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DAQ Analog Output Series

Analog Output Series User Manual

NI 6711/6713/DAQCard-6715, NI 6722/6723, and NI 6731/6733 Devices

Analog Output Series User Manual

June 2007
370735E-01

Содержание NI 6711

Страница 1: ...DAQ Analog Output Series Analog Output Series User Manual NI 6711 6713 DAQCard 6715 NI 6722 6723 and NI 6731 6733 Devices Analog Output Series User Manual June 2007 370735E 01...

Страница 2: ...Lebanon 961 0 1 33 28 28 Malaysia 1800 887710 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...

Страница 3: ...photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation National Instruments respects...

Страница 4: ...t of Communications DOC Changes or modifications not expressly approved by NI could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission Thi...

Страница 5: ...6 Field Wiring Considerations 1 6 Programming Devices in Software 1 7 Chapter 2 I O Connector 68 Pin AO I O Connector Pinouts 2 1 68 68 Pin Extended AO I O Connector Pinout 2 5 Terminal Name Equivalen...

Страница 6: ...g an Internal Source 3 9 Using an External Source 3 9 Outputting the AO Sample Clock Signal 3 9 Other Timing Requirements 3 10 AO Sample Clock Timebase Signal 3 11 Master Timebase Signal 3 11 Getting...

Страница 7: ...6 Counter 1 Source Signal 5 7 Counter 1 Gate Signal 5 7 Counter 1 Internal Output Signal 5 8 Counter 1 Up Down Signal 5 9 Frequency Output Signal 5 9 Master Timebase Signal 5 9 Getting Started with Co...

Страница 8: ...er Methods 9 2 Direct Memory Access DMA 9 2 Interrupt Request IRQ 9 2 Programmed I O 9 2 Changing Data Transfer Methods between DMA and IRQ 9 2 Chapter 10 Triggering Triggering with a Digital Source 1...

Страница 9: ...s icon denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash When this symbol is marked on a product refer to the Read Me First Safety and Radio Freque...

Страница 10: ...AQmx for Windows software how to install your NI DAQmx supported DAQ device and how to confirm that your device is operating properly Select Start All Programs National Instruments NI DAQ DAQ Getting...

Страница 11: ...nts NI DAQmx Base Documentation Getting Started Guide Getting Started with NI DAQmx Base for Linux and Mac Users describes how to install your NI DAQmx Base software your NI DAQmx Base supported DAQ d...

Страница 12: ...w to take an NI DAQmx measurement in LabVIEW using the DAQ Assistant VI and Function Reference Measurement I O VIs and Functions Describes the LabVIEW NI DAQmx VIs and properties Taking Measurements C...

Страница 13: ...ual Studio NET select Measurement Studio Measurement Studio Reference To create an application in Visual C Visual C or Visual Basic NET follow these general steps 1 In Visual Studio NET select File Ne...

Страница 14: ...evice Documentation and Specifications The NI 6711 6713 DAQCard 6715 Specifications contains all specifications for the NI 6711 NI 6713 and NI DAQCard 6715 AO Series devices The NI 6722 6723 Specifica...

Страница 15: ...e documents at ni com manuals DAQ specifications and some DAQ manuals are available as PDFs You must have Adobe Acrobat Reader with Search and Accessibility 5 0 5 or later installed to view the PDFs R...

Страница 16: ...tioning cables that connect the various devices to the accessories the analog output device and the programming software Refer to the Using Accessories with Devices section for a list of devices and t...

Страница 17: ...of the following three timing groups AI two 24 bit two 16 bit counters not used on AO Series devices AO three 24 bit one 16 bit counter General purpose counter timer functions two 24 bit counters You...

Страница 18: ...re stored in the EEPROM of the device as calibration constants Before performing a measurement these constants are read out of the EEPROM and are used to adjust the calibration hardware on the device...

Страница 19: ...nnector blocks with screw terminals I O connector cables RTSI bus cables Low channel count digital signal conditioning modules devices and accessories For more specific information about these product...

Страница 20: ...B 68 TB 68 NI 6731 6733 SH68 68 EP BNC 2110 CB 68LP CB 68LPR SCB 68 TB 68 Table 1 2 Overview of DAQ Accessories for Analog Output Devices Accessory Description BNC 2110 BNC connector block for 68 pin...

Страница 21: ...r Board Mating Connectors To access this document go to ni com info and enter the info code rdsmbm Field Wiring Considerations The following recommendations apply for all signal connections to the AO...

Страница 22: ...lasses attributes and properties for creating applications for your device NI DAQ 7 x includes two NI DAQ drivers Traditional NI DAQ Legacy and NI DAQmx Each driver has its own API hardware configurat...

Страница 23: ...Studio directory contains a link to the ActiveX control examples for use with Measurement Studio NI DAQ Examples VBasic directory contains the examples not associated with Measurement Studio NI DAQmx...

Страница 24: ...I O connectors Note Some hardware accessories may not yet reflect the NI DAQmx terminal names If you are using an AO Series device in Traditional NI DAQ Legacy refer to Table 2 1 for the Traditional...

Страница 25: ...ND AO 3 AO GND AO GND NC AO GND NC AO GND AO GND NC AO GND D GND PFI 8 CTR 0 SOURCE PFI 7 CTR 1 OUT PFI 4 CTR 1 GATE PFI 3 CTR 1 SOURCE PFI 2 D GND D GND D GND EXT STROBE NC P0 3 P0 7 P0 2 D GND P0 5...

Страница 26: ...AO 0 AO GND AO GND AO 3 AO GND AO GND AO 5 AO GND AO 6 AO GND AO GND NC AO GND D GND PFI 8 CTR 0 SOURCE PFI 7 CTR 1 OUT PFI 4 CTR 1 GATE PFI 3 CTR 1 SOURCE PFI 2 D GND D GND D GND EXT STROBE NC P0 3...

Страница 27: ...D P0 4 CAL AO 1 AO 0 AO GND AO GND AO 3 AO GND AO GND AO 5 AO GND AO 6 AO GND AO GND NC AO GND D GND PFI 8 CTR 0 SOURCE PFI 7 CTR 1 OUT PFI 4 CTR 1 GATE PFI 3 CTR 1 SOURCE PFI 2 D GND D GND D GND EXT...

Страница 28: ...ational Instruments Corporation 2 5 Analog Output Series User Manual 68 68 Pin Extended AO I O Connector Pinout The NI 6723 has two 68 pin I O connectors Figure 2 4 shows the pin assignments for both...

Страница 29: ...AO GND AO GND AO 7 AO GND AO GND NC 1 35 2 36 3 37 4 38 5 39 6 40 7 41 8 42 9 43 10 44 11 45 12 46 13 47 14 48 15 49 16 50 17 51 18 52 19 53 20 54 21 55 22 56 23 57 24 58 25 59 26 60 27 61 28 62 29 6...

Страница 30: ...ware products The revised terminal names used in this document are usually similar to the names they replace Refer to Table 2 1 for a list of Traditional NI DAQ Legacy terminal names and their NI DAQm...

Страница 31: ...URCE CTR 1 SOURCE or CTR 1 SRC PA PB PC P0 P1 P2 PFI PFI PFI_ PFI SCANCLK AI HOLD COMP or AI HOLD SISOURCE AI Sample Clock Timebase STARTSCAN AI SAMP CLK or AI SAMP TRIG1 AI START TRIG or AI START TRI...

Страница 32: ...0 7 D GND Input or Output Digital I O signals These pins drive and receive digital signals P0 6 and P0 7 can control the up down signal of Counters 0 and 1 respectively 5 V D GND Output 5 VDC source T...

Страница 33: ...apter 5 Counters CTR 1 OUT D GND Output Counter 1 Output Signal This pin emits the Ctr1InternalOutput signal For more information refer to Chapter 5 Counters PFI 5 AO SAMP CLK D GND Input PFI 5 As an...

Страница 34: ...ult input for the Ctr0Gate signal Output Counter 0 Gate Signal As an output this pin emits the Ctr0Gate signal This signal reflects the actual gate signal connected to Counter 0 For more information r...

Страница 35: ...o D GND to power external circuitry A self resetting fuse protects the supply from overcurrent conditions The fuse resets automatically within a few seconds after the overcurrent condition is removed...

Страница 36: ...og Output Circuitry DACs Digital to analog converters DACs convert digital codes to analog voltages DAC FIFO The DAC FIFO enables analog output waveform generation It is a first in first out FIFO memo...

Страница 37: ...nge on a voltage output on your AO Series device as follows LSB output voltage range 2resolution of your device where the output range is determined by your reference selection Using AO EXT REF you ca...

Страница 38: ...ransitions This uniform glitch energy appears as a multiple of the update rate in the frequency spectrum This reglitch circuit does not eliminate the glitches it only makes them more uniform in size B...

Страница 39: ...een samples can be deterministic Hardware timed generations can use hardware triggering For more information refer to Chapter 10 Triggering Hardware timed operations can be buffered or non buffered A...

Страница 40: ...must fit within the FIFO size The advantage of using FIFO regeneration is that it does not require communication with the main host memory when the operation is started thereby preventing any problem...

Страница 41: ...O Sample Clock that causes all AO channels to update simultaneously Figure 3 3 summarizes the timing and routing options provided by the analog output timing engine Figure 3 3 Analog Output Engine Rou...

Страница 42: ...signal on your DAQ device Refer to Device Routing in MAX in the NI DAQmx Help or the LabVIEW Help in version 8 0 for more information Figure 3 4 shows the timing requirements of the ao StartTrigger d...

Страница 43: ...se ao Pause Trigger specify a source and a polarity The source can be an external signal connected to any PFI or RTSI 0 6 pin The source can also be one of several other internal signals on your DAQ d...

Страница 44: ...e NI DAQmx Help or the LabVIEW Help in version 8 0 for more information Using an External Source You can use a signal connected to any PFI or RTSI 0 6 pin as the source of ao SampleClock Figure 3 6 sh...

Страница 45: ...The ao StartTrigger signal starts this counter It is stopped automatically by hardware after a finite acquisition completes or manually through software When using an internally generated ao SampleCl...

Страница 46: ...l then you should use the ao SampleClock signal rather than the ao SampleClockTimebase If you do not specify an external sample clock timebase NI DAQ uses the Onboard Clock Figure 3 9 shows the timing...

Страница 47: ...Integration Bus RTSI for more information on which signals are available through RTSI Figure 3 10 shows the timing requirements for MasterTimebase Figure 3 10 MasterTimebase Timing Requirements Gettin...

Страница 48: ...High speed digital waveform acquisition NI 6731 6733 only Figure 4 1 shows the circuitry of one DIO line Figure 4 1 AO Series Digital I O Block Diagram The DIO terminals are named P0 0 7 on the I O c...

Страница 49: ...ble sources The DO waveform generation FIFO stores the digital samples The NI 6731 6733 can use DMA transfers to move data from the system memory to the DO waveform generation FIFO The DAQ device move...

Страница 50: ...on You must ensure that the time between two active edges of the do SampleClock is not too short If the time is too short the DO waveform generation FIFO is not able to read the next sample fast enoug...

Страница 51: ...software Using an Internal Source To use di SampleClock with an internal source specify the signal source and the polarity of the signal The source can be any of the following signals AO Sample Clock...

Страница 52: ...I has several signal conditioning solutions for digital applications requiring high current drive If you configure a PFI or DIO line as an input do not drive the line with voltages outside of its norm...

Страница 53: ...d sensing external device states such as the state of the switch shown in the figure Digital output applications include sending TTL signals and driving external devices such as the LED shown in the f...

Страница 54: ...Digital Output Digital Waveform Generation Digital Waveform Acquisition NI 6731 6733 only For correlated DIO examples in Traditional NI DAQ Legacy refer to the KnowledgeBase document What Devices Othe...

Страница 55: ...ng Counters support two different triggering actions start and pause Only digital triggers can initiate these actions For more information on digital triggers refer to the Triggering with a Digital So...

Страница 56: ...on counter timing signals Counter Timing Summary Figure 5 2 shows the timing requirements for the gate and source input signals and the timing specifications for the output signals on your device Figu...

Страница 57: ...ts in an uncertainty of one source clock period with respect to unsynchronized gating sources The output timing parameters are referenced to the signal at the source input or to one of the internally...

Страница 58: ...l Counter 0 Gate Signal You can select any PFI as well as many other internal signals like the Counter 0 Gate Ctr0Gate signal The Ctr0Gate signal is configured in edge detection or level detection mod...

Страница 59: ...se on TC and toggle output polarity on TC The output polarity is software selectable for both options Figure 5 5 shows the behavior of the Ctr0InternalOutput signal Figure 5 5 Ctr0InternalOutput Signa...

Страница 60: ...R 0 OUT is set to high impedance at startup Figure 5 6 shows the relationship of CTR 0 OUT and Ctr0InternalOutput Figure 5 6 CTR 0 OUT and Ctr0InternalOutput Counter 0 Up Down Signal You can externall...

Страница 61: ...ing Requirements The maximum allowed frequency is 20 MHz with a minimum pulse width of 10 ns high or low There is no minimum frequency For most applications unless you select an external source the 20...

Страница 62: ...ity is software selectable for both options Figure 5 9 shows the behavior of the Ctr1InternalOutput signal Figure 5 9 Ctr1InternalOutput Behavior You can use Ctr1InternalOutput in the following applic...

Страница 63: ...put clock by the numbers one through 16 The input clock of the frequency generator is software selectable from the internal 10 MHz and 100 kHz timebases The output polarity is software selectable This...

Страница 64: ...ounting Edges Frequency Measurement Period Measurement Pulse Width Measurement Semi Period Measurement Pulse Generation You can perform these measurements through programmed I O interrupt or DMA data...

Страница 65: ...ng When using the PFI pin as an input you can individually configure each PFI for edge or level detection and for polarity selection You can use the polarity selection for any of the timing signals bu...

Страница 66: ...ut PFI pins are labeled with the timing signal that can be output on it For example PFI 8 is labeled PFI 8 CTR 0 Source The following timing signals can be output on PFI pins AO Start Trigger Signal A...

Страница 67: ...scription of which routes are possible on your device click the Device Routes tab in Measurement Automation Explorer Timing Signal Routing The DAQ STC provides a flexible interface for connecting timi...

Страница 68: ...configurable For example the signal routing multiplexer for controlling the ao SampleClock signal is shown in Figure 7 1 Figure 7 1 Signal Routing Multiplexer on Analog Output Devices Figure 7 1 shows...

Страница 69: ...our device can damage your device and the computer NI is not liable for any damage resulting from signal connections that exceed the maximum ratings The 10 programmable function interface PFI pins lab...

Страница 70: ...r more information about routing signals in software refer to the NI DAQmx Help Table 7 1 Signal Routing in Software Language Program Function LabVIEW NI DAQmx DAQmx Export Signal vi and DAQmx Connect...

Страница 71: ...ation To access this document go to ni com info and enter the info code rdrtcp Note The NI DAQCard 6715 does not use the RTSI bus RTSI Triggers The seven RTSI trigger lines on the RTSI bus provide a f...

Страница 72: ...PCI RTSI bus signal connection Figure 8 1 PCI RTSI Bus Signal Connection RTSI Bus Connector Switch RTSI Switch RTSI Trigger 7 Trigger 0 6 DAQ STC Ctr0 Source Ctr0Gate Ctr0InternalOutput Ctr0Out Ctr1So...

Страница 73: ...mebase to generate the necessary timing signals for controlling DAC updates or general purpose signals at the I O connector This timebase is also called the Master Timebase or Onboard Clock For more i...

Страница 74: ...le Devices With the RTSI bus and the routing capabilities of the DAQ STC there are several ways to synchronize multiple devices depending on your application NI recommends that you use a common timeba...

Страница 75: ...ndard CompactPCI chassis you cannot use PXI specific functions but you can still use the basic plug in device functions For example the RTSI bus on a PXI AO Series device is available in a PXI chassis...

Страница 76: ...ata transfer speed is tightly coupled to the rate at which the CPU can service the interrupt requests If you are using interrupts to acquire data at a rate faster than the rate the CPU can service the...

Страница 77: ...ormation refer to the Analog Output Triggering section of Chapter 3 Analog Output and the Counter Triggering section of Chapter 5 Counters Triggering with a Digital Source Your DAQ device can generate...

Страница 78: ...DAQ device to perform an action in response to a trigger from a digital source The action can affect analog output generation counter behavior For more information refer to the Analog Output Triggerin...

Страница 79: ...analog output AO digital I O DIO and timing I O TIO devices for PCI bus computers The NI 6711 features four AO channels with 12 bit resolution eight lines of TTL compatible DIO two 24 bit counter time...

Страница 80: ...onnector and the NI 6713 has eight channels of voltage output at the I O connector The reference for the AO circuitry is software selectable per channel The reference can be either internal or externa...

Страница 81: ...put Timing Control Digital I O Trigger Counter Timing I O RTSI Bus Interface DMA IRQ Bus Interface Address Data Address Control EEPROM Control AO Control Calibration Control DMA IRQ Register Decode FP...

Страница 82: ...r timers for TIO a 68 pin AO I O connector Because the NI DAQCard 6715 have no DIP switches jumpers or potentiometers they are easily software configured and calibrated For the NI DAQCard 6715 connect...

Страница 83: ...12 Bit DAC AO 4 Amp AO 5 12 Bit DAC AO 6 12 Bit DAC AO 7 12 Bit DAC AO 5 Amp AO 6 Amp AO 7 Amp Data AO 0 12 Bit DAC AO 0 Amp AO 1 12 Bit DAC AO 2 12 Bit DAC AO 3 12 Bit DAC AO 1 Amp AO 2 Amp AO 3 Amp...

Страница 84: ...ls with 13 bit resolution eight lines of TTL compatible DIO two 24 bit counter timers for TIO a 68 pin extended AO I O connector Because the NI 6722 6723 have no DIP switches jumpers or potentiometers...

Страница 85: ...Bus 13 Bit DAC 13 Bit DAC 13 Bit DAC 13 Bit DAC 13 Bit DAC 13 Bit DAC 13 Bit DAC EEPROM PFI Trigger Timing Digital I O 8 16 Bit ADC x4 x4 Load DAC Update Busy Clear DMA IRQ DAQ STC Analog Output Timi...

Страница 86: ...f TTL compatible DIO two 24 bit counter timers for TIO a 68 pin AO I O connector Because the NI 6731 6733 have no DIP switches jumpers or potentiometers they are easily software configured and calibra...

Страница 87: ...Digital I O Trigger Counter Timing I O RTSI Bus Interface DMA IRQ Bus Interface Address Data Address Control EEPROM Control AO Control Calibration Control DMA IRQ Register Decode FPGA DAQ STC Bus Inte...

Страница 88: ...generate is determined by the update clock frequency fu and the number of samples per cycle Sc The onboard 20 MHz clock that generates fu can only be divided by an integer For example suppose you wan...

Страница 89: ...for the outputs of the NI 6713 is 0 V with an accuracy of 200 mV When the computer is powered on the output values might go to 100 110 mV which are within the specifications When you run LabVIEW or th...

Страница 90: ...l Instruments Application Engineers make sure every question receives an answer For information about other technical support options in your area visit ni com services or contact your local office at...

Страница 91: ...ni com calibration If you searched ni com and could not find the answers you need contact your local office or NI corporate headquarters Phone numbers for our worldwide offices are listed at the front...

Страница 92: ...of or minus Ohms Percent Plus or minus Positive of or plus A A Amperes the unit of electric current A D Analog to digital AC Alternating current ADC Analog to digital converter an electronic device o...

Страница 93: ...ht lines The name used for a counter physical channel is an exception because that physical channel name is not the name of the terminal where the counter measures or generates the digital signal 2 Vi...

Страница 94: ...DAQ devices DAQ STC Data acquisition system timing controller an application specific integrated circuit ASIC for the system timing requirements of a general A D and D A system data acquisition DAQ 1...

Страница 95: ...mmands the device accepts E EEPROM Electrically erasable programmable read only memory ROM that can be erased with an electrical signal and reprogrammed ESD Electrostatic Discharge a high voltage low...

Страница 96: ...ds and so on A module contains everything required to occupy one or more slots in a mainframe SCXI and PXI devices are modules monotonicity A characteristic of a DAC in which the analog output always...

Страница 97: ...omputers electrical storms welders radio transmitters and internal sources such as semiconductors resistors and capacitors Noise corrupts signals you are trying to send or receive NRSE Nonreferenced s...

Страница 98: ...to express the rate at which a digitizer or D A converter or DAQ device samples an analog signal scan interval Controls how often a scan is initialized is regulated by the AI SAMP signal scan rate Re...

Страница 99: ...y An upgrade to the earlier version of NI DAQ Traditional NI DAQ Legacy has the same VIs and functions and works the same way as NI DAQ 6 9 x You can use both Traditional NI DAQ Legacy and NI DAQmx on...

Страница 100: ...nts typically used with a PC that has the functionality of a classic stand alone instrument 2 A LabVIEW software module VI which consists of a front panel user interface and a block diagram program VI...

Страница 101: ...calibration certificate NI resources C 2 conventions ix correlated DIO DI Sample Clock 4 4 digital waveform acquisition 4 3 digital waveform generation 4 2 DO Sample Clock 4 2 counter applications 5...

Страница 102: ...ure 2 4 NI 6723 figure 2 5 NI 6731 figure 2 2 NI 6733 figure 2 3 NI DAQCard 6715 figure 2 3 signal descriptions 2 9 I O protection 4 5 instrument drivers NI resources C 1 interrupt request IRQ 9 2 int...

Страница 103: ...n 3 3 related documentation x RTSI 8 1 S signal descriptions 2 9 software NI resources C 1 support technical C 1 synchronizing multiple devices 8 4 T technical support xv C 1 terminal name equivalents...

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