National Instruments USB-6281 M Series (DAQ) Multifunction 16 analog inputs (18-bit); 625 kS/s single-Ch (500 kS/s aggregate) 2 analog outputs (16-bit 2.8 MS/s); 24 digital I/O (8 clocked); two 32-bit counters
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Description
The National Instruments USB-6281 M Series DAQ offers a well-rounded feature set for diverse data acquisition tasks. It provides 16 analog input channels with a high 18-bit resolution, allowing for precise measurements of analog signals. While not quite as fast as some DAQs in the M Series, its single-channel sampling rate of 625 kS/s is still suitable for many applications. It offers a balance between speed and channel count with a 500 kS/s aggregate sampling rate for capturing data from multiple channels simultaneously. The USB-6281 also boasts 2 analog output channels for generating control signals and 24 digital I/O lines for integrating with logic devices or triggering events. Two 32-bit counters provide additional functionality for high-resolution counting or frequency measurement. Overall, the USB-6281 M Series DAQ is a versatile tool for engineers and scientists seeking a balance between performance and affordability for various data acquisition projects.
Specifications
- Analog Inputs: 16 channels (differential or single-ended)
- Analog Input Resolution: 18-Bit (262,144 discrete levels)
- Maximum Single-Channel Sampling Rate: 625 kS/s
- Aggregate Sampling Rate: 500 kS/s
- Analog Outputs: 2 channels
- Analog Output Resolution: 16-Bit
- Analog Output Maximum Sample Rate: 2.8 MS/s
- Digital I/O: 24 lines (8 clocked)
- Counters: Two 32-Bit
Laboratory Calibration
Micro Precision operates 36 laboratories globally providing reliable localized support
- Certified metrologists staffing laboratories in North America, Central America, South America, Europe, Asia, and the Middle East
- Comprehensive scopes of accreditation to meet a broad range of customer needs
- Expedited calibration services available
- Pickup and delivery services available
- Environmentally controlled facilities to ensure high quality and accurate calibrations and measurements.
Laboratory Calibration
Micro Precision operates 36 laboratories globally providing reliable localized support
- Certified metrologists staffing laboratories in North America, Central America, South America, Europe, Asia, and the Middle East
- Comprehensive scopes of accreditation to meet a broad range of customer needs
- Expedited calibration services available
- Pickup and delivery services available
- Environmentally controlled facilities to ensure high quality and accurate calibrations and measurements.
Quality Certified Test Equipment Repair Services
When a piece of equipment fails you have the option to repair or replace that item. Oftentimes repair is an economical and efficient solution. Micro Precision’s repair offering provides advantages to our customers:
- Cost effective; often less than OEM
- Efficient; often much better turn-time than the OEM
- Flexibility; willingness to work with customers to meet their needs
- Warranted repairs
- Ability to service many obsolete instruments
Quality Certified Test Equipment Repair Services
When a piece of equipment fails you have the option to repair or replace that item. Oftentimes repair is an economical and efficient solution. Micro Precision’s repair offering provides advantages to our customers:
- Cost effective; often less than OEM
- Efficient; often much better turn-time than the OEM
- Flexibility; willingness to work with customers to meet their needs
- Warranted repairs
- Ability to service many obsolete instruments
Cost Effective Test Equipment Options
From the leasing of specialized electronic equipment for a specific task, to the purchase of physical and dimensional tools, we offer leasing services as well as used test equipment sales. We also locate hard-to-find electronics, and provide flexible options to meet ever-changing equipment needs.
Cost Effective Test Equipment Options
From the leasing of specialized electronic equipment for a specific task, to the purchase of physical and dimensional tools, we offer leasing services as well as used test equipment sales. We also locate hard-to-find electronics, and provide flexible options to meet ever-changing equipment needs.
Our Capabilities
Micro Precision can perform instrument calibration services on equipment from variety of applications for specific industries and lines of business. If you have a calibration need that is not listed in this area, please contact us.
Electrical
Micro Precision accredited electrical calibration lab services with multimeter, multifunction calibrator, oscilloscope, and power supply capabilities.
Optical
Micro Precision accredited optical, light, and fiber optic calibration lab services.
Thermodynamics & Chemical
Micro Precision accredited thermodynamic & chemical calibration lab services with temperature, humidity, life science, and pharma capabilities.
RF - Microwave
Micro Precision accredited RF & microwave calibration lab services.
Mechanical & Dimensional
Micro Precision accredited mechanical and dimensional calibration lab services with pressure, torque, force, flow, velocity, and aircraft jack load capabilities.
Laboratory Standards
Calibration laboratory standards are critical for your organization’s most accurate measurements.
Semiconductor Calibration
Micro Precision utilizes state-of-the-art technology to analyze semiconductor wafer thickness and step height.


