Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
779974-01
779974-01, 16-Bit Resolution, 24 Bidirectional Lines, 250 kS/s, USB-6225 USB Multifunction I/O Device
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments 779974-01 USB Multifunction I/O Device
The National Instruments 779974-01, also known as the USB-6225, is a versatile USB multifunction data acquisition device designed for measurement, control, and testing applications. It provides 80 single-ended or 40 differential analog input channels with 16-bit resolution and sampling rates of up to 250 kS/s. The analog inputs support several voltage ranges from ±0.2 V to ±10 V, providing flexibility for a variety of measurement applications.
The device also includes two 16-bit analog output channels, 24 bidirectional digital I/O lines, and two 32-bit counters. The digital I/O lines can be used for tasks such as logic interfacing and relay control, while the counters can handle applications including encoder counting, measuring rotational speed and signal periods, and generating timed pulses for control systems. The 779974-01 connects to a computer through USB 2.0 and is supported by NI-DAQmx software for configuration and application development.
A built-in FIFO buffer can store up to 4,095 samples, helping manage data during acquisition. The analog inputs are protected against signals exceeding ±11 V, helping prevent damage from accidental voltage spikes. For best measurement accuracy, National Instruments recommends allowing the device to warm up for 30 minutes before use and calibrating it annually.
The 779974-01 supports digital triggering, allowing users to control when data acquisition begins. For applications involving thermocouples, strain gauges, high-voltage signals, or other specialized sensors, the device can be paired with compatible SCC or SCXI signal-conditioning modules. Mass-termination connectors also help simplify wiring and reduce the possibility of connection errors when working with a large number of signals.
The USB-6225 is well suited to applications such as end-of-line testing, actuator control, and monitoring multiple sensors or other system parameters. Its combination of analog inputs and outputs, digital I/O, and counter functions allows a single device to handle a wide range of measurement and control tasks.
The 779974-01 can be programmed using LabVIEW as well as C and Python libraries, making it suitable for both custom software and automated test systems. Because it draws power directly from the USB connection, it does not require a separate external power supply. By combining multiple measurement, control, and timing functions in one compact unit, the USB-6225 can reduce wiring, component count, and overall system complexity. It is suitable for both benchtop applications and permanent installation in test systems and equipment racks.
| Model | 779974-01 |
|---|---|
| Part Number | 779974-01 |
| Part Type | Multifunction I/O DAQ Device |
| Analog Input Channels | 80 single-ended or 40 differential |
| ADC Resolution | 16-bit |
| Maximum Sampling Rate | 250 kS/s (multiplexed) |
| Analog Output Channels | 2 channels, 16-bit DAC resolution |
| Maximum Analog Output Rate | 833 kS/s (single channel) |
| Digital I/O Channels | 24 bidirectional lines |
| Counter/Timers | Two 32-bit |
Associated part numbers for 779974-01:
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