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NI PXIe-4357 User Manual

Figure 2-5.

Non-Sequential Channel Conversion Sequence

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Summary of Contents for PXIe-4357

Page 1: ...NI SC Express NI PXIe 4357 User Manual Subtitle NI PXIe 4357 User Manual March 2012 373440A 01...

Page 2: ...d current events National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin Texas 78759 3504 USA Tel 512 683 0100 For further support information refer to the Technical Support an...

Page 3: ...ance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable...

Page 4: ...ECT AGAINST SYSTEM FAILURES INCLUDING BUT NOT LIMITED TO BACK UP OR SHUT DOWN MECHANISMS BECAUSE EACH END USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS TESTING PLATFORMS AND BECAUSE...

Page 5: ...ons 2 5 Measuring Temperature with RTD Sensors 2 5 Temperature Accuracy Considerations 2 6 2 Wire Measurement Mode 2 6 3 Wire Measurement Mode 2 6 4 Wire Measurement Mode 2 6 Noise Rejection 2 6 Measu...

Page 6: ...e 2 2 Connecting a Shielded RTD to the NI PXIe 4357 2 3 Figure 2 3 NI PXIe 4357 Measurement Circuitry Diagram 2 9 Figure 2 4 NI PXIe 4357 Block Diagram 2 10 Figure 2 5 Non Sequential Channel Conversio...

Page 7: ...environment This product is intended for use in industrial locations There is no guarantee that harmful interference will not occur in a particular installation when the product is connected to a test...

Page 8: ...I PXIe 4357 and TB 4357 Installation Guide and Terminal Block Specifications document for information about supported accessories and cables Calibration You can obtain the calibration certificate and...

Page 9: ...efer to the NI PXIe 4357 and TB 4357 Installation Guide and Terminal Block Specifications document You can connect any combination of 2 3 or 4 wire RTD sensors to the PXIe 4357 and independently confi...

Page 10: ...of up to 60 VDC relative to chassis ground However regardless of the channel to ground voltage the module is not designed to operate with external voltages between channels If you are using a shielded...

Page 11: ...ons section for definitions of each signal Refer to the NI PXIe 4357 and TB 4357 Installation Guide and Terminal Block Specifications document for signal locations on the terminal block Terminal Block...

Page 12: ...1 AI6 24 EX1 EX6 EX6 23 RSVD AI11 AI16 22 EX11 AI11 AI16 21 EX11 EX16 EX16 20 AI2 AI7 19 EX2 AI2 AI7 18 EX2 EX7 EX7 17 RSVD AI12 AI17 16 EX12 AI12 AI17 15 EX12 EX17 EX17 14 AI3 AI8 13 EX3 AI3 AI8 12 E...

Page 13: ...Studio To find out more about using NI DAQmx refer to the NI DAQmx Help which is installed at Start All Programs National Instruments NI DAQ by default Table 2 2 I O Connector Signal Descriptions I O...

Page 14: ...vely canceling out the effects of lead wire resistance However in order for the compensation to be effective the resistance of the lead wire connecting the EX terminal of the module to the sensor and...

Page 15: ...hortcut menu Select NI DAQmx Task in the Create New window and click Next Note Within LabVIEW LabWindows CVI Measurement Studio or LabVIEW Signal Express you can also access the DAQ Assistant Refer to...

Page 16: ...rminal at which you measure an analog signal 3 Specify a name such as myRTDChannel to assign 4 Select the appropriate values for the RTD type resistance configuration excitation internal excitation va...

Page 17: ...2 3 The NI PXIe 4357 is isolated from the PXI Express chassis and from other modules in the system NI PXIe 4357 Measurement Circuitry Figure 2 3 shows the measurement circuitry on the NI PXIe 4357 Fi...

Page 18: ...le clock on the NI PXIe 4357 controls the acquisition rate With software timing the acquisition rate is determined by the software and operating system instead of by the measurement device A hardware...

Page 19: ...de 9 high speed samples signals at the fastest rate but has the highest level of noise and does not provide 50 60 Hz power line filtering The noise and digital filter bandwidth change incrementally fo...

Page 20: ...e the channels in use evenly across the five ADCs The module samples the channels in the order NI DAQmx requests and are dependent on the ADC to which the channel belongs Inside the module the request...

Page 21: ...Sequence AI9 AI2 AI7 AI3 AI16 AI1 ADC0 Scanlist Conversion Sequence Channels in Task ADC1 Scanlist ADC2 Scanlist AI5 AI0 AI10 AI16 AI1 AI11 AI2 AI7 AI5 AI2 AI16 AI0 AI7 AI1 AI11 AI10 1 Sample Sample...

Page 22: ...u can calculate the maximum sample rate using the following equation Note Table 2 3 shows the distribution of channels sampled by each ADC AI0 AI1 AI2 AI3 AI4 AI5 ADC0 Scanlist Conversion Sequence Cha...

Page 23: ...ck Measurement Automation Explorer MAX allows you to see the accessories connected to your device In MAX expand Devices and Interfaces and locate your device If a terminal block is connected to your d...

Page 24: ...odules using PXIe_CLK100 along with those using PXI_CLK10 The PXI Express backplane is responsible for generating PXIe_SYNC100 independently to each peripheral slot in a PXI Express chassis For more i...

Page 25: ...of a PXI system but the system will not be able to use the Star Trigger feature PXIe_DSTAR A C PXI Express devices can provide high quality and high frequency point to point connections between each s...

Page 26: ...rest of the circuit The value of N depends on the filter setting Refer to Table 3 2 The filter setting for each input can be configured independently At power on the filters are disabled Enabling filt...

Page 27: ...akes DMA the fastest available data transfer method NI uses DMA hardware and software technology to achieve high throughput rates and increase system utilization DMA is the default method of data tran...

Page 28: ...ay renew to continue your benefits For information about other technical support options in your area visit ni com services or contact your local office at ni com contact Training and Certification Vi...

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