НИ-5732

Product Introduction

Земля НИ-5732 является 80 MS/s, 14-bit, 2-channel digitizer adapter module for FlexRIO designed for high-speed analog acquisition, real-time FPGA processing, waveform analysis, and high-throughput data streaming applications.

The NI-5732 simultaneously samples two analog input channels at up to 80 MS/s per channel. When combined with a compatible PXI FPGA Module or Controller for FlexRIO, it creates a customizable high-speed digitizer capable of performing application-specific processing directly in FPGA hardware.

The module also provides selectable elliptic, Bessel, and bypass hardware filters, making it suitable for automated test, electronic validation, scientific research, transient measurement, custom instrumentation, and real-time signal-processing applications.

Product Overview

Земля National Instruments NI-5732 belongs to the NI FlexRIO digitizer adapter module family.

Unlike a conventional standalone digitizer, the NI-5732 provides the analog acquisition front end and works together with compatible FlexRIO FPGA hardware.

A typical system architecture is:

Analog Signals → NI-5732 → FlexRIO FPGA Module → PXI/PXIe System → Host Application

This architecture allows acquired analog data to be processed in real time before being transferred to the host computer.

Key Features

2 Analog Input Channels

The NI-5732 provides two analog input channels for high-speed waveform acquisition.

The two-channel architecture is useful for applications that require synchronized measurement of related signals, including:

• Dual-channel waveform acquisition
• Signal comparison
• Phase analysis
• Transient measurement
• Electronic validation
• Sensor signal acquisition
• Research instrumentation
• Automated test

80 MS/s Sampling Rate

The NI-5732 provides a maximum sampling rate of 80 MS/s per channel.

With two simultaneously sampled channels, the module can acquire high-speed analog waveforms while preserving the timing relationship between the two input signals.

The aggregate raw sampling capability is:

2 Channels × 80 MS/s = 160 MS/s Aggregate

Simultaneous Sampling

Both NI-5732 analog input channels are sampled simultaneously.

This architecture differs from multiplexed data acquisition hardware, where multiple channels are measured sequentially using a shared ADC.

Simultaneous sampling is particularly useful for:

• Phase measurements
• Channel-to-channel timing analysis
• Transient capture
• Signal correlation
• Dual-sensor measurements
• Event analysis

14-Bit Resolution

The NI-5732 provides 14-bit analog-to-digital conversion.

The combination of 14-bit resolution and 80 MS/s sampling makes the module suitable for applications that require both high-speed acquisition and useful amplitude resolution.

Selectable Hardware Filters

The NI-5732 includes programmable analog filtering options that allow engineers to optimize the signal path according to the application.

Available filter configurations include:

• Elliptic Filter
• Bessel Filter
• Bypass

Elliptic Filter

The elliptic filter provides a relatively sharp frequency-domain transition and is useful when stronger rejection of unwanted out-of-band frequency components is required.

Bessel Filter

The Bessel filter is useful for applications where time-domain waveform characteristics and group-delay behavior are important.

Filter Bypass

The bypass configuration allows the signal to use the wider available analog path without the additional selectable elliptic or Bessel filtering.

Real-Time FPGA Processing

One of the primary advantages of the NI-5732 is its integration with FlexRIO FPGA hardware.

Acquired ADC data can be transferred directly to programmable FPGA logic for deterministic real-time processing.

Potential FPGA functions include:

• Digital filtering
• Custom triggering
• Threshold detection
• Peak detection
• FFT processing
• Signal averaging
• Decimation
• Data reduction
• Event detection
• Custom DSP algorithms

Technical Specifications

How Does the NI-5732 Work?

The NI-5732 functions as the analog acquisition front end of a FlexRIO-based digitizer system.

A simplified signal path is:

Analog Input → Analog Front End → Selectable Hardware Filter → 14-Bit ADC → FlexRIO FPGA → Host

The module digitizes incoming analog signals and transfers the digital samples to the associated FPGA.

The FPGA can then process, analyze, filter, trigger on, or reduce the data before transferring the required information to the host application.

NI-5732 Is Not a Standalone Digitizer

An important purchasing consideration is that the NI-5732 is a FlexRIO adapter module, not a complete standalone PXI digitizer.

A complete measurement system typically requires:

• NI-5732 Модуль адаптера цифрового преобразователя
• Compatible FlexRIO FPGA Module or Controller
• PXI/PXIe chassis when required by the FPGA module
• PXI embedded controller or external host computer
• Compatible NI software
• Application-specific FPGA implementation

Compatibility between the NI-5732, FPGA module, software version, and operating system should be verified before purchasing replacement or used hardware.

FlexRIO Architecture

NI FlexRIO combines application-specific I/O adapter modules with programmable FPGA hardware.

For the NI-5732, the adapter module provides high-speed analog acquisition while the FPGA determines much of the instrument’s processing behavior.

A typical architecture is:

NI-5732 ADC → FPGA Processing → DMA Transfer → Host Application

This provides significantly more customization than a conventional fixed-function digitizer.

Real-Time Signal Processing

High-speed digitizers can generate substantial amounts of raw data.

FlexRIO allows NI-5732 data to be processed directly in FPGA hardware before transmission to the host.

Например:

Raw Samples → FPGA Filter → Event Detection → Data Reduction → Host Transfer

This approach can reduce host processing requirements and PCI/PXIe data-transfer bandwidth when only specific events or processed results need to be retained.

Custom Triggering

The programmable FPGA architecture allows application-specific trigger functions to be created for NI-5732 acquisition data.

Possible trigger architectures include:

• Analog threshold trigger
• Window trigger
• Dual-channel trigger
• Pattern-based event detection
• Time-qualified trigger
• Signal-processing-based trigger
• Application-specific trigger sequences

Digital Signal Processing

NI-5732 samples can be processed directly in FPGA logic using application-specific digital signal-processing algorithms.

Potential implementations include:

• FIR filters
• IIR filters
• FFT processing
• Signal averaging
• Decimation
• Peak detection
• Pulse detection
• Feature extraction
• Signal classification
• Data compression

High-Speed Waveform Acquisition

The NI-5732 is designed for applications requiring high-speed acquisition of analog waveforms.

Its 80 MS/s sampling rate allows engineers to capture rapidly changing signals for subsequent FPGA or host-based analysis.

Potential signal types include:

• Transient waveforms
• Electronic test signals
• Sensor signals
• Pulses
• Research signals
• Communication-related waveforms

Dual-Channel Measurements

The two simultaneously sampled analog channels allow the NI-5732 to measure two related signals while preserving their timing relationship.

Например:

AI0 → Reference Signal
AI1 → DUT Response

The FPGA or host application can then compare amplitude, timing, frequency, phase, or other signal characteristics.

Transient Analysis

Transient signals can contain important information over very short time periods.

The NI-5732’s 80 MS/s sampling architecture allows high-speed events to be captured with substantially greater time resolution than conventional low-speed multifunction DAQ hardware.

Electronic Validation

The NI-5732 can be incorporated into electronic validation systems for acquiring and analyzing analog signals from prototypes, subsystems, and electronic devices.

Типичные применения включают:

• Prototype validation
• Waveform verification
• Transient characterization
• Signal comparison
• Анализ времени
• Electronic subsystem testing

Automated Test Applications

The NI-5732 can be integrated into automated test systems where high-speed analog acquisition and deterministic processing are required.

A typical automated test sequence may include:

1. Initialize the FlexRIO FPGA target.
2. Configure the NI-5732 analog inputs.
3. Select the required gain and hardware filter.
4. Configure acquisition timing.
5. Arm the FPGA trigger.
6. Acquire both analog channels simultaneously.
7. Process the data in FPGA hardware.
8. Transfer required results to the host.
9. Compare results against test limits.
10. Record the test result.

Scientific and Research Applications

FlexRIO hardware is useful for research applications where conventional instruments do not provide the required processing architecture.

Researchers can combine the NI-5732 with FPGA hardware to create application-specific digitizers for experimental measurement and signal-processing systems.

NI-5732 vs NI-5731

The NI-5731 and NI-5732 are both two-channel, 14-bit FlexRIO digitizer adapter modules, but they provide different maximum sampling rates.

NI-5732 vs NI-5733

The NI-5732 and NI-5733 are both two-channel FlexRIO digitizer adapter modules, but the NI-5733 provides higher ADC resolution and a higher maximum sampling rate.

The NI-5733 is generally more appropriate when the application requires higher resolution or a higher sampling rate.

NI-5732 vs NI-5734

The NI-5734 provides higher resolution, a higher sampling rate, and twice the analog input channel count compared with the NI-5732.

NI-5731 vs NI-5732 vs NI-5733 vs NI-5734

This product family allows engineers to select a FlexRIO analog front end according to the required sampling rate, ADC resolution, and channel count.

NI-5732 Replacement

The NI-5732 is a legacy FlexRIO adapter module and is no longer available directly from NI.

NI currently identifies the PXIe-5172 as the suggested replacement.

However, the PXIe-5172 is not a drop-in adapter-module replacement. It is a reconfigurable PXI oscilloscope with a different system architecture.

Before migrating an existing NI-5732 application to the PXIe-5172, verify:

• Analog input requirements
• Channel count
• Sampling rate
• Input bandwidth
• FPGA application architecture
• Existing LabVIEW FPGA code
• Trigger requirements
• Data streaming architecture
• PXIe chassis compatibility
• Software compatibility

Buying a Replacement NI-5732

Existing systems may require the original NI-5732 rather than migration to a newer instrument architecture.

When sourcing a replacement NI-5732, verify:

• Exact model number
• Part number and hardware revision
• Physical condition
• Functional test status
• Compatible FlexRIO FPGA module
• Software version
• Existing FPGA bitfile compatibility
• Required cables and accessories

Compatible FlexRIO FPGA Hardware

The NI-5732 was supported within the legacy FlexRIO adapter-module ecosystem.

Compatible FlexRIO generations included FPGA hardware such as:

• PXI-7951R
• PXI-7952R
• PXI-7953R
• PXI-7954R
• PXIe-7961R
• PXIe-7962R
• PXIe-7965R
• PXIe-7966R
• PXIe-7971R
• PXIe-7972R
• PXIe-7975R
• PXIe-7976R

Compatibility depends on the exact FlexRIO hardware generation and software version, so the complete system configuration should be verified before purchasing replacement hardware.

LabVIEW FPGA Integration

The NI-5732 was designed for use within the LabVIEW FPGA and FlexRIO development environment.

A typical development workflow is:

Configure FlexRIO Target → Configure NI-5732 I/O → Develop FPGA Processing → Compile FPGA Bitfile → Acquire Data → Process / Stream Results

The programmable FPGA architecture allows engineers to customize the behavior of the resulting digitizer according to the application.

Hardware Filter Selection

The appropriate NI-5732 analog filter should be selected according to the characteristics of the signal being measured.

50 Ω Input Considerations

The NI-5732 analog inputs use a 50 Ω input architecture.

When integrating the module into a high-speed measurement system, verify:

• Source impedance
• Cable impedance
• Signal amplitude
• Termination
• Input range
• Frequency content

Proper impedance matching is important for maintaining signal integrity and reducing reflections in high-frequency measurement systems.

System Integration Considerations

Before selecting or replacing an NI-5732, determine:

• Required number of analog channels
• Required sampling rate
• Required ADC resolution
• Signal frequency range
• Input impedance requirements
• AC/DC coupling requirements
• Analog filter requirements
• FPGA processing requirements
• Compatible FlexRIO FPGA module
• PXI/PXIe chassis requirements
• Data streaming requirements
• Software compatibility
• Migration requirements for legacy applications

Troubleshooting NI-5732 Systems

If an NI-5732 system does not acquire data correctly, check the complete FlexRIO hardware and software configuration.

1. Verify that the NI-5732 is correctly connected to the FlexRIO FPGA module.
2. Confirm that the FPGA module is detected by the system.
3. Verify software and driver compatibility.
4. Check the FPGA bitfile.
5. Verify the analog input configuration.
6. Check signal amplitude.
7. Confirm the 50 Ω signal path.
8. Verify AC/DC coupling.
9. Check the selected hardware filter.
10. Verify the sampling clock configuration.
11. Check FPGA trigger logic.
12. Verify DMA and host data transfer.

Industries

• Аэрокосмическая и оборонная промышленность
• Тестирование полупроводников
• Electronic Validation
• Automated Test
• Scientific Research
• Telecommunications
• Electronics Manufacturing
• Industrial Measurement
• Research and Development
• Custom Instrumentation

Applications

High-Speed Analog Acquisition

The NI-5732 provides two simultaneously sampled 14-bit analog input channels operating at up to 80 MS/s per channel.

Waveform Acquisition

High-speed electronic and sensor waveforms can be acquired and transferred directly to programmable FPGA logic for analysis.

Transient Analysis

The 80 MS/s sampling architecture enables detailed acquisition of short-duration analog events and transient signals.

Real-Time FPGA Processing

Acquired samples can be processed directly by compatible FlexRIO FPGA hardware for deterministic filtering, triggering, event detection, and data reduction.

Electronic Validation

The NI-5732 can be incorporated into electronic validation systems for waveform verification, prototype characterization, and subsystem testing.

Automated Test

The module can be used in automated test systems requiring high-speed acquisition combined with customizable FPGA processing.

Custom Instrumentation

The FlexRIO architecture allows engineers to create application-specific digitizers and signal-processing instruments using the NI-5732 analog front end.

Recommended Related Products

Why Choose NI-5732?

• 2 simultaneously sampled analog input channels
• 80 MS/s per channel
• 14-bit ADC resolution
• 50 Ω analog input architecture
• Selectable AC/DC coupling
• Selectable elliptic hardware filter
• Selectable Bessel hardware filter
• Filter bypass mode
• Programmable gain
• FlexRIO FPGA integration
• Real-time signal processing
• Custom triggering capability
• High-speed data streaming
• Suitable for waveform acquisition
• Suitable for transient analysis
• Suitable for automated test
• Suitable for custom instrumentation

Frequently Asked Questions

What is the NI-5732?

The NI-5732 is an 80 MS/s, 14-bit, 2-channel digitizer adapter module for FlexRIO designed for high-speed analog acquisition and FPGA-based real-time processing.

How many analog input channels does NI-5732 have?

The NI-5732 provides two analog input channels.

What is the maximum sampling rate of NI-5732?

The NI-5732 simultaneously samples both analog input channels at up to 80 MS/s per channel.

What is the resolution of NI-5732?

The NI-5732 provides 14-bit ADC resolution.

Does NI-5732 support simultaneous sampling?

Yes. Both NI-5732 analog input channels are sampled simultaneously, allowing the timing relationship between the two signals to be preserved.

What hardware filters does NI-5732 provide?

The NI-5732 provides selectable elliptic, Bessel, and bypass hardware filter configurations.

Does NI-5732 support AC and DC coupling?

Yes. The analog front end provides selectable AC and DC coupling configurations.

What is the NI-5732 input impedance?

The NI-5732 uses a 50 Ω analog input architecture.

Is NI-5732 a standalone digitizer?

No. The NI-5732 is a FlexRIO digitizer adapter module. It must be combined with compatible FlexRIO FPGA hardware to form a complete high-speed digitizer system.

Can NI-5732 perform real-time signal processing?

Yes. When paired with compatible FlexRIO FPGA hardware, acquired data can be processed directly in FPGA logic for filtering, triggering, FFT processing, event detection, data reduction, and other application-specific functions.

Can NI-5732 be used with LabVIEW FPGA?

Yes. The NI-5732 was designed for the FlexRIO and LabVIEW FPGA ecosystem. Software compatibility should be verified carefully when integrating legacy NI-5732 hardware into a modern system.

What is the difference between NI-5732 and NI-5733?

Both provide two simultaneously sampled analog input channels. The NI-5732 provides 14-bit resolution at up to 80 MS/s, while the NI-5733 provides 16-bit resolution at up to 120 MS/s.

What is the difference between NI-5732 and NI-5734?

The NI-5732 provides two 14-bit, 80 MS/s channels, while the NI-5734 provides four 16-bit channels with sampling rates up to 120 MS/s per channel.

Is NI-5732 discontinued?

Yes. NI currently lists the NI-5732 as no longer available. Existing NI-5732 hardware may still be required for maintenance, repair, replacement, and expansion of legacy FlexRIO systems.

What is the replacement for NI-5732?

NI currently identifies the PXIe-5172 as the suggested replacement for the NI-5732. However, the PXIe-5172 uses a different hardware architecture, so application, FPGA, software, channel, bandwidth, and system compatibility should be evaluated before migration.

Can I replace NI-5732 directly with PXIe-5172?

Not necessarily. The NI-5732 is a FlexRIO adapter module, while the PXIe-5172 is a reconfigurable PXI oscilloscope. Existing FPGA code, hardware interfaces, software architecture, chassis requirements, and measurement specifications should be reviewed before migration.

Why is NI-5732 still used if it is discontinued?

Existing automated test, research, and industrial systems may have been designed specifically around the NI-5732 and a particular FlexRIO FPGA configuration. Replacing the original module can therefore be more practical than redesigning and validating the complete test system.

What should I check before purchasing a replacement NI-5732?

Verify the exact model and hardware revision, physical and functional condition, compatible FlexRIO FPGA module, existing FPGA bitfile, NI software version, operating system compatibility, chassis configuration, and required accessories before purchasing.

Заключение

Земля NI-5732 80 MS/s, 14-Bit, 2-Channel Digitizer Adapter Module for FlexRIO provides simultaneous high-speed analog acquisition combined with programmable FPGA processing. Its two-channel architecture, 80 MS/s sampling rate, 14-bit resolution, selectable analog filters, and FlexRIO integration make it suitable for waveform acquisition, transient analysis, electronic validation, automated test, research, high-speed data streaming, and custom instrumentation.

Although the NI-5732 is now a legacy product and is no longer available directly from NI, it remains relevant for maintenance and replacement of existing FlexRIO systems. NI currently recommends the PXIe-5172 as its successor, but system-level compatibility should be evaluated before migrating an existing NI-5732 application.