Product Introduction
The NI PXI-6259 is a high-performance M Series multifunction data acquisition (DAQ) module designed for automated testing, laboratory measurement, design validation, industrial data acquisition, and research applications.
The PXI-6259 combines 32 analog input channels, 16-bit resolution, sampling rates up to 1.25 MS/s, 4 analog output channels, 48 digital I/O lines, and two 32-bit counter/timers within a single PXI module.
By integrating analog input, analog output, digital I/O, counter/timer functions, and hardware triggering into one device, the PXI-6259 provides a flexible solution for mixed-signal measurement and control applications.
Product Overview
The National Instruments PXI-6259 belongs to the NI M Series multifunction DAQ family. It is designed for applications requiring a combination of analog measurements, waveform generation, digital control, and timing functions within a modular PXI test system.
The analog input subsystem provides up to 32 single-ended or 16 differential channels with 16-bit resolution. A maximum sampling rate of 1.25 MS/s is available for single-channel acquisition, while multichannel acquisition operates at a lower aggregate rate.
In addition to analog acquisition, the PXI-6259 provides four analog outputs, 48 digital I/O lines, correlated digital I/O capability, two general-purpose counter/timers, and flexible hardware triggering.
Key Features
32 Analog Input Channels
The PXI-6259 provides a high analog input channel count for multi-signal measurement applications.
- 32 single-ended analog inputs
- 16 differential analog inputs
- 16-bit resolution
- Multiplexed analog acquisition
- Programmable input ranges
- DC-coupled voltage measurements
Advantage: A single PXI-6259 can acquire a large number of analog signals, reducing the number of DAQ modules required in multi-channel test systems.
16-Bit Analog Input Resolution
The PXI-6259 provides 16-bit analog-to-digital conversion for general-purpose measurement and automated testing.
- 16-bit ADC resolution
- Accurate voltage acquisition
- Multiple programmable ranges
- Laboratory measurement capability
- Production test applications
Up to 1.25 MS/s Sampling Rate
The analog input subsystem provides high-speed acquisition for dynamic signals and automated measurements.
- Up to 1.25 MS/s maximum single-channel sampling
- Up to 1.00 MS/s aggregate multichannel sampling
- Hardware-timed acquisition
- Continuous data acquisition
- High-speed voltage measurement
Advantage: The sampling performance makes the PXI-6259 suitable for applications requiring significantly faster acquisition than basic static or low-speed DAQ devices.
4 Analog Output Channels
The PXI-6259 provides four analog output channels for generating programmable voltage signals.
- 4 analog output channels
- 16-bit output resolution
- Programmable voltage generation
- Waveform output
- DUT stimulus generation
- Closed-loop measurement applications
Advantage: Integrated analog outputs allow engineers to generate stimulus signals and acquire DUT responses using the same multifunction module.
48 Digital I/O Lines
The PXI-6259 provides extensive digital I/O resources for test fixture control and digital signal monitoring.
- 48 digital I/O lines
- Digital input operation
- Digital output operation
- Correlated digital I/O
- Hardware-timed digital operations
- Test fixture control
Advantage: The large digital I/O count makes the module suitable for automated systems requiring relay control, logic monitoring, device control, and digital sequencing.
Correlated Digital I/O
The PXI-6259 supports hardware-timed correlated digital I/O for synchronized mixed-signal applications.
- Hardware-timed digital acquisition
- Hardware-timed digital generation
- Digital waveform operations
- Analog and digital synchronization
Advantage: Correlated digital I/O allows digital events to be synchronized with analog measurements and other hardware-timed operations.
Two 32-Bit Counter/Timers
The PXI-6259 includes two general-purpose 32-bit counter/timers for timing and pulse measurements.
- 2 × 32-bit counters
- Frequency measurement
- Period measurement
- Pulse-width measurement
- Event counting
- Pulse generation
- Encoder measurements
Advantage: Integrated counters provide timing and measurement capabilities without requiring a separate counter/timer module.
Analog and Digital Triggering
The PXI-6259 supports hardware triggering for synchronized and event-driven acquisition.
- Analog triggering
- Digital triggering
- Start triggers
- Reference triggers
- Event-based acquisition
- PXI system synchronization
PXI Platform Integration
The PXI-6259 is designed for modular PXI measurement and automated test systems.
- PXI form factor
- Modular instrumentation integration
- PXI trigger resources
- Multi-instrument synchronization
- Automated test system integration
Advantage: Engineers can combine the PXI-6259 with PXI oscilloscopes, switches, digital instruments, controllers, and other measurement modules to build complete automated test systems.
NI-DAQmx Software Support
The PXI-6259 is supported by the NI-DAQmx driver for hardware configuration, data acquisition, signal generation, triggering, and automated test development.
- NI-DAQmx support
- LabVIEW integration
- NI MAX configuration
- TestStand integration
- C/C++ development
- .NET application development
Technical Specifications
| Parameter | Description |
|---|---|
| Product Type | PXI Multifunction I/O Module |
| Model | NI PXI-6259 |
| Product Family | NI M Series Multifunction DAQ |
| Bus Interface | PXI |
| Analog Inputs | 32 Single-Ended / 16 Differential |
| Analog Input Resolution | 16 Bit |
| Maximum Single-Channel Sample Rate | 1.25 MS/s |
| Maximum Multichannel Sample Rate | 1.00 MS/s Aggregate |
| Input Coupling | DC |
| Analog Outputs | 4 |
| Analog Output Resolution | 16 Bit |
| Digital I/O | 48 Lines |
| Correlated Digital I/O | Supported |
| Counter/Timers | 2 |
| Counter Resolution | 32 Bit |
| Analog Triggering | Supported |
| Digital Triggering | Supported |
| Driver | NI-DAQmx |
| Primary Applications | Data Acquisition, Automated Test, Laboratory Measurement, Design Validation and Manufacturing Test |
Analog Input Capabilities
The PXI-6259 provides a flexible multiplexed analog input architecture for measuring multiple voltage signals.
Engineers can configure up to 32 single-ended channels or 16 differential channels depending on the signal source, noise environment, and measurement requirements.
For single-channel acquisition, the maximum sampling rate is 1.25 MS/s. During multichannel scanning, the maximum aggregate sampling rate is 1.00 MS/s.
This combination of channel count, resolution, and sampling performance makes the PXI-6259 particularly useful for general-purpose automated data acquisition.
Analog Output Capabilities
Four integrated analog output channels provide programmable stimulus generation for devices under test.
- Control voltage generation
- Analog stimulus generation
- Waveform output
- Closed-loop experiments
- Automated functional testing
The combination of analog input and analog output functionality enables the PXI-6259 to both stimulate and measure electronic devices within the same test sequence.
Digital I/O and Counter Functions
The PXI-6259 provides 48 digital I/O lines for device control, logic monitoring, test fixture operation, and hardware-timed digital applications.
Two integrated 32-bit counter/timers support frequency, period, pulse-width, event-counting, encoder, and pulse-generation applications.
Software Ecosystem
The NI PXI-6259 integrates with the NI-DAQmx software ecosystem for measurement, generation, timing, triggering, and automated test development.
- NI-DAQmx: Provides the primary hardware driver and APIs for analog input, analog output, digital I/O, counters, timing, and triggering.
- LabVIEW: Enables graphical development of measurement, monitoring, control, and automated test applications.
- NI MAX: Provides hardware discovery, configuration, self-test, and basic device verification.
- TestStand: Allows PXI-6259 measurements and control operations to be integrated into automated validation and production test sequences.
- C/C++ and .NET: Support custom DAQ applications through NI-DAQmx APIs.
Industries
- Automated Test Equipment
- Electronic Manufacturing
- Industrial Measurement
- Research Laboratories
- Universities and Education
- Design Verification
- Product Validation
- Laboratory Automation
Applications
Automated Functional Testing
The multifunction architecture makes the PXI-6259 suitable for automated electronic functional test systems.
- PCB functional testing
- Electronic device testing
- Mixed-signal validation
- Automated pass/fail testing
- Production test systems
Laboratory Data Acquisition
The PXI-6259 provides multiple measurement and control resources for laboratory experiments.
- Voltage acquisition
- Multi-channel monitoring
- Experiment automation
- Signal generation
- Data logging
Design Verification
Engineers can use the PXI-6259 during prototype development and product validation.
- Prototype characterization
- Electronic design verification
- Signal monitoring
- Hardware debugging
- Performance validation
Manufacturing Test
The PXI architecture and NI-DAQmx software support make the PXI-6259 suitable for automated production environments.
- End-of-line testing
- Functional verification
- Manufacturing quality control
- Automated data collection
- Test fixture integration
Frequency and Pulse Measurements
The integrated counter/timers provide flexible digital timing measurements.
- Frequency measurement
- Period measurement
- Pulse-width measurement
- Event counting
- Pulse generation
- Encoder measurements
Comparison with Similar PXI Multifunction I/O Modules
| Model | Main Difference | Best Application |
|---|---|---|
| NI PXI-6259 | 32 AI, 16-bit resolution, up to 1.25 MS/s single-channel sampling, 4 AO and 48 DIO. | Existing PXI M Series multifunction DAQ systems |
| NI PXIe-6259 | PXI Express version with similar multifunction DAQ capabilities. | PXI Express M Series systems |
| NI PXI-6251 | Lower-channel-count M Series multifunction DAQ with 16 analog inputs and fewer analog output and digital I/O resources. | General-purpose lower-channel-count DAQ |
| NI PXIe-6363 | Newer X Series multifunction DAQ with 32 AI, 4 AO, 48 DIO and higher analog input sampling performance. | New PXI Express multifunction DAQ systems |
Recommended Related Products
| NI PXIe-6363 | Newer X Series multifunction DAQ for applications requiring similar channel counts with improved acquisition performance. |
| NI PXIe-6259 | PXI Express version for existing systems requiring M Series multifunction DAQ functionality. |
| NI PXI-6251 | M Series multifunction DAQ for applications requiring fewer analog input and output channels. |
Why Choose NI PXI-6259?
- 32 single-ended or 16 differential analog inputs
- 16-bit analog input resolution
- Up to 1.25 MS/s single-channel sampling
- Up to 1.00 MS/s aggregate multichannel sampling
- 4 analog output channels
- 48 digital I/O lines
- Correlated digital I/O capability
- 2 × 32-bit counter/timers
- Analog and digital triggering
- NI-DAQmx software support
- PXI modular instrumentation integration
- Suitable for mixed-signal automated testing
- Ideal for maintaining existing NI M Series PXI systems
Frequently Asked Questions
What is the NI PXI-6259?
The NI PXI-6259 is an M Series PXI multifunction data acquisition module that combines analog input, analog output, digital I/O, counter/timer, and hardware triggering functions for automated measurement and control applications.
How many analog inputs does the PXI-6259 have?
The PXI-6259 provides up to 32 single-ended analog inputs or 16 differential analog inputs.
What is the resolution of the PXI-6259?
The PXI-6259 provides 16-bit analog input resolution.
What is the maximum sampling rate of the PXI-6259?
The PXI-6259 supports a maximum analog input sampling rate of 1.25 MS/s for single-channel acquisition. During multichannel acquisition, the maximum aggregate sampling rate is 1.00 MS/s.
How many analog outputs does the PXI-6259 have?
The PXI-6259 provides four analog output channels with 16-bit resolution.
How many digital I/O lines does the PXI-6259 have?
The PXI-6259 provides 48 digital I/O lines and supports correlated digital I/O for hardware-timed digital operations.
How many counters does the PXI-6259 have?
The module provides two 32-bit general-purpose counter/timers for frequency, period, pulse-width, event-counting, pulse-generation, and encoder applications.
Does the PXI-6259 support analog triggering?
Yes. The PXI-6259 supports analog and digital hardware triggering for synchronized and event-driven measurements.
What software supports the PXI-6259?
The PXI-6259 uses the NI-DAQmx driver and can be integrated with LabVIEW, NI MAX, TestStand, and supported C/C++ and .NET development environments.
What is the difference between PXI-6259 and PXIe-6259?
The two models provide closely related M Series multifunction DAQ functionality. The primary difference is the system interface: the PXI-6259 is designed for conventional PXI systems, while the PXIe-6259 uses the PXI Express architecture.
Is the PXI-6259 suitable for replacement in an existing PXI system?
Yes. The PXI-6259 remains relevant for repair, replacement, maintenance, and expansion of installed systems that were originally designed around NI M Series PXI hardware. System compatibility, connector requirements, and software support should be verified before purchasing a replacement module.
What should I use instead of PXI-6259 for a new test system?
For new system designs, a newer X Series multifunction DAQ module such as the NI PXIe-6363 may be more appropriate. The exact replacement should be selected based on required channel count, sampling rate, connector compatibility, chassis architecture, software, and timing requirements.
Conclusion
The NI PXI-6259 Multifunction I/O Module is a versatile M Series DAQ device for automated testing, laboratory measurement, design validation, and industrial data acquisition. With 32 analog inputs, 16-bit resolution, up to 1.25 MS/s single-channel sampling, four analog outputs, 48 digital I/O lines, two 32-bit counter/timers, correlated digital I/O, and hardware triggering, the PXI-6259 provides extensive mixed-signal measurement and control functionality within a single PXI module.
