The National Instruments USB-6281 is a versatile multifunction I/O device designed to provide efficient and cost-effective data acquisition capabilities across a broad spectrum of applications, including laboratory automation, research, design verification, and manufacturing testing. Compatibility with SCC and SCXI signal conditioning modules enhances its functionality, allowing for the integration of sensor and high-voltage measurements. The device is easily configured using the NI-DAQmx driver.

Featuring 16 single-ended or 8 differential analog input channels, the USB-6281 delivers an 18-bit ADC resolution with a maximum sample rate of 625 kS/s for individual channels and 500 kS/s for multiple channels. Built-in overvoltage protection, rated at ±25 V when powered on and ±15 V when powered off, safeguards all sense and analog input channels, concurrently accommodating up to eight AI pins with a maximum input current of ±25 mA during overvoltage conditions and an input bias current of ±100 pA.

In addition to its analog input capabilities, the USB-6281 includes two analog output channels that offer 16-bit DAC resolution. The first output channel supports a maximum update rate of 2.86 MS/s, while both channels collectively achieve an update rate of 2.00 MS/s per channel. Timing accuracy is specified at 50 ppm, ensuring reliable performance in critical applications.

The USB-6281 is structured for easy integration, with dimensions of 10.5 in. × 6.73 in. × 1.75 in. and a weight of 3 lb 3.4 oz. Backed by a 2-3 year warranty, this device is an essential solution for professionals requiring robust performance in multifunctional data acquisition tasks. For detailed specifications and user support, manuals are available for download, and pricing information can be obtained by contacting a sales representative.