Description
The National Instruments USB-6281 is a PC-based multifunction Data Acquisition (DAQ) device that provides a wide range of features for data collection and control applications. It supports 16 single-ended or 8 differential analog input channels, allowing for versatile data gathering from various sensors and input sources. With an 18-bit Analog-to-Digital Converter (ADC) resolution, it ensures high precision in measurements.
The maximum sampling rate for a single channel is 625 kilo-samples per second (kS/s), while for multiple channels, it can process data at a rate of up to 500 kS/s, providing fast data acquisition capabilities for real-time analysis. The device offers robust overvoltage protection of ±25 V when powered on, and ±15 V when powered off, ensuring the safety of the device and connected equipment. The input current for overvoltage conditions is limited to ±25 mA maximum per Analog Input (AI) pin, with an input bias current of ±100 picoamperes (pA), highlighting its capability to handle unexpected electrical conditions while maintaining precise input measurements.
In addition to its analog input capabilities, the USB-6281 also features 2 analog output channels, with a 16-bit Digital-to-Analog Converter (DAC) resolution, providing accurate and smooth output signals. The maximum update rate for one channel is 2.86 Mega-samples per second (MS/s), and for both channels, it delivers a high-speed performance of 2.00 MS/s per channel, enabling efficient signal generation for control and simulation tasks.
The part numbers associated with the National Instruments USB-6281 include 780054-01, 780054-07, 780053-04, 780053-01, and 780054-04. These part numbers indicate the variety of configurations and options available for the device, catering to a wide range of application requirements and specifications.
| Specification | Detail |
|---|---|
| Manufacturer | National Instruments |
| Part Numbers | 780054-01, 780054-07, 780053-04, 780053-01, 780054-04 |
| Model | USB-6281 |
| Category | PC-based Multifunction DAQ |
| Analog Inputs | 16 single-ended or 8 differential channels |
| ADC Resolution | 18-bits |
| Max Sample Rate (Single Channel) | 625 kS/s |
| Max Sample Rate (Multiple Channels) | 500 kS/s |
| Overvoltage Protection | ±25 V (device on), ±15 V (device off) |
| Input Current (Overvoltage) | ±25 mA max/AI pin |
| Input Bias Current | ±100 pA |
| Analog Outputs | 2 channels |
| DAC Resolution | 16-bits |
| Max Update Rate (One Channel) | 2.86 MS/s |
| Max Update Rate (Both Channels) | 2.00 MS/s per channel
Question 1: What is the ADC resolution of the USB-6281? Question 2: How many analog input channels does the USB-6281 support? Question 3: What is the overvoltage protection for the USB-6281 when powered on? Question 4: What is the maximum DAC update rate for one channel on the USB-6281? Question 5: What is the input current limit for overvoltage on the USB-6281? |
