Product Introduction
Земля NI USB-6225 is a high-channel-count M Series multifunction data acquisition (DAQ) device designed for sensor measurement, industrial monitoring, automated testing, laboratory research, and data logging applications. Its USB interface provides convenient external connectivity while combining analog input, analog output, digital I/O, and counter/timer functionality in a single DAQ platform.
Featuring up to 80 analog input channels, 16-bit analog input resolution, a maximum aggregate sampling rate of 250 kS/s, 2 analog output channels, 24 digital I/O lines, and hardware counter/timer resources, the USB-6225 is particularly suitable for applications requiring a large number of measurement channels without installing an internal PCI DAQ board.
Product Overview
Земля NI USB-6225 belongs to the NI M Series multifunction DAQ family and is optimized for high-channel-count general-purpose measurement.
The device is especially useful when many analog sensors or test points must be acquired at moderate sampling rates. Compared with higher-speed DAQ devices, the USB-6225 emphasizes channel density, multifunction capability, and convenient USB connectivity rather than maximum acquisition bandwidth.
By integrating analog acquisition, analog generation, digital I/O, counters, triggering, and timing into one external DAQ device, the USB-6225 can simplify laboratory and automated measurement system architecture.
Key Features
80 Analog Input Channels
The USB-6225 provides high-density analog input capability for applications involving many measurement points.
- Up to 80 single-ended analog inputs
- Up to 40 differential analog inputs
- Multi-channel sensor acquisition
- Industrial signal monitoring
- Large-scale data logging
Advantage: High analog input density allows engineers to monitor many signals using a single DAQ device, reducing the number of separate acquisition devices required.
16-Bit Analog Input Resolution
The USB-6225 provides 16-bit analog-to-digital conversion for general-purpose voltage and sensor measurement.
- 16-bit ADC resolution
- Voltage measurement
- Sensor signal acquisition
- Electronic testing
- Industrial monitoring
Advantage: Provides a practical balance between measurement resolution, channel density, acquisition performance, and system cost.
Up to 250 kS/s Analog Input Sampling
The USB-6225 supports hardware-timed analog acquisition with an aggregate sampling rate of up to 250 kS/s.
- Up to 250 kS/s aggregate sample rate
- Hardware-timed acquisition
- Continuous data acquisition
- Multi-channel scanning
- Automated data logging
Advantage: Provides sufficient acquisition performance for many temperature, pressure, voltage, position, process, and general sensor measurements.
Multiplexed Analog Input Architecture
The USB-6225 uses a multiplexed analog input architecture in which multiple analog channels share the analog-to-digital conversion subsystem.
- High channel density
- Configurable channel scanning
- Efficient ADC utilization
- Multi-sensor measurement
- Software-controlled acquisition sequences
Advantage: A multiplexed architecture provides a large number of measurement channels without requiring an individual ADC for every input.
2 Analog Output Channels
The USB-6225 includes two analog output channels for programmable voltage generation and control applications.
- 2 analog output channels
- 16-bit analog output resolution
- Programmable voltage generation
- Analog stimulus generation
- Control signal output
Advantage: Allows analog stimulus and measurement functions to be combined within the same DAQ system.
24 Digital I/O Lines
The USB-6225 provides digital I/O resources for monitoring and controlling external hardware.
- 24 digital I/O lines
- Digital input monitoring
- Digital output control
- Test fixture interfacing
- External device control
Advantage: Digital I/O can be used alongside analog measurements for switches, indicators, relays, control signals, and automated test fixtures.
Hardware Counter/Timers
The USB-6225 includes hardware counter/timer functionality for event and timing measurements.
- Подсчет событий
- Frequency measurement
- Period measurement
- Pulse-width measurement
- Генерация импульсов
- Приложения кодировщика
Advantage: Hardware counters provide more accurate timing and event measurements than software-timed implementations.
Hardware Triggering
The USB-6225 provides hardware triggering resources for coordinating acquisition and generation operations.
- Digital triggering
- Hardware-timed acquisition
- External event synchronization
- Triggered measurement sequences
- Automated testing
Advantage: Hardware triggering improves measurement repeatability by allowing acquisition to begin in response to defined external events.
USB Connectivity
Unlike PCI-based M Series DAQ boards, the USB-6225 connects externally to a compatible host computer through USB.
- External USB connectivity
- No internal PCI slot required
- Desktop measurement systems
- Laboratory installations
- Portable test configurations
Advantage: USB connectivity makes it easier to deploy high-channel-count DAQ functionality with computers that do not provide conventional PCI expansion slots.
NI-DAQmx Software Support
The USB-6225 is supported by NI-DAQmx for device configuration, acquisition, generation, timing, triggering, and application development.
- NI-DAQmx driver support
- Интеграция LabVIEW
- NI MAX configuration
- TestStand integration
- C/C++ and .NET application development
Advantage: Provides an established software ecosystem for developing customized data acquisition and automated test applications.
Technical Specifications
| Параметр | Описание |
|---|---|
| Product Type | USB M Series Multifunction DAQ Device |
| Analog Input Channels | Up to 80 Single-Ended / 40 Differential |
| Analog Input Resolution | 16-битный |
| Maximum Analog Input Sample Rate | Up to 250 kS/s Aggregate |
| Analog Input Architecture | Multiplexed |
| Analog Output Channels | 2 |
| Analog Output Resolution | 16-битный |
| Цифровой ввод-вывод | 24 Lines |
| Counter/Timer Functions | Hardware Counter/Timers |
| Hardware Triggering | Supported |
| Host Interface | USB |
| Product Family | NI M Series Multifunction DAQ |
| Driver | НИ-DAQmx |
| Primary Applications | High-Channel Data Acquisition, Sensor Measurement, Industrial Monitoring and Automated Testing |
Software Ecosystem
The NI USB-6225 integrates with NI software tools for measurement, data logging, analysis, automation, and test system development.
- NI-DAQmx: Provides the primary driver and programming APIs for analog input, analog output, digital I/O, counters, triggering, and timing.
- LabVIEW: Enables graphical development of data acquisition, visualization, analysis, control, and automated measurement applications.
- NI MAX: Provides hardware detection, configuration, self-test, diagnostics, and basic measurement verification.
- TestStand: Allows USB-6225 measurements and control functions to be incorporated into automated validation and production test sequences.
- C/C++ and .NET: Enable engineers to create custom measurement applications using compatible NI-DAQmx APIs.
Industries
- Промышленная автоматизация
- Electronic Manufacturing
- Automated Test Equipment
- Automotive Testing
- Аэрокосмическая и оборонная промышленность
- Scientific Research
- Laboratory Measurement
- Мониторинг процессов
Applications
High-Channel Sensor Acquisition
The large analog input capacity makes the USB-6225 suitable for applications that need to monitor many sensors from one DAQ platform.
- Мониторинг температуры
- Pressure measurement
- Position measurement
- Voltage acquisition
- General-purpose sensor monitoring
Industrial Data Logging
The USB-6225 can acquire multiple conditioned industrial signals for long-term monitoring and analysis.
- Process monitoring
- Machine data acquisition
- Диагностика оборудования
- Long-duration data logging
- Production monitoring
Автоматизированные испытательные системы
The combination of analog input, analog output, digital I/O, and timing resources makes the USB-6225 useful for automated validation systems.
- Functional testing
- Electronic validation
- Production testing
- Device characterization
- Automated measurement sequences
Laboratory Automation
USB connectivity makes the USB-6225 particularly convenient for laboratory measurement systems.
- Automated experiments
- Research measurements
- Prototype evaluation
- Multi-channel data acquisition
- Laboratory data logging
Test Fixture Control
Digital I/O and analog output resources can be used alongside analog acquisition to interact with external test hardware.
- Fixture monitoring
- Digital device control
- Analog control signals
- Automated test sequencing
Event and Frequency Measurement
The integrated counter/timer functionality supports hardware-based digital timing measurements.
- Подсчет событий
- Frequency measurement
- Period measurement
- Pulse-width measurement
- Encoder acquisition
Comparison with Similar Multifunction DAQ Devices
| Модель | Основное различие | Best Application |
|---|---|---|
| NI USB-6225 | USB M Series multifunction DAQ emphasizing high analog input channel density with up to 80 AI and 250 kS/s acquisition. | High-channel external USB data acquisition |
| NI PCI-6225 | PCI implementation for desktop and industrial computers that provide a conventional PCI expansion slot. | Internal PCI high-channel DAQ systems |
| NI PCI-6255 | Higher-performance M Series architecture for applications requiring faster high-channel-count analog acquisition. | Faster multi-channel automated measurement |
| NI USB-6281 | High-accuracy USB M Series multifunction DAQ with 18-bit analog input resolution for precision measurement applications. | Precision USB data acquisition |
Recommended Related Products
| NI PCI-6225 | PCI version for high-channel-count measurement systems built around desktop or industrial computers with PCI expansion. |
| NI PCI-6255 | Higher-speed M Series DAQ for applications requiring increased acquisition performance across many analog channels. |
| NI USB-6281 | 18-bit high-accuracy USB multifunction DAQ for precision sensor and voltage measurement applications. |
| NI PXI-6225 | PXI implementation for users building modular automated test and measurement systems. |
Why Choose USB-6225?
- Up to 80 analog input channels
- 16-bit analog input resolution
- Up to 250 kS/s aggregate sampling
- 2 analog output channels
- 24 digital I/O lines
- Hardware counter/timer functionality
- Hardware triggering support
- Convenient external USB interface
- No internal PCI slot required
- NI-DAQmx software integration
- Suitable for high-channel sensor acquisition
- Ideal for industrial and laboratory data logging
Frequently Asked Questions
What is the NI USB-6225?
The NI USB-6225 is a high-channel-count M Series multifunction USB DAQ device designed for analog measurement, analog output, digital I/O, timing, sensor acquisition, and automated test applications.
How many analog inputs does the USB-6225 provide?
The USB-6225 provides up to 80 single-ended analog input channels or up to 40 differential analog input channels, depending on the selected terminal configuration.
What is the analog input resolution of the USB-6225?
The USB-6225 provides 16-bit analog input resolution for general-purpose voltage and sensor measurement.
What is the maximum sampling rate of the USB-6225?
The USB-6225 provides a maximum aggregate analog input sampling rate of up to 250 kS/s. Because it uses a multiplexed architecture, this rate is shared across the active analog input channels.
Does the USB-6225 have analog outputs?
Yes. The USB-6225 provides two analog output channels for programmable voltage generation, stimulus, and control applications.
How many digital I/O lines does the USB-6225 provide?
The USB-6225 provides 24 digital I/O lines for monitoring, control, test fixture integration, and other digital applications.
Does the USB-6225 use simultaneous sampling?
No. The USB-6225 uses a multiplexed analog input architecture. Its analog input channels are scanned through a shared analog-to-digital conversion subsystem rather than using an independent ADC for every channel.
What is the difference between USB-6225 and PCI-6225?
The primary difference is the host interface and physical implementation. The USB-6225 is an external USB-connected DAQ device, while the PCI-6225 installs directly into a compatible computer’s PCI expansion slot. Both are intended for high-channel-count M Series data acquisition applications.
What is the difference between USB-6225 and USB-6281?
The USB-6225 emphasizes high analog input channel density, while the USB-6281 emphasizes measurement accuracy with 18-bit analog input resolution. The USB-6225 is better suited to systems requiring many measurement points, while the USB-6281 is generally more appropriate when higher analog measurement resolution is the priority.
Can the USB-6225 be used for sensor measurements?
Yes. The USB-6225 is suitable for multi-channel sensor acquisition when used with sensors and any required signal conditioning. Typical applications include voltage, temperature, pressure, position, and other physical measurements.
Is the USB-6225 suitable for data logging?
Yes. Its high analog input channel count and USB connectivity make the USB-6225 suitable for laboratory, industrial, and long-duration multi-channel data logging systems.
What software supports the USB-6225?
The USB-6225 is supported through NI-DAQmx and can be integrated into compatible LabVIEW, NI MAX, TestStand, C/C++, and .NET measurement applications.
Is USB-6225 suitable for automated testing?
Yes. Its combination of analog inputs, analog outputs, digital I/O, hardware counters, triggering, and NI-DAQmx support allows the USB-6225 to be incorporated into automated functional, validation, and production test systems.
Заключение
Земля NI USB-6225 M Series multifunction DAQ device provides a flexible external solution for high-channel-count data acquisition, industrial monitoring, sensor measurement, laboratory automation, and automated testing. With up to 80 analog inputs, 16-bit resolution, up to 250 kS/s aggregate sampling, two analog outputs, 24 digital I/O lines, counter/timer functionality, USB connectivity, and NI-DAQmx integration, the USB-6225 is particularly well suited for measurement systems that require a large number of analog channels without an internal PCI installation.
