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Chapter 4

Signal Connections

6711/6713/6715 User Manual

4-14

www.ni.com

Waveform Generation Timing Connections

The analog group defined for the 6711/6713 device is controlled by 
WFTRIG, UPDATE*, and UISOURCE.

WFTRIG Signal

Any PFI pin can externally input the WFTRIG signal, which is available as 
an output on the PFI6/WFTRIG pin.

As an input, the WFTRIG signal is configured in the edge-detection mode. 
You can select any PFI pin as the source for WFTRIG and configure the 
polarity selection for either rising or falling edge. The selected edge of the 
WFTRIG signal starts the waveform generation for the DACs. The update 
interval (UI) counter is started if you select internally generated UPDATE*.

As an output, the WFTRIG signal reflects the trigger that initiates 
waveform generation. This is true even if the waveform generation is 
externally triggered by another PFI. The output is an active high pulse with 
a pulse width of 25 to 50 ns. This output is set to tri-state at startup.

Figures 4-6 and 4-7 show the input and output timing requirements for the 
WFTRIG signal.

Figure 4-6.  

WFTRIG Input Signal Timing

Rising-edge

polarity

Falling-edge

polarity

t

w

t

w

= 10 ns minimum

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Содержание 6711

Страница 1: ...utilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stoc...

Страница 2: ...g Voltage Output Device for PCI PXI CompactPCI PCMCIA 1394 Bus Computers 6711 6713 6715 User Manual December 1999 Edition Part Number 322080B 01 Artisan Technology Group Quality Instrumentation Guaran...

Страница 3: ...6 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico D F 5 280 7625 Mexico Monterrey 8 357 7695 Netherlands 0348 433466 Norway 32 2...

Страница 4: ...llow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accid...

Страница 5: ...ication Software 1 4 NI DAQ Driver Software 1 5 Register Level Programming 1 6 Optional Equipment 1 7 Custom Cabling 1 7 Chapter 2 Installation and Configuration Software Installation 2 1 Hardware Ins...

Страница 6: ...15 UISOURCE Signal 4 16 General Purpose Timing Signal Connections 4 17 GPCTR0_SOURCE Signal 4 17 GPCTR0_GATE Signal 4 18 GPCTR0_OUT Signal 4 18 GPCTR0_UP_DOWN Signal 4 19 GPCTR1_SOURCE Signal 4 19 GP...

Страница 7: ...iming I O Connections 4 12 Figure 4 6 WFTRIG Input Signal Timing 4 14 Figure 4 7 WFTRIG Output Signal Timing 4 15 Figure 4 8 UPDATE Input Signal Timing 4 15 Figure 4 9 UPDATE Output Signal Timing 4 16...

Страница 8: ...multifunction analog output DIO and timing input output I O device for PCI PXI CompactPCI 1394 and PCMCIA PC Card buses Conventions Used in This Manual The following conventions are used in this manu...

Страница 9: ...ommonly needed information for the modules chassis and software Your SCXI hardware user manuals If you are using SCXI read these manuals next for detailed information about signal connections and modu...

Страница 10: ...your connections SCXI chassis manuals If you are using SCXI read these manuals for maintenance information on the chassis and installation instructions Related Documentation The following documents co...

Страница 11: ...s it is easily software configured and calibrated The 6711 6713 device is a completely switchless and jumperless data acquisition DAQ device for the PXI PCI CompactPCI or 1394 bus This feature is made...

Страница 12: ...11 6713 Only Using PXI compatible products with standard CompactPCI products is an important feature provided by the PXI Specification revision 1 0 If you use a PXI compatible plug in device in a stan...

Страница 13: ...or 6715 device 6711 6713 6715 User Manual NI DAQ driver for PC compatibles version 6 5 or higher 6 7 or higher for DAQCard 6715 One of the following software packages and documentation LabVIEW for Wi...

Страница 14: ...e components or any other sign of damage Notify National Instruments if the device appears damaged in any way Do not install a damaged device into your computer Never touch the exposed pins of connect...

Страница 15: ...in popular spreadsheet programs and word processors Using ComponentWorks LabVIEW LabWindows CVI or VirtualBench software will greatly reduce the development time for your data acquisition and control...

Страница 16: ...Environment NI DAQ and Your Hardware Register Level Programming The final option for programming any National Instruments DAQ hardware is to write register level software Writing register level progr...

Страница 17: ...if you frequently change device interconnections If you want to develop your own cable however the following guidelines can be useful Route the analog lines separately from the digital lines When usi...

Страница 18: ...ing system and application software package You can now install your hardware Hardware Installation You can install the PCI PXI 6711 6713 device in any available PXI PCI expansion slot in your compute...

Страница 19: ...peripheral slot that you have chosen 4 Touch a metal part on the chassis to discharge any static electricity that might be on your clothes or body 5 Insert the PXI 6711 6713 device in the 5 V slot Use...

Страница 20: ...he I O cable The DAQCard has two connectors a 68 pin PCMCIA bus connector on one end and a 68 pin I O connector on the other end Insert the PCMCIA bus connector into any available Type II PCMCIA slot...

Страница 21: ...fully compatible with the industry standard PCI Local Bus Specification Revision 2 0 This specification allows the PCI system to automatically perform all bus related configurations and requires no us...

Страница 22: ...presents an overview of the hardware functions on your PCI PXI 6711 6713 and DAQPad 6713 device Figure 3 1 shows a block diagram of the 6711 6713 device Figure 3 2 shows a block diagram of the 6715 d...

Страница 23: ...Address Data Address Data Address Control EEPROM Control AO Control Calibration Control DMA IRQ Register Decode FPGA DAQ STC Bus Interface PCI MITE Generic Bus Interface PCI Bus Interface IRQ DMA CH5...

Страница 24: ...a CH0 12 Bit DAC CH0 Amp CH1 12 Bit DAC CH2 12 Bit DAC CH3 12 Bit DAC CH1 Amp CH2 Amp CH3 Amp 0 75 A 5 V Digital Thermometer CIS EEPROM Address Control Data Control DAQ STC Analog Output Timing Contro...

Страница 25: ...value The glitch energy differs from code to code and appears as distortion in the frequency spectrum Each analog output channel contains a reglitch circuit that generates uniform glitch energy at eve...

Страница 26: ...s are designed to enable the 6711 6713 device to both control and be controlled by other devices and circuits There are a total of 13 timing signals internal to the DAQ STC that you can control by an...

Страница 27: ...lications You can also individually enable each of the PFI pins to output a specific internal timing signal For example if you need the UPDATE signal as an output on the I O connector software can tur...

Страница 28: ...o the RTSI bus and can receive any of these timing signals This signal connection scheme is shown in Figure 3 4 Figure 3 4 RTSI Bus Signal Connection Refer to the Timing Connections section of Chapter...

Страница 29: ...n shielded cable DAQPad 6713 The DAQPad 6713 allows connection to all analog and some digital signals through BNC connectors You can access the remaining digital signals using the removable screw term...

Страница 30: ...C AOGND DGND 1 No Connect on PCI PXI 6711 PFI8 GPCTR0_SOURCE PFI7 GPCTR1_OUT PFI4 GPCTR1_GATE PFI3 GPCTR1_SOURCE PFI2 DGND DGND DGND EXTSTROBE NC DIO3 DIO7 DIO2 DGND DIO5 DIO0 DGND AOGND AOGND AOGND D...

Страница 31: ...C DAC2OUT DAC3OUT DAC4OUT1 DAC5OUT1 DAC6OUT1 DAC7OUT1 NC NC AOGND FREQ_OUT PFI7 STARTSCAN PFI5 UPDATE PFI2 CONVERT PFI0 TRIG1 SCANCLK 5 V PFI9 GPCTR0_GATE PFI4 GPCTR1_GATE DIO7 DIO6 DIO5 DIO4 DGND EXT...

Страница 32: ...O signals DIO6 and 7 can control the up down signal of general purpose counters 0 and 1 respectively 5 V DGND Output 5 VDC Source These pins are fused for up to 1 A 0 75 A DAQCard 6715 1 of 5 V suppl...

Страница 33: ...is one of the PFIs PFI7 cannot be an output PFI8 GPCTR0_SOURCE DGND Input Output PFI8 Counter 0 Source As an input this is one of the PFIs As an output this is the GPCTR0_SOURCE signal This signal ref...

Страница 34: ...5 5 at 10 20 V s AOGND AO DGND DIO VCC DO 0 1 Short circuit to ground 1 A 0 75 A DAQCard 6715 1 DIO 0 7 DIO Vcc 0 5 13 at Vcc 0 4 24 at 0 4 1 1 50 k pu EXTSTROBE DO 3 5 at Vcc 0 4 5 at 0 4 1 5 50 k pu...

Страница 35: ...4 1 5 50 k pu PFI9 GPCTR0_GATE DIO Vcc 0 5 3 5 at Vcc 0 4 5 at 0 4 1 5 50 k pu GPCTR0_OUT DO 3 5 at Vcc 0 4 5 at 0 4 1 5 50 k pu FREQ_OUT DO 3 5 at Vcc 0 4 5 at 0 4 1 5 50 k pu 1 The 5 V line on the...

Страница 36: ...ence Analog output configuration options are explained in the Analog Output section in Chapter 3 Hardware Overview The following ranges and ratings apply to the EXTREF input Usable input voltage range...

Страница 37: ...erence signal for the DIO port You can program all lines individually as inputs or outputs Caution Exceeding the maximum input voltage ratings which are listed in Table 4 2 can damage the 671X device...

Страница 38: ...e shown in Figure 4 4 Digital output applications include sending TTL signals and driving external devices such as the LED shown in Figure 4 4 The hardware up down control for general purpose counters...

Страница 39: ...X device is routed through the 10 programmable function inputs labeled PFI0 through PFI9 These signals are explained in detail in the next section Programmable Function Input Connections These PFIs ar...

Страница 40: ...nce is demonstrated in Figure 4 5 which shows how to connect an external PFI0 source and an external PFI2 source to two 671X device PFI pins Figure 4 5 Timing I O Connections PFI0 Source DGND PFI0 PFI...

Страница 41: ...an input you can individually configure each PFI for edge or level detection and for polarity selection as well You can use the polarity selection for any of the seven timing signals but the edge or l...

Страница 42: ...ected edge of the WFTRIG signal starts the waveform generation for the DACs The update interval UI counter is started if you select internally generated UPDATE As an output the WFTRIG signal reflects...

Страница 43: ...gnal updates the outputs of the DACs In order to use UPDATE you must set the DACs to posted update mode As an output the UPDATE signal reflects the actual update pulse that is connected to the DACs Th...

Страница 44: ...gnal do not occur when gated by the software command register gate UISOURCE Signal Any PFI pin can externally input the UISOURCE signal which is not available as an output on the I O connector The UI...

Страница 45: ...externally input the GPCTR0_SOURCE signal which is available as an output on the PFI8 GPCTR0_SOURCE pin As an input the GPCTR0_SOURCE signal is configured in the edge detection mode You can select any...

Страница 46: ...generating interrupts saving the counter contents and so on As an output the GPCTR0_GATE signal reflects the actual gate signal connected to general purpose counter 0 This is true even if the gate is...

Страница 47: ...CE Signal Any PFI pin can externally input the GPCTR1_SOURCE signal which is available as an output on the PFI3 GPCTR1_SOURCE pin As an input the GPCTR1_SOURCE signal is configured in the edge detecti...

Страница 48: ...pin As an input the GPCTR1_GATE signal is configured in edge detection mode You can select any PFI pin as the source for GPCTR1_GATE and configure the polarity selection for either rising or falling e...

Страница 49: ...eneral purpose counter 1 You have two software selectable output options pulse on TC and toggle output polarity on TC The output polarity is software selectable for both options This output is set to...

Страница 50: ...g edges The same timing diagram but with the source signal inverted and referenced to the falling edge of the source signal would apply when the counter is programmed to count falling edges The GATE i...

Страница 51: ...is a 4 bit counter that can divide its input clock by the numbers 1 through 16 The input clock of the frequency generator is software selectable from the internal 10 MHz and 100 kHz timebases The out...

Страница 52: ...lowest most difficult and most accurate Loading Calibration Constants The 671X device is factory calibrated before shipment at approximately 25 C to the levels indicated in Appendix A Specifications T...

Страница 53: ...ignore a small1 amount of gain error self calibration should be sufficient External Calibration The 671X device has an onboard calibration reference to ensure the accuracy of self calibration Its spec...

Страница 54: ...Other Considerations The CalDACs adjust the gain error of each analog output channel by adjusting the value of the reference voltage supplied to that channel This calibration mechanism is designed to...

Страница 55: ...device These specifications are typical at 25 C unless otherwise noted 6711 6713 Device Analog Output Output Characteristics Number of channels 8 voltage outputs 6713 6715 devices 4 voltage outputs 6...

Страница 56: ...14 8 740 769 480 100 1 These numbers apply to continuous waveform generation which allows for the time it takes to reset the FIFO to the beginning when cycling through it This additional time about 20...

Страница 57: ...ration 200 mV max Gain error relative to internal reference After calibration 0 01 of output max Before calibration 0 5 of output max Gain error relative to external reference 0 to 0 5 of output max n...

Страница 58: ...tput stability Any passive load up to 1500 pF Protection Short circuit to ground Power on state 0 V External Reference Input Range 11 V Overvoltage protection 25 V powered on 15 V powered off Input im...

Страница 59: ...ion 60 dB typ generating a 10 V 100 points 10 kHz sine wave summing 9 harmonics Stability Offset temperature coefficient 50 V C Gain temperature coefficient Internal reference 25 ppm C External refere...

Страница 60: ...timers 20 MHz 100 kHz Frequency scaler 10 MHz 100 kHz Base clock accuracy 0 01 over operating temperature Max source frequency 20 MHz Min source pulse duration 10 ns edge detect mode Min gate pulse du...

Страница 61: ...or falling edge Pulse width 10 ns min RTSI and PXI Trigger Lines PCI 6711 6713 and DAQPad 6713 Trigger lines 0 6 7 RTSI clock 1 PXI 6711 6713 Trigger lines 0 5 6 Star trigger 1 Clock 1 Bus Interface P...

Страница 62: ...rrent used from the I O connector Physical Dimensions not including connectors PCI 6711 6713 17 5 by 10 7 cm 6 87 by 4 2 in PXI 6711 6713 16 by 10 cm 6 3 by 3 9 in DAQPad 6713 30 5 by 24 4 by 4 45 cm...

Страница 63: ...unter timer functions two 24 bit counters The groups can be configured independently with timing resolutions of 50 ns or 10 s With the DAQ STC you can interconnect a wide variety of internal timing si...

Страница 64: ...to generate a waveform but I discovered with a digital oscilloscope that there are glitches on the output signal Is this normal When it switches from one voltage to another any DAC produces glitches...

Страница 65: ...gnals together If you are using NI DAQ with LabVIEW and you want to connect external signal sources to the PFI lines you can use AO Clock Config AO Trigger and Gate Config CTR Mode Config and CTR Puls...

Страница 66: ...utions including special sections devoted to our newest products The database is updated daily in response to new customer experiences and feedback Troubleshooting Wizards Step by step guides lead you...

Страница 67: ...n access these Web sites from www ni com worldwide If you have trouble connecting to our Web site please contact your local National Instruments office or the source from which you purchased your Nati...

Страница 68: ...ro 10 6 m milli 10 3 k kilo 103 M mega 106 G giga 109 t tera 1012 Numbers Symbols degrees greater than greater than or equal to less than less than or equal to per percent plus or minus positive of or...

Страница 69: ...ircuit a proprietary semiconductor component designed and manufactured to perform a set of specific functions B bipolar a signal range that includes both positive and negative values for example 5 V t...

Страница 70: ...DAQ data acquisition a system that uses the computer to collect receive and generate electrical signals DAQ STC Data acquisition system timing controller An application specific integrated circuit AS...

Страница 71: ...on DAQ devices to temporarily store incoming or outgoing data until that data can be read or written For example an analog input FIFO stores the results of A D conversions until the data can be read i...

Страница 72: ...l GPCTR1_SOURCE general purpose counter 1 clock source signal GPCTR1_UP_DOWN general purpose counter 1 up down signal H h hour hex hexadecimal Hz hertz I INL integral nonlinearity For an ADC deviation...

Страница 73: ...National Instruments driver software for DAQ hardware noise an undesirable electrical signal Noise comes from external sources such as the AC power line motors generators transformers fluorescent lig...

Страница 74: ...tion Input PFI3 GPCTR1_ SOURCE PFI3 general purpose counter 1 source PFI4 GPCTR1_GATE PFI4 general purpose counter 1 gate PFI5 UPDATE PFI5 update PFI6 WFTRIG PFI6 waveform trigger PFI8 GPCTR0_ SOURCE...

Страница 75: ...Xtensions for Instrumentation the National Instruments product line for conditioning low level signals within an external chassis near sensors so only high level signals are sent to DAQ devices in the...

Страница 76: ...percentage thermocouple a temperature sensor created by joining two dissimilar metals The junction produces a small voltage as a function of the temperature TRIG trigger signal tsc source clock period...

Страница 77: ...nt 2 a LabVIEW software module VI which consists of a front panel user interface and a block diagram program VIH volts input high VIL volts input low Vin volts in Vm measured voltage VOH volts output...

Страница 78: ...on A 3 dynamic characteristics A 4 to A 5 external reference input A 4 output characteristics A 1 to A 2 stability A 5 transfer characteristics A 3 voltage output A 4 AOGND signal analog output signal...

Страница 79: ...CXI devices 4 13 description table 4 4 signal summary table 4 6 F field wiring considerations 4 23 FREQ_OUT signal description table 4 5 general purpose timing connections 4 23 signal summary table 4...

Страница 80: ...evice 4 2 671X device with SH68 50 cable 4 3 signal descriptions table 4 4 to 4 5 J J2 pin assignments for PXI 6711 6713 table 1 3 L LabVIEW and LabWindows CVI application software 1 4 to 1 5 M manual...

Страница 81: ...rammable function inputs PXI using with CompactPCI 1 2 to 1 3 PXI trigger line specifications A 7 Q questions and answers general information B 1 to B 2 installation and configuration B 2 timing and d...

Страница 82: ...trigger lines A 7 timing I O A 6 to A 7 stability specifications A 5 T technical support resources C 1 to C 2 theory of operation See hardware overview timing connections 4 11 to 4 23 general purpose...

Страница 83: ...tions about B 2 waveform generation timing connections 4 14 to 4 17 UISOURCE signal 4 16 to 4 17 UPDATE signal 4 15 to 4 16 WFTRIG signal 4 14 to 4 15 Web support from National Instruments C 1 to C 2...

Страница 84: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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