National Instruments SC Express PXIe-4309 User Manual
32 ch 8 adc, 2 ms/s, 18 - 28 bit, flexible resolution pxi analog input module
Hide thumbs
Also See for SC Express PXIe-4309:
- Calibration procedure (18 pages) ,
- Getting started manual and specifications (26 pages)
Subscribe to Our Youtube Channel
Related Manuals for National Instruments SC Express PXIe-4309
Summary of Contents for National Instruments SC Express PXIe-4309
- Page 1 SC Express PXIe-4309 User Manual 32 Ch (8 ADC), 2 MS/s, 18 - 28 bit, Flexible Resolution PXI Analog Input Module PXIe-4309 User Manual May 2017 377024A-01...
- Page 2 Tel: 866 ASK MYNI (275 6964) NI Services For further support information, refer to the appendix. To comment on National Instruments documentation, refer to the National Instruments website at ni.com/info enter the Info Code feedback © 2017 National Instruments. All rights reserved.
- Page 3 National Instruments Corporation. National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
- Page 4 ™ The ExpressCard word mark and logos are owned by PCMCIA and any use of such marks by National Instruments is under license. The mark LabWindows is used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries.
-
Page 5: Table Of Contents
Using PFI Terminals as Timing Input Signals ..........2-18 Exporting Timing Output Signals Using PFI Terminals ........2-18 Connecting PFI Input Signals................2-19 PFI Filters ......................2-19 I/O Protection ....................2-20 Synchronization ......................2-20 Reference Clock Synchronization ..............2-20 Accessory Auto-Detection..................2-21 © National Instruments | v... - Page 6 Contents Chapter 3 SC Express Considerations SC Express Clock and Trigger Signals................3-1 PXIe_CLK100 ......................3-1 PXI_CLK10 ......................3-1 PXI Triggers ......................3-1 PXI_STAR Trigger....................3-1 PXIe_DSTAR<A..C> ....................3-2 Appendix A NI Services Figures Figure 2-1. Analog Input Circuitry................2-2 Figure 2-2.
-
Page 7: Getting Started
For a complete list of terminal blocks supported by a specific release of Note NI-DAQmx, refer to the NI-DAQmx Readme, available on the version-specific download page or installation media. Module Specifications Refer to the PXIe-4309 Specifications document for module specifications. © National Instruments | 1-1... -
Page 8: Using The Pxie-4309
This icon denotes a caution, which advises you of precautions to take to Caution avoid injury, loss of data, or a system crash. Connecting Voltage Signals The TB-4309 (ST) or TB-4309 (MT) terminal block is available for Note measuring voltage signals. © National Instruments | 2-1... -
Page 9: Analog Input Circuitry
Chapter 2 Using the PXIe-4309 Analog Input Circuitry Figure 2-1. Analog Input Circuitry Multiplexer AI0± Protection Programmable Low-Pass Gain Amplifier Filter Protection AI16± SAR ADC – AI8± Protection Floating Range = ± 15 V Ground AI24± Protection Range = ± 10 V (1 of 8) Range = ±... -
Page 10: Figure 2-3. Recommended Wiring For A Floating Source
Figure 2-3. Recommended Wiring for a Floating Source AIn+ – AIn– TB-4309 (ST) PXIe-4309 Grounded Shielding Enclosure Figure 2-4. Recommended Wiring for a Grounded Source with Common-Mode AIn+ – AIn– TB-4309 (ST) PXIe-4309 Grounded Shielding Enclosure © National Instruments | 2-3... -
Page 11: Module Pinout
Chapter 2 Using the PXIe-4309 Figure 2-5. Recommended Wiring for a Grounded Source AIn+ – AIn– TB-4309 (ST) PXIe-4309 Grounded Shielding Enclosure Module Pinout I/O Connector Table 2-1 shows the pinout of the front connector of the PXIe-4309. Refer to the Signal Descriptions section for definitions of each signal. -
Page 12: Table 2-1. Pxie-4309 Front Connector Signal Pin Assignments
AI30- AI30+ AI23+ AI7+ AI15+ AI23- AI7- AI15- AI31- AI31+ AI19+ AI3+ AI11+ AI19- AI3- AI11- AI27- AI27+ PFI GND PFI0 PFI1 RSVD RSVD RSVD RSVD is reserved NC is no connection RSVD RSVD RSVD © National Instruments | 2-5... -
Page 13: I/O Connector Signal Descriptions
Chapter 2 Using the PXIe-4309 I/O Connector Signal Descriptions Table 2-2 describes the signals found on the I/O connector. Table 2-2. I/O Connector Signal Descriptions Signal Names Direction Description — Ground AI<0..31>+ Input Positive inputs of the differential analog input channels 0 to 31. -
Page 14: Pxie-4309 Block Diagram
Channels 5, 13, 21, 29 Channels 6, 14, 22, 30 Channels 7, 15, 23, 31 Floating Circuitry REF± Protection Reference Clocking, Triggering Averaging, Auto Zero Floating Ground PXIe Bus Interface PFI0 Protection PFI1 PFI GND © National Instruments | 2-7... -
Page 15: Signal Acquisition Considerations
Chapter 2 Using the PXIe-4309 Signal Acquisition Considerations This section contains information about signal acquisition concepts, including operation modes, SAR converters, timing, triggering, and synchronization. The PXIe-4309 has eight simultaneously sampled 18-bit 2 MS/s successive approximation (SAR) ADCs. SAR involves a binary search through all possible quantization levels before finally converging upon a digital output for each conversion. -
Page 16: Sample Modes
The PXIe-4309 supports averaging in hardware. Based on the sample rate, the PXIe-4309 will average as many converts per sample as possible to deliver the best resolution for a given sample rate. Refer to the PXIe-4309 Specifications for Noise versus Sample Rate information. © National Instruments | 2-9... -
Page 17: Figure 2-7. Single Channel Averaging
Chapter 2 Using the PXIe-4309 Figure 2-7 depicts an averaging acquisition of two samples of a single channel. Figure 2-7. Single Channel Averaging Convert Clock Sample Clock Sample Time Stamp Samples are timestamped to the time when the sample clock takes place, but Note are acquired throughout the sample period. -
Page 18: Single Convert Acquisition
Table 2-5 shows the max sampling rate based on the maximum number of channels per ADC. Table 2-5. Maximum Sample Rate (Hardware-Timed Single Point, On-Demand, and External Sample Clock) Maximum Channels per ADC Maximum Sample Rate Aggregate Rate 900 kHz 900 kHz 180 kHz 360 kHz 120 kHz 90 kHz © National Instruments | 2-11... -
Page 19: Sample Timing Modes
Chapter 2 Using the PXIe-4309 Sample Timing Modes The PXIe-4309 supports four timing modes that fall into two categories: software-timed and hardware-timed. Software-timed, hardware timed single point (HWTSP), and external sample Note Single Convert clock use single sample acquisition to minimize latency. Refer to the Acquisition section for more information. -
Page 20: Offset Error Cancellation Techniques
Range = ± 0.1 V Short Floating Circuitry (1 of 8) Use the DAQmx Channel Property Node (Analog Input»General Properties»Advanced» High Accuracy Settings»Auto Zero Mode) to configure Auto Zero behavior as none, once, or every sample. © National Instruments | 2-13... - Page 21 Chapter 2 Using the PXIe-4309 To read the offset error add to the acquisition Note _aignd_vs_aignd<0..7> task, where each channel index represents the ADC index. The offset error can only be read with Auto Zero set to none. For a single PXIe-4309 module, the Auto Zero setting must be consistent Note across all channels for a given task;...
-
Page 22: Chopping
Using these measurements it is possible to cancel out the offset error of the signal conditioning path. 0.5 x (V ) = 0.5 x ([V ] - [-V ]) = 0.5 x 2 V AI16 © National Instruments | 2-15... -
Page 23: Table 2-7. Ai Channel Connection Pairing For Chopping Channels
Chapter 2 Using the PXIe-4309 The PXIe-4309 performs these mathematical operations in hardware when chopping is enabled. Refer to the PXIe-4309 Specifications for performance specifications of Chopping. Table 2-7 shows the AI channel connections that are paired to create a chopping channel. Table 2-7. -
Page 24: Timing And Triggering
Each PFI can be individually configured as the following: • A timing input signal for AI. • A timing output signal from AI. Each PFI input has a programmable debouncing filter. © National Instruments | 2-17... -
Page 25: Using Pfi Terminals As Timing Input Signals
Chapter 2 Using the PXIe-4309 Figure 2-13 shows the PFI circuitry. Figure 2-13. PFI Circuitry Output Enable Timing Signals PFIx Protection Input Timing 10 kΩ Signal Selectors Debouncing PFI GND Filters PFI Circuitry (1 of 2) On the I/O connector, each terminal is labeled PFIx. Refer to the PXIe-4309 Specifications for the PFI input and output specifications. -
Page 26: Connecting Pfi Input Signals
100 MHz 5.12 µs 5.11 µs (medium) (N - 1) Custom 100 MHz ---------------------- ---------------------- 100 MHz 100 MHz The filter setting for each input can be configured independently. Filters are disabled on power up. © National Instruments | 2-19... -
Page 27: I/O Protection
Chapter 2 Using the PXIe-4309 I/O Protection Each PFI signal is protected against overvoltage, undervoltage, and overcurrent conditions as well as ESD events; however, avoid these fault conditions by following these guidelines: When using PFI lines as an output, do not connect them to any external signal source, •... -
Page 28: Accessory Auto-Detection
Unsupported terminal blocks appear in 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 about programmatically accessing accessory status. © National Instruments | 2-21... -
Page 29: Sc Express Considerations
A system timing controller can be installed in the system timing slot to provide trigger signals to other peripheral modules. Systems that do not require this functionality can install any standard peripheral module in this system timing slot. © National Instruments | 3-1... -
Page 30: Pxie_Dstar
Chapter 3 SC Express Considerations An SC Express module receives the Star Trigger signal (PXI_STAR) from a System timing controller. PXI_STAR can be used as a trigger signal for input operations. An SC Express module is not a System timing controller. An SC Express module can be used in the system timing slot of a PXI system, but the system will not be able to use the Star Trigger feature. -
Page 31: Ni Services
System Integration—If you have time constraints, limited in-house technical resources, or • other project challenges, National Instruments Alliance Partner members can help. To learn more, call your local NI office or visit ni.com/alliance © National Instruments | A-1... - Page 32 Appendix A NI Services Training and Certification—The NI training and certification program is the most • effective way to increase application development proficiency and productivity. Visit for more information. ni.com/training – The Skills Guide assists you in identifying the proficiency requirements of your current application and gives you options for obtaining those skills consistent with your time and budget constraints and personal learning preferences.
Need help?
Do you have a question about the SC Express PXIe-4309 and is the answer not in the manual?
Questions and answers