as an output on the PFI7/STARTSCAN pin. Refer to Figures 4-18 and 4-19 for the relatio nship of STARTSCAN to the DAQ sequence.
Chapter 4 Connecting Signals © National Instruments Corporation 4-25 NI 6115/6120 User Manual Figure 4-19. ST ARTSCAN Output Signal T iming The CONVER T* pulses are masked of f until th e de vice generates ST AR TSCAN.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-26 ni.com CONVER T* Signal Any PFI pin can receive as an in put the CONVERT* signal, which is available as an output on the PFI2/CONVERT* pin. Refer to Figures 4-20 and 4-21 for the relationship of CONVER T* to the D A Q sequence.
Chapter 4 Connecting Signals © National Instruments Corporation 4-27 NI 6115/6120 User Manual The ADC switches t o hold mode wi thin 20 ns of the selected edge. This hold-mode delay tim e is a function of temperature and does not vary from one con version to the next.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-28 ni.com Either the 20 MHz or 100 kHz inte rnal timebase generates SISOURCE unless you select some external source.
Chapter 4 Connecting Signals © National Instruments Corporation 4-29 NI 6115/6120 User Manual EXTSTROBE* Signal EXTSTROBE* is an output-only signal that generates either a single pulse or a sequence of eight p ulses in th e hardware-strobe mo de. An external device can use this signal to latch signals or to trigger events.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-30 ni.com Figures 4-25 and 4-26 show the tim ing requirements for WF TRIG. Figure 4-25. WF TRIG Input Signal Timing Figure 4-26. WF TRIG Output Signal T iming UPDA TE* Signal Any PFI pin can receive as an in put the UPDATE* si gnal, which is available as an output on the PFI5/UPDATE* pin.
Chapter 4 Connecting Signals © National Instruments Corporation 4-31 NI 6115/6120 User Manual Figures 4-27 and 4-28 show the timing requirements for UP D A TE*. Figure 4-27. UPDA TE* Input Signal T iming Figure 4-28. UPDA TE* Output Signal Timing The D ACs are updated within 100 ns of the leading edge.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-32 ni.com Figure 4-29. UISOURCE Signal T iming The maximum allowed frequency is 20 MHz, with a minimum pulse widt h of 10 ns high or low .
Chapter 4 Connecting Signals © National Instruments Corporation 4-33 NI 6115/6120 User Manual Figure 4-30 shows the timing requirements for GPCTR0_SOURCE. Figure 4-30. GPCTR0_SOURCE Signal Timing The maximum allowed frequency is 20 MHz, with a minimum pulse width of 10 ns high or low .
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-34 ni.com Figure 4-31 shows the timing requirements for GPCTR0_GA TE. Figure 4-31. GPCTR0_GA TE Signal Timing in Edge-Detection Mode GPCTR0_OUT Signal This signal is available as an output on the GPCTR0_OUT pin.
Chapter 4 Connecting Signals © National Instruments Corporation 4-35 NI 6115/6120 User Manual GPCTR0_UP_DOWN Signal This signal can be received as an inpu t on the DIO6 pin and is not available as an output on the I/O connector. The general-purpose counter 0 count s down when this pin is at a logic low and cou nt up when it is at a logic high.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-36 ni.com GPCTR1_GA TE Signal Any PFI pin can receive as an input th e GPCTR1_GATE signal, which is available as an output on the PFI4/GPCTR1_GATE pin. As an input, GPCTR1_GA TE is configured in edge-detection mode.
Chapter 4 Connecting Signals © National Instruments Corporation 4-37 NI 6115/6120 User Manual Figure 4-35 shows the timing requireme nts for GPCTR1_OU T . Figure 4-35. GPCTR1_OUT Signal Timing GPCTR1_UP_DOWN Signal This signal can be received as an inpu t on the DIO7 pin and is not available as an output on the I/O conn ector.
Chapter 4 Connecting Signals NI 6115/6120 User Manual 4-38 ni.com The GA TE and OUT signal transitions shown in Figure 4-36 are referenced to the rising edge of the SOURCE sign al. This timi ng diagram assumes that the counters are programmed to count rising edges.
Chapter 4 Connecting Signals © National Instruments Corporation 4-39 NI 6115/6120 User Manual Field Wiring Considerations Environmental noise can se riously affect the meas urement accuracy of the NI 6115/6120 if you do not take prop er care when running signal wires between signal sources and the device.
© National Instruments Corporatio n 5-1 NI 6115/6120 User Manual 5 Calibration This chapter discusses the calibration procedures for the NI 6115/6120. NI-DAQ includ es calibration fun ctions fo r performin g all of the steps in the calibration process.
Chapter 5 Calibr ation NI 6115/6120 User Manual 5-2 ni.com This method of calibration is not very accurate because it does not take into account the fact that the de vice measur ement and output voltage errors can v ary with time and temperature. It is be tter to self-calibrate when the device is installed in the en vironment in which it is used.
Chapter 5 Calibration © National Instruments Corporatio n 5-3 NI 6115/6120 User Manual T o externally calibrate your de vice, be sure to use a very accurate external reference. The reference should be se veral times more accurate than the device itself.
© National Instruments Corporation A-1 NI 611 5/6120 User Manual A Specifications This appendix list s the specifications of the NI 6115/6120. These specifications are typical at 25 °C unless otherwise noted. Analog Input Input Characteristics Number of channels .
Appendix A Specifications NI 6115/6120 User Manual A-2 ni.com ACH+ to ACHGND NI 6115 ................... .............. ....100 G Ω NI 6120 ................... .............. ....100 G Ω Input bias current ............. .............. .........±300 pA Input offset current .
Appendix A Specifications © National Instruments Corporation A-3 NI 6115/6120 User Manual Table A-1. NI 6115 Analog Input DC Accuracy I nformation Nomina l Range (V) Absolute Accuracy Relative Accura.
Appendix A Specifications NI 6115/6120 User Manual A-4 ni.com Dynamic Characteristics Interchannel skew .................... .............. .1 ns typ Analog filters Number NI 6115 ................. .............. ......2 NI 6120 ................. ....
Appendix A Specifications © National Instruments Corporation A-5 NI 6115/6120 User Manual Table A-3. NI 6115 Analog Input Dynamic Characteristics Input Range Bandwidth (MHz) 1 SFDR T yp (dB) 2 SFDR Max (dB) CMRR (dB) 3 System Noise (LSB rms ) 4 ±50 V 5.
Appendix A Specifications NI 6115/6120 User Manual A-6 ni.com Figure A-1. NI 6115 T otal Harmonic Distortion Plus Noise (THD + N) 0.1 38 44 50 56 62 68 74 1.0 10.0 THD+N (–dBc) F requency (MHz) ±10 V ±5 V ±2 V ±1 V ±0.5 V ±0.2 V Full-Scale (–0.
Appendix A Specifications © National Instruments Corporation A-7 NI 6115/6120 User Manual Figure A-2. NI 6120 T otal Harmonic Distortion Plus Noise (THD + N) Full-Scale (–0.3 dB) Input Amplitude Frequency (kHz) 75 77 79 81 83 85 ± 5 V ± 2 V ± 1 V ± 0.
Appendix A Specifications NI 6115/6120 User Manual A-8 ni.com Figure A-3. NI 6115 High-V oltage THD + N 0.1 38 44 50 56 62 68 74 1.0 10.0 THD+N (–dBc) F requency (MHz) High-V oltage Ranges, only ±1.
Appendix A Specifications © National Instruments Corporation A-9 NI 6115/6120 User Manual Figure A-4. NI 6120 High-V oltage THD + N High-Voltage Ranges, only ±10 V Input Amplitude 80.
Appendix A Specifications NI 6115/6120 User Manual A-10 ni.com Figure A-5. NI 6115 THD + N with Filters 10 62 63.2 65.6 66.8 68 70.4 71.6 100 1000 THD+N (–dBc) F requency (kHz) With Filters, Full-Scale Input f or Range of ±1 V 69.
Appendix A Specifications © National Instruments Corporation A-11 N I 6115/6120 User Manual Figure A-6. NI 6120 THD + N with Filters Stability Recommended warm-up time ................ 15 min Offset temperature coefficient Pregain NI 6115 .......... .
Appendix A Specifications NI 6115/6120 User Manual A-12 ni.com Onboard calibration reference Level ................ .............. .............. ....5.000 V (±2.5 mV) (actual value stored in EEPROM) Temperature coefficient............. ......±4.1 ppm/°C max Long-term stability .
Appendix A Specifications © National Instruments Corporation A-13 N I 6115/6120 User Manual V oltage Output Ranges .......................... .............. ........... . ±10 V Output coupling....................... .............. . DC Output impedance .
Appendix A Specifications NI 6115/6120 User Manual A-14 ni.com Dynamic Characteristics Slew rate NI 6115 ..................... .............. .........300 V/ µ s NI 6120 ..................... .............. .........15 V/ µ s Noise NI 6115 .........
Appendix A Specifications © National Instruments Corporation A-15 N I 6115/6120 User Manual Digital I/O Number of channels ...................... ......... 8 input/output Compatibility ...... .............. .............. ....... TTL/CMOS Power-on state .
Appendix A Specifications NI 6115/6120 User Manual A-16 ni.com Base clock accuracy ......... ........... ............± 0.01% Max source frequency................. ............20 MHz Min source pulse duration ......... ............10 ns, edge-detect mode Min gate pulse duration .
Appendix A Specifications © National Instruments Corporation A-17 N I 6115/6120 User Manual Digital T rigger Compatibility ...... .............. .............. ....... TTL Response .......... ............................. ......... Rising or falling edge Pulse width .
Appendix A Specifications NI 6115/6120 User Manual A-18 ni.com Relative humidity .................... .............. .10 to 90% noncondensing Pollution Degree (indoor use only) .
© National Instruments Corporation B-1 NI 6115/6120 User Manual B Common Questions This appendix contains a list of commonly asked questions and their answers relating to usage and special features of the NI 6115/6120.
Appendix B Common Question s NI 6115/6120 User Manual B-2 ni.com What type of 5 V pr otection does the NI 6115/6120 hav e? The NI 6115/6120 has 5 V lines equipped with a self-resetting 1 A fuse.
Appendix B Common Questions © National Instruments Corporation B-3 NI 6115/6120 User Manual Analog Input and Output Why is ther e a minimum sampling rate on the NI 6115? The NI 6115 makes use of a pipelined ADC in order to achie ve high sampling rates.
Appendix B Common Question s NI 6115/6120 User Manual B-4 ni.com I’m using the D A Cs to generate a wa veform, b ut I discov ered with a digital oscilloscope that there ar e gl itches on the output signal. Is this normal? When the D AC switches from one volta ge to another , any D A C produces glitches due to released charges.
Appendix B Common Questions © National Instruments Corporation B-5 NI 6115/6120 User Manual T i ming and Digital I/O What types of triggering can be hard ware-imp lemented on th e NI 6115/6120? Hardware digital and analog triggering are both supported on the NI 6115/6120.
Appendix B Common Question s NI 6115/6120 User Manual B-6 ni.com Caution If you enable a PFI line for output, do not connect any e xternal signal source to it; if you do, you can damage the device, th e computer , and the connected equipment.
© National Instruments Corporation C-1 NI 6115/6120 User Manual C T echnical Support and Professional Ser vices Visit the following sections of the NI Web site at ni.
Appendix C T echnical Support and Professional Ser vices NI 6115/6120 User Manual C-2 ni.com • Calibration Certificate —If your product suppor ts calibration, you can obtain the calibration certif icate for your product at ni.com/calibration . If you searched ni.
© National Instruments Corporation G- 1 NI 6115/6120 User Manual Glossar y Pref ix Meaning V alue p- pico- 10 –1 2 n- nano- 10 –9 µ -m i c r o - 1 0 –6 m- milli- 10 –3 k- kilo- 10 3 M- me ga.
Glossary NI 6115/6120 User Manual G- 2 ni.com A A amperes A/D analog-to-digital A C alternating current A CH analog input channel signal A CH 0GND analog input channel ground sign al ADC analog-to-dig.
Glossary © National Instruments Corporation G- 3 NI 6115/6120 User Manual C CC e l s i u s CalD AC calibration DA C cm centimeter CMOS complementary metal-oxide semicond uctor CMRR common-mode reject.
Glossary NI 6115/6120 User Manual G- 4 ni.com D A Q -STC data acquisition system timing controller—an application-specific integrated circuit (ASIC) for the system tim ing requirements of a general .
Glossary © National Instruments Corporation G- 5 NI 6115/6120 User Manual ESD electrostatic discharge EXTSTR OBE* external stro be signal F F farad—a measurement unit of capacitance FIFO first-in f.
Glossary NI 6115/6120 User Manual G- 6 ni.com GPCTR1_UP_DOWN general-purpos e counter 1 up do w n signal grounded signal sources signal sources with voltage signals that are referenced to a system gro.
Glossary © National Instruments Corporation G- 7 NI 6115/6120 User Manual L LabVIEW Laboratory V irtual Instrument Engineering W orkbench—a program dev elopment application based on the programming.
Glossary NI 6115/6120 User Manual G- 8 ni.com N NC not connected (signal) NI National Instruments NI-D A Q National Instruments driv er software for D A Q hardware noise an undesirable electrical sign.
Glossary © National Instruments Corporation G- 9 NI 6115/6120 User Manual PFI2/CONVER T* PFI2/con vert PFI3/GPCTR1_ SOURCE PFI3/gener al purpose counter 1 source PFI4/GPCTR1_GA TE PFI4/general-purpos.
Glossary NI 6115/6120 User Manual G-10 ni.com rise time the difference in time between the 10% and 90% points of the step response of a system rms root mean sq uare R TD r esistiv e temperature detect.
Glossary © National Instruments Corporation G-11 NI 6115/6120 User Manual T TC terminal count—the ending v alue of a counter t gh gate hold time t gsu gate setup tim e t gw gate pulse width THD tot.
Glossary NI 6115/6120 User Manual G-12 ni.com V Vv o l t s V CC collector common voltag e—po wer supply voltage V cm common-mode no ise and ground p otential VCXO voltage-controlled crystal oscillat.
© National Instruments Corporatio n I-1 NI 6115/6120 User Manual Index Numerics +5 V signal description (table), 4-3 incorrect connecti ons (caution), 4-15 self-resetting fuse, 4-18, B-2 A above-high-level analog triggering mod e, 3-7 AC input coupling, 3-4 ACH<0.
Index NI 6115/6120 User Manual I-2 ni.com AOGND signal analog output signal connections, 4-14 description (table), 4-3 avoiding false triggering (note), 3-6 B base address for NI 6115/6120 device, B-2.
Index © National Instruments Corporatio n I-3 NI 6115/6120 User Manual professional services, C-1 technical support, C-1 D DAC0OUT signal analog output signal connections, 4-14 description (table), 4.
Index NI 6115/6120 User Manual I-4 ni.com external calibration, 5-2 EXTSTROBE* signal description (table), 4-3 signal summary (table), 4-6 timing connections, 4-2 9 F field wiring considerations, 4-39.
Index © National Instruments Corporatio n I-5 NI 6115/6120 User Manual GPCTR1_UP_DOWN signal digital I/O lines, 3-10 general-purpose timing connect ions, 4-37 ground-referenced signal sources descrip.
Index NI 6115/6120 User Manual I-6 ni.com N National Instruments calibration certificate, C-2 customer education, C-1 Declaration of Conformity, C-1 documentation, xii professional services, C-1 syste.
Index © National Instruments Corporatio n I-7 NI 6115/6120 User Manual PFI9/GPCTR0_GATE signal See also GPCTR0_GATE signal description (table), 4-5 signal summary (table), 4-7 PFIs (programmable fun .
Index NI 6115/6120 User Manual I-8 ni.com signal connections analog input connection s common-mode signal rejection, 4-12 floating signal sources, 4-11 ground-referenced signal sources, 4-9 nonreferen.
Index © National Instruments Corporatio n I-9 NI 6115/6120 User Manual bus interface, A-17 digital I/O, A-15 electromagnetic co mpatibility, A -18 environmental, A-17 physical, A-17 power requirement.
Index NI 6115/6120 User Manual I-10 ni.com TRIG1 signal See also PFI0/TRIG1 signal input timing (f igure), 4-22 output timing (figure), 4-22 RTSI bus signal connections (figure), 3-13 timing connectio.
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Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit National Instruments NI 6115/6120. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei National Instruments NI 6115/6120 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
