Related Manuals for National Instruments SC Express PXIe-4357
Summary of Contents for National Instruments SC Express PXIe-4357
- Page 1 NI SC Express NI PXIe-4357 User Manual Subtitle NI PXIe-4357 User Manual March 2012 373440A-01...
- Page 2 For further support information, refer to the Technical Support and Professional Services appendix. To comment on National Instruments documentation, refer to the National Instruments Web site at ni.com/info and enter the Info Code feedback. © 2012 National Instruments Corporation. All rights reserved.
- Page 3 Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control.
- Page 4 DEATH, THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT 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 A USER OR APPLICATION DESIGNER MAY USE NATIONAL...
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Page 5: Table Of Contents
NI PXIe-4357 Measurement Circuitry ..............2-9 NI PXIe-4357 Block Diagram.................. 2-10 Sample Rates ......................2-10 Hardware and Software Timing ............... 2-10 ADC Timing Modes ..................2-11 Channel Ordering ..................... 2-12 Computing Aggregate Sample Rates..............2-14 Accessory Auto-Detection....................2-15 © National Instruments Corporation | v... - Page 6 Contents Chapter 3 PXI Express Considerations NI SC Express Clock and Trigger Signals................ 3-1 PXIe_CLK100 ......................3-1 PXIe_SYNC100......................3-1 PXI_CLK10 ......................3-1 PXI Triggers ......................3-1 PXI_STAR Trigger....................3-2 PXIe_DSTAR<A..C> ....................3-2 Trigger Filters ......................3-3 Data Transfer Methods ..................... 3-4 Appendix A Technical Support and Professional Services Figures...
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Page 7: Getting Started
Module and Terminal Block Specifications Refer to the NI PXIe-4357 Specifications document for module specifications. Refer to the NI PXIe-4357 and TB-4357 Installation Guide and Terminal Block Specifications document for the terminal block specifications. © National Instruments Corporation | 1-1... -
Page 8: Module Accessories And Cables
Chapter 1 Getting Started Module Accessories and Cables Refer to the NI 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 information about calibration services for the NI PXIe-4357 at ni.com/calibration 1-2 | ni.com... -
Page 9: Using The Ni Pxie-4357
Refer to Figure 2-1 for an example of the RTD wiring for one channel of the NI PXIe-4357. Connect EX– on a channel by channel basis. Each EX– line is star routed to Note a common return to maintain the best possible accuracy. © National Instruments Corporation | 2-1... -
Page 10: Grounding And Shielding Considerations
Chapter 2 Using the NI PXIe-4357 Figure 2-1. Input Circuit and RTD Wiring Diagram for One NI PXIe-4357 Channel AI– EX– EX+/– connection for 2-, 3- and 4-wire AI+ sense wire for 4-wire AI– sense wire for 3- and 4-wire Grounding and Shielding Considerations To ensure the specified EMC performance, operate this product only with Caution... -
Page 11: Module Pinout
Table 2-1 illustrates the pinout of the front connector on the NI PXIe-4357. Refer to the Signal Descriptions 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. © National Instruments Corporation | 2-3... -
Page 12: Table 2-1. Front Connector Pin Assignments
Chapter 2 Using the NI PXIe-4357 Table 2-1. Front Connector Pin Assignments Front Connector Diagram Pin Number Column A Column B Column C — AI0+ AI5+ Column EX0+ AI0– AI5– EX0– EX5– EX5+ RSVD AI10+ AI15+ EX10+ AI10– AI15– EX10– EX15–... -
Page 13: Signal Descriptions
AI<0..19> in software regardless of the wiring configuration. Measuring Temperature with RTD Sensors This section explains how to take an RTD temperature measurement using the NI PXIe-4357 and National Instruments software. For an introduction to temperature measurements, refer to and enter ni.com/info... -
Page 14: Temperature Accuracy Considerations
Chapter 2 Using the NI PXIe-4357 Temperature Accuracy Considerations Temperature measurement errors depend on the RTD type, accuracy of the RTD, temperature being measured, accuracy of the measurement module, and wiring configuration used to connect the RTD to the module. The NI PXIe-4357 supports 2-, 3-, and 4-wire measurement connections. -
Page 15: Measuring Temperature With The Daq Assistant
Within LabVIEW, LabWindows/CVI, Measurement Studio, or LabVIEW Note Signal Express, you can also access the DAQ Assistant. Refer to the NI-DAQmx Help, which is installed by default at Start»All Programs»National Instruments» NI-DAQ, for additional information. Select Acquire Signals»Analog Input»Temperature»RTD. Select a physical channel for the NI PXIe-4357 and click Next. The physical channel is the terminal at which you measure an analog signal. -
Page 16: Measuring Temperature With Labview Or Labwindows/Cvi
Chapter 2 Using the NI PXIe-4357 Measuring Temperature with LabVIEW or LabWindows/CVI The following procedure assumes you have already installed NI-DAQmx and connected the RTD sensors to your device. Refer to the Connecting Signals section as well as the NI PXIe-4357 and TB-4357 Installation Guide and Terminal Block Specifications document for pinouts and additional signal connection content. -
Page 17: Ni Pxie-4357 Features
Figure 2-3 shows the measurement circuitry on the NI PXIe-4357. Figure 2-3. NI PXIe-4357 Measurement Circuitry Diagram 2-, 3-wire 4-wire 4-wire AI– 3-wire 3-wire Compensation EX– 2-wire Configuration muxes to select 2-, 3- or 4-wire measurements © National Instruments Corporation | 2-9... -
Page 18: Ni Pxie-4357 Block Diagram
Chapter 2 Using the NI PXIe-4357 NI PXIe-4357 Block Diagram Figure 2-4 shows the NI PXIe-4357 block diagram. Figure 2-4. NI PXIe-4357 Block Diagram Accessory Multiplexer ADC0 AI10 AI15 Multiplexer ADC1 AI11 AI16 PXIe Digital Isolators Interface Multiplexer FPGA ADC2 AI12 AI17 Multiplexer... -
Page 19: Adc Timing Modes
A scanlist is an ordered list of channels to be sampled. The skew between channels is based on how long it takes the ADC to convert signals. Timing mode 9 has the least amount of skew between channels. © National Instruments Corporation | 2-11... -
Page 20: Channel Ordering
Chapter 2 Using the NI PXIe-4357 You can choose to select an ADC timing mode independent of the requested sample rate using the ADC Timing Mode property. This allows sampling of all channels at a faster rate within a shorter window after the sample clock. Refer to Table 2-4 for a quick reference about the ADC timing mode that NI-DAQmx selects based on the number of channels per ADC and the selected sample rate. -
Page 21: Figure 2-5. Non-Sequential Channel Conversion Sequence
Conversion Sequence ADC0 Sample Sample Sample Scanlist AI10 AI10 ADC1 Scanlist Channels AI16 in Task AI16 AI11 AI11 ADC2 Scanlist AI16 AI19 ADC3 AI13 Scanlist AI11 AI10 AI13 AI13 ADC4 Scanlist AI19 AI19 Time © National Instruments Corporation | 2-13... -
Page 22: Computing Aggregate Sample Rates
Chapter 2 Using the NI PXIe-4357 Figure 2-6. Typical Channel Conversion Sequence Conversion Sequence ADC0 Sample Sample Sample Scanlist AI10 AI10 ADC1 Scanlist Channels in Task AI11 AI11 ADC2 Scanlist ADC3 Scanlist AI10 AI11 ADC4 Scanlist Time Computing Aggregate Sample Rates The sample rate is dependent on the number of channels on each ADC. -
Page 23: Accessory Auto-Detection
MAX with an X next to them. NI-DAQmx property nodes can be used to programmatically access information about connected accessories in your application. Refer to the NI-DAQmx Help for documentation on programmatically accessing accessory status. Select Start»All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. © National Instruments Corporation | 2-15... -
Page 24: Pxi Express Considerations
Triggers can be used to synchronize the operation of several different PXI peripheral modules. On SC Express modules, the eight PXI trigger signals are synonymous with RTSI <0..7>. © National Instruments Corporation | 3-1... -
Page 25: Pxi_Star Trigger
Chapter 3 PXI Express Considerations Notice that in a PXI chassis with more than eight slots, the PXI trigger lines may be divided into multiple independent buses. Refer to the documentation for your chassis for details. PXI_STAR Trigger In a PXI Express system, the Star Trigger bus implements a dedicated trigger line between the system timing slot and the other peripheral slots. -
Page 26: Trigger Filters
These filters work by rejecting any pulse shorter than the specified filter setting. For example, a 5.12 μs filter will reject any pulses shorter than 5.12 μs. The trigger filters can be used to prevent false triggers from occurring in cases where the trigger signal is noisy or glitchy. © National Instruments Corporation | 3-3... -
Page 27: Data Transfer Methods
Chapter 3 PXI Express Considerations Data Transfer Methods The primary ways to transfer data across the PXI Express bus are as follows: • Direct Memory Access (DMA)—DMA is a method to transfer data between the device and computer memory without the involvement of the CPU. This method makes DMA the fastest available data transfer method. -
Page 28: Technical Support And Professional Services
Technical Support and Professional Services Visit the following sections of the award-winning National Instruments Web site at ni.com for technical support and professional services: • Support—Technical support at includes the following resources: ni.com/support – Self-Help Technical Resources—For answers and solutions, visit ni.com/...