Product Introduction
The NI PCI-6255 is a high-performance M Series multifunction data acquisition (DAQ) device designed for automated test, industrial measurement, sensor acquisition, research applications, and laboratory automation. It combines high-channel-count analog input, analog output, digital I/O, and counter/timer functionality on a single PCI interface board.
Featuring up to 80 analog input channels, 16-bit ADC resolution, 1.25 MS/s maximum sampling rate, 2 analog output channels, 24 digital I/O lines, and two 32-bit counter/timers, the PCI-6255 provides a flexible and scalable solution for complex measurement and control systems.
Product Overview
The NI PCI-6255 belongs to the NI M Series multifunction DAQ family and is designed for applications requiring a large number of analog measurement channels combined with reliable timing and synchronization capabilities.
Compared with lower-channel DAQ devices, the PCI-6255 provides a significantly higher analog input density, making it suitable for systems that need to monitor many sensors, test points, or distributed signals simultaneously.
The multifunction architecture integrates analog acquisition, analog generation, digital control, and hardware timing into one PCI board, reducing system complexity and improving integration efficiency.
Key Features
80 Analog Input Channels
The PCI-6255 provides high-density analog input capability for multi-channel measurement applications.
- 80 single-ended analog input channels
- 40 differential analog input channels
- Multi-sensor acquisition
- Large-scale data logging
- Automated test measurements
Advantage: The large number of analog input channels allows engineers to measure many signals using a single DAQ device, reducing hardware requirements in complex test systems.
16-Bit Analog Input Resolution
The PCI-6255 provides 16-bit analog-to-digital conversion for accurate general-purpose measurement applications.
- 16-bit ADC resolution
- High-quality signal digitization
- Voltage measurement
- Sensor monitoring
- Electronic testing
Advantage: Provides a balance between measurement accuracy, channel density, and acquisition performance for a wide range of applications.
1.25 MS/s Analog Input Sampling Rate
The PCI-6255 supports high-speed analog acquisition for dynamic signals and multi-channel measurements.
- Up to 1.25 MS/s aggregate sampling rate
- Hardware-timed acquisition
- Continuous measurement
- Waveform recording
- Dynamic signal monitoring
Advantage: Enables engineers to capture changing signals while maintaining high channel-count measurement capability.
Multiplexed Analog Input Architecture
The PCI-6255 uses a multiplexed analog input architecture to provide many measurement channels through shared ADC resources.
- Multi-channel scanning
- Flexible acquisition sequences
- Efficient ADC utilization
- High channel density
Advantage: Allows a large number of analog inputs while maintaining cost-effective system design.
Programmable Input Ranges
The PCI-6255 supports software-selectable analog input ranges for different signal levels.
- Multiple voltage ranges
- Signal optimization
- Sensor compatibility
- Flexible measurement configuration
Advantage: Engineers can configure the DAQ device according to different sensor outputs and measurement requirements.
2 Analog Output Channels
The PCI-6255 provides two analog output channels for programmable voltage generation.
- 2 analog output channels
- 16-bit DAC resolution
- Voltage stimulus generation
- Control signal generation
- Automated test excitation
Advantage: Allows measurement and stimulus generation within the same DAQ platform.
24 Digital I/O Lines
The PCI-6255 includes digital I/O resources for external device control and monitoring.
- 24 digital I/O lines
- Digital input monitoring
- Digital output control
- Relay and fixture control
- Industrial device interfacing
Advantage: Digital functions can be combined with analog measurement tasks for complete automated test solutions.
Two 32-Bit Counter/Timers
The PCI-6255 includes two hardware counter/timer channels for precise timing operations.
- Event counting
- Frequency measurement
- Pulse generation
- Pulse-width measurement
- Encoder applications
Advantage: Hardware counters provide accurate timing measurements without relying on software timing.
Analog and Digital Triggering
The PCI-6255 supports hardware triggering for synchronized acquisition and generation tasks.
- Analog triggering
- Digital triggering
- Hardware synchronization
- External event triggering
- Automated measurement sequences
Advantage: Enables repeatable and synchronized test operations.
PCI Interface
The PCI-6255 connects directly to compatible desktop and industrial computers through a standard PCI interface.
- PCI bus interface
- Industrial PC integration
- Desktop measurement systems
- Automated test stations
Advantage: Provides a reliable solution for existing PCI-based DAQ and automation systems.
NI-DAQmx Software Support
The PCI-6255 is supported by NI-DAQmx for configuration, programming, measurement, and automation development.
- NI-DAQmx driver
- LabVIEW integration
- NI MAX configuration
- TestStand support
- C/C++ and .NET development
Advantage: Provides a complete software environment for developing customized DAQ applications.
Technical Specifications
| Parameter | Description |
|---|---|
| Product Type | PCI M Series Multifunction DAQ Device |
| Analog Input Channels | 80 Single-Ended / 40 Differential |
| Analog Input Resolution | 16-bit |
| Maximum Analog Input Rate | 1.25 MS/s |
| Analog Output Channels | 2 |
| Analog Output Resolution | 16-bit |
| Digital I/O | 24 Lines |
| Counter/Timers | 2 × 32-bit |
| Triggering | Analog and Digital Triggering |
| Host Interface | PCI |
| DAQ Family | NI M Series |
| Driver | NI-DAQmx |
| Primary Applications | High-Channel Data Acquisition, Automated Test, Industrial Monitoring and Sensor Measurement |
Software Ecosystem
The NI PCI-6255 integrates with NI software platforms for measurement, automation, analysis, and control applications.
- NI-DAQmx: Provides hardware drivers and APIs for analog input, analog output, digital I/O, counters, triggering, and timing.
- LabVIEW: Enables graphical development of measurement, control, data logging, and automated testing applications.
- NI MAX: Provides device configuration, diagnostics, self-test, and hardware verification.
- TestStand: Allows PCI-6255 functions to be integrated into production and validation test systems.
Industries
- Automated Test Equipment
- Electronic Manufacturing
- Industrial Automation
- Automotive Testing
- Aerospace and Defense
- Research Laboratories
- Scientific Measurement
- Embedded System Development
Applications
High-Channel Sensor Measurement
The PCI-6255 is ideal for applications requiring simultaneous monitoring of many analog signals.
- Multi-sensor monitoring
- Temperature acquisition
- Pressure measurement
- Industrial signal monitoring
Automated Test Systems
The multifunction capability allows engineers to build complete automated test systems using one DAQ device.
- Functional testing
- Production testing
- Device characterization
- Electronic validation
Industrial Data Logging
The high channel count makes the PCI-6255 suitable for long-term monitoring applications.
- Machine monitoring
- Process measurement
- Equipment diagnostics
- Data recording
Laboratory Research
The PCI-6255 provides flexible acquisition and generation capabilities for experimental systems.
- Research experiments
- Prototype evaluation
- Automated measurements
- Signal analysis
Control and Automation
The combination of analog, digital, and timing resources supports industrial control applications.
- Digital device control
- Relay control
- System monitoring
- Automated equipment control
Comparison with Similar Multifunction DAQ Devices
| Model | Main Difference | Best Application |
|---|---|---|
| NI PCI-6255 | High-channel M Series DAQ with 80 AI channels, 16-bit resolution, and 1.25 MS/s acquisition. | Large-scale PCI data acquisition |
| NI PCI-6251 | General-purpose M Series DAQ with fewer channels and balanced performance. | General automated measurement |
| NI PCI-6225 | High-channel M Series DAQ focused on cost-effective measurement applications. | High-density general measurement |
| NI PCIe-6363 | PCI Express X Series DAQ providing higher-speed acquisition and advanced timing. | High-performance desktop DAQ |
Recommended Related Products
| NI PCI-6225 | High-channel M Series DAQ for cost-effective multi-point measurement systems. |
| NI PCI-6251 | Balanced M Series multifunction DAQ for general automated test and measurement. |
| NI PCIe-6363 | High-performance PCI Express DAQ for applications requiring faster acquisition and advanced timing. |
| NI USB-6255 | USB-based high-channel M Series DAQ for portable and laboratory measurement systems. |
Why Choose PCI-6255?
- 80 analog input channels
- 16-bit ADC resolution
- 1.25 MS/s analog input sampling
- 2 analog output channels
- 24 digital I/O lines
- Two 32-bit counter/timers
- Analog and digital triggering
- PCI computer interface
- NI-DAQmx software support
- Ideal for high-channel measurement systems
- Suitable for automated testing
- Excellent for industrial data acquisition
Frequently Asked Questions
What is the NI PCI-6255?
The NI PCI-6255 is a high-channel M Series multifunction PCI DAQ device designed for analog measurement, analog output, digital control, and automated testing applications.
How many analog inputs does PCI-6255 provide?
The PCI-6255 provides up to 80 single-ended analog inputs or 40 differential analog inputs.
What is the resolution of PCI-6255?
The PCI-6255 provides 16-bit analog input resolution.
What is the maximum sampling rate of PCI-6255?
The PCI-6255 supports analog input sampling rates up to 1.25 MS/s.
Does PCI-6255 have analog outputs?
Yes. The PCI-6255 includes two analog output channels for programmable voltage generation and stimulus applications.
How many digital I/O lines does PCI-6255 have?
The PCI-6255 provides 24 digital I/O lines.
What software supports PCI-6255?
The PCI-6255 is supported by NI-DAQmx and integrates with LabVIEW, NI MAX, TestStand, and compatible programming environments.
What is the difference between PCI-6255 and PCI-6225?
Both are high-channel M Series DAQ devices, but the PCI-6255 provides higher acquisition performance with 1.25 MS/s sampling and a 16-bit ADC architecture, while the PCI-6225 focuses on cost-effective general measurement applications.
Can PCI-6255 be used for sensor measurement?
Yes. With up to 80 analog input channels, the PCI-6255 is suitable for large-scale sensor acquisition and industrial measurement systems.
Is PCI-6255 suitable for automated testing?
Yes. Its combination of analog input, analog output, digital I/O, counters, and NI-DAQmx support makes it suitable for automated test and validation systems.
Conclusion
The NI PCI-6255 M Series multifunction DAQ device provides a high-channel-count PCI-based measurement solution for automated testing, industrial monitoring, sensor acquisition, and laboratory applications. With 80 analog inputs, 16-bit resolution, 1.25 MS/s sampling, two analog outputs, 24 digital I/O lines, counter/timer resources, and NI-DAQmx support, the PCI-6255 is an excellent choice for complex multi-channel data acquisition systems.
