Product Introduction
The NI PXIe-6349 is a high-channel-count, simultaneous-sampling X Series multifunction data acquisition module designed for automated testing, multichannel waveform acquisition, industrial measurement, and engineering validation. It combines analog input, analog output, digital I/O, counter/timer functions, and advanced triggering within a single PXI Express module.
With 32 differential analog input channels sampling simultaneously at up to 500 kS/s per channel, the PXIe-6349 can capture time-correlated signals without the interchannel delay associated with multiplexed acquisition devices. Its PXI Express interface and advanced hardware timing resources make it suitable for scalable test and measurement systems.
Product Overview
The PXIe-6349 belongs to the NI X Series multifunction I/O family and is optimized for applications requiring a large number of synchronized analog measurements. Each analog input channel uses a dedicated simultaneous-sampling architecture, enabling accurate phase and timing relationships across all 32 channels.
In addition to the analog input subsystem, the PXIe-6349 provides two analog output channels for waveform generation, 24 programmable digital I/O lines for device control, and four 32-bit counters for frequency, pulse, period, and position measurements.
The module supports NI-DAQmx and integrates with LabVIEW, NI MAX, TestStand, and supported text-based programming environments. This software compatibility helps engineers create reliable automated test, data logging, signal analysis, and control applications.
Key Features
32 Simultaneous Analog Inputs for High-Channel-Count Measurement
The PXIe-6349 provides 32 differential analog input channels with simultaneous sampling across all active channels.
- 32 differential analog input channels
- Simultaneous sampling architecture
- Up to 500 kS/s sampling rate per channel
- 16-bit analog input resolution
- DC-coupled signal acquisition
Advantage: Simultaneous acquisition preserves the timing and phase relationships between all channels, making the module suitable for multichannel waveform comparison, transient analysis, and synchronized sensor measurement.
Programmable Input Ranges for Different Signal Levels
The PXIe-6349 supports multiple analog input ranges for measuring signals with different amplitudes.
- ±1 V input range
- ±2 V input range
- ±5 V input range
- ±10 V input range
- High input impedance
Advantage: Programmable ranges allow users to match the acquisition range to the expected signal level, improving effective resolution and measurement flexibility.
Two Analog Outputs for Waveform Generation and Control
The PXIe-6349 includes two analog output channels for generating test signals, simulating sensor outputs, and controlling external devices.
- 2 analog output channels
- 16-bit digital-to-analog conversion
- Up to 900 kS/s with one active channel
- Up to 840 kS/s per channel with two active channels
- ±10 V output range
Advantage: Integrated analog outputs allow engineers to generate stimuli and acquire system responses using the same multifunction module.
24 Programmable Digital I/O Lines
The PXIe-6349 provides digital lines for device control, status monitoring, hardware triggering, and test sequencing.
- 24 programmable digital I/O lines
- Individually configurable input or output direction
- Static digital operation
- Hardware-timed operation on Port 0
- Digital waveform acquisition and generation
Advantage: The integrated digital subsystem reduces the need for separate digital control hardware in mixed-signal automated test systems.
Four Advanced Counter/Timers
The PXIe-6349 includes four independent 32-bit counter/timers for event measurement, pulse generation, frequency analysis, and position measurement.
- Four 32-bit counters
- Edge counting
- Pulse-width and period measurement
- Two-edge separation measurement
- Quadrature encoder measurement
- Pulse and pulse-train generation
Advantage: The counter subsystem supports precise timing, motion feedback, event detection, and hardware-controlled automation tasks.
Advanced Triggering and Synchronization
The PXIe-6349 provides analog and digital triggering resources for deterministic measurement control.
- Analog edge triggering
- Analog edge triggering with hysteresis
- Analog window triggering
- Digital start and reference triggers
- PXI trigger bus support
- PXIe differential star trigger support
Advantage: Flexible triggering enables precise coordination between the PXIe-6349 and other instruments within complex PXI Express systems.
High-Bandwidth PXI Express Integration
The PXIe-6349 uses the PXI Express platform for fast communication with the system controller and synchronized operation with other PXI modules.
- PXI Express bus interface
- DMA-based data transfer
- High-throughput multichannel streaming
- PXI timing and trigger integration
- Scalable modular architecture
Advantage: PXI Express connectivity supports continuous acquisition from many channels while allowing integration with switching, RF, power, and additional measurement modules.
Technical Specifications
| Parameter | Description |
|---|---|
| Product Type | PXI Express Simultaneous-Sampling Multifunction I/O Module |
| DAQ Family | NI X Series |
| Analog Input Channels | 32 Differential Channels |
| Analog Input Resolution | 16 Bits |
| Maximum AI Sample Rate | 500 kS/s per Channel |
| Sampling Architecture | Simultaneous Sampling |
| Analog Input Ranges | ±1 V, ±2 V, ±5 V, and ±10 V |
| Input Coupling | DC |
| Analog Input Bandwidth | 2.0 MHz at ±1 V; 2.9 MHz at Other Ranges |
| Analog Output Channels | 2 Channels |
| Analog Output Resolution | 16 Bits |
| Maximum AO Update Rate | 900 kS/s for One Channel; 840 kS/s per Channel for Two Channels |
| Analog Output Range | ±10 V |
| Digital I/O | 24 Programmable Digital I/O Lines |
| Hardware-Timed Digital Port | 8 Lines on Port 0, Up to 1 MHz |
| Counter/Timers | Four 32-Bit Counter/Timers |
| Analog Triggering | Edge, Edge with Hysteresis, and Window Triggering |
| Bus Interface | PXI Express |
| Driver Support | NI-DAQmx |
| Programming Environments | LabVIEW, C/C++, .NET, Python, and Other Supported APIs |
Software Ecosystem
The PXIe-6349 is supported by the NI software ecosystem for configuration, programming, synchronization, automated testing, and data analysis.
- NI-DAQmx: Provides device configuration, synchronized acquisition, signal generation, triggering, timing, and application programming interfaces.
- LabVIEW: Supports graphical development of measurement, automation, control, and signal-processing applications.
- NI MAX: Enables hardware detection, configuration, self-testing, diagnostics, and calibration management.
- TestStand: Supports automated test sequencing, result processing, report generation, and production deployment.
- Programming APIs: NI-DAQmx can be used with supported C/C++, .NET, Python, and other text-based development environments.
Industries
- Aerospace and Defense
- Automotive and Transportation
- Electronics Manufacturing
- Semiconductor Testing
- Industrial Automation
- Energy and Power Electronics
- Scientific Research
- Academic Laboratories
Applications
High-Channel-Count Synchronized Data Acquisition
The PXIe-6349 is well suited for measurement systems requiring many analog signals to be acquired at the same instant.
- Multichannel sensor acquisition
- Time-correlated waveform recording
- Phase comparison
- Parallel signal monitoring
Automated Electronic Test Systems
The PXIe-6349 combines signal acquisition, waveform generation, digital control, and timing functions for automated validation platforms.
- Functional verification
- Production testing
- Electronic device characterization
- Hardware validation
Industrial Monitoring and Control
The module can acquire signals from industrial sensors while controlling external devices through its analog and digital outputs.
- Machine condition monitoring
- Process measurement
- Equipment diagnostics
- Industrial automation
Automotive and Aerospace Validation
The simultaneous input architecture supports accurate acquisition of multiple time-sensitive signals in transportation and aerospace systems.
- Vehicle subsystem testing
- Control system validation
- Sensor synchronization
- Environmental testing
Research and Laboratory Measurement
The PXIe-6349 provides a flexible platform for scientific experiments and engineering development.
- Experimental event recording
- Prototype validation
- Signal analysis
- Custom instrumentation
Comparison with Similar Products
| Model | Main Difference | Best Application |
|---|---|---|
|
NI PXIe-6349 | Provides 32 simultaneous analog inputs at 500 kS/s per channel, two analog outputs, 24 digital I/O lines, and four counters. | High-channel-count synchronized acquisition |
|
NI PXIe-6358 | Provides 16 simultaneous analog inputs at a higher 1.25 MS/s per-channel sampling rate, along with four analog outputs and 48 digital I/O lines. | Higher-speed mixed-signal testing |
|
NI PXIe-6356 | Provides eight simultaneous analog input channels at 1.25 MS/s per channel in a lower-channel-count configuration. | Compact high-speed simultaneous acquisition |
|
NI PXIe-6368 | Provides multiplexed multifunction acquisition for general-purpose systems that do not require dedicated simultaneous sampling on every channel. | General high-channel-count DAQ applications |
Recommended Related Products
The following products can be combined with the PXIe-6349 to create a complete PXI Express data acquisition and automated test platform.
|
NI PXIe-1092 | Compact PXI Express chassis for modular measurement and automated test systems. |
|
NI PXIe-1095 | High-performance 18-slot PXI Express chassis for large multichannel instrumentation systems. |
|
NI PXIe-8842 | Embedded PXI Express controller for running acquisition, analysis, and automated test applications. |
|
NI BNC-2110 | Shielded BNC connector block for convenient analog, digital, counter, and timing signal access. |
|
NI BNC-2115 | Shielded connector block designed for extended analog input access on compatible PXIe-6349 connectors. |
|
NI SCB-68A | Shielded 68-pin connector block for custom field wiring and signal termination. |
Why Choose PXIe-6349?
- 32 dedicated simultaneous analog input channels
- Up to 500 kS/s acquisition rate on every analog input
- 16-bit analog input and output resolution
- Two waveform-capable analog output channels
- 24 programmable digital I/O lines
- Four 32-bit counters for timing and motion applications
- Programmable ±1 V, ±2 V, ±5 V, and ±10 V input ranges
- Advanced analog and digital triggering
- PXI Express integration for scalable automated test systems
- Supported by NI-DAQmx, LabVIEW, NI MAX, and TestStand
Frequently Asked Questions
Does the PXIe-6349 sample all 32 analog input channels simultaneously?
Yes. The PXIe-6349 provides 32 differential simultaneous-sampling analog input channels. Each channel can acquire at up to 500 kS/s, helping preserve timing and phase relationships between all measured signals.
Can the PXIe-6349 generate analog signals?
Yes. The PXIe-6349 includes two 16-bit analog output channels. The maximum update rate is 900 kS/s when one channel is active and 840 kS/s per channel when both channels are active.
Which accessories are compatible with the PXIe-6349?
Compatible accessories include shielded SHC68-68-EPM and SHC68-68 cables, the SCB-68A, BNC-2110, BNC-2120, BNC-2090A, BNC-2115, CB-68LP, and TBX-68. Cable and connector selection should be based on the PXIe-6349 connector being used.
Conclusion
The NI PXIe-6349 simultaneous-sampling multifunction DAQ module provides a powerful solution for engineers requiring synchronized acquisition across a large number of analog channels.
With 32 simultaneous analog inputs, two analog outputs, 24 digital I/O lines, four counters, advanced triggering, PXI Express connectivity, and comprehensive NI software support, the PXIe-6349 is an excellent choice for automated electronic testing, industrial monitoring, automotive validation, aerospace measurement, and scientific research.
