Description
The USB-6281 is a sophisticated PC-based Multifunction DAQ device manufactured by National Instruments. It is designed to cater to various data acquisition needs with its plethora of features and specifications. The device comes with multiple part numbers, including 780054-01, 780054-07, 780053-04, 780053-01, and 780054-04, ensuring a wide range of options for different applications.
One of the key features of the USB-6281 is its versatile analog input channels. It offers 16 single-ended or 8 differential channels, providing flexibility in connecting different types of sensors and signals. The device boasts an 18-bits ADC resolution, ensuring high precision in measurement. For sampling rates, it can reach up to 625 kS/s for a single channel, with a maximum of 500 kS/s for multiple channels, allowing for efficient data capture even in demanding applications.
When it comes to protection and reliability, the USB-6281 is designed with robust overvoltage protection. It can handle up to ±25 V when on and ±15 V when off, combined with an input current protection of ±25 mA max per AI pin. Additionally, the input bias current is maintained at a low ±100 pA, minimizing the risk of damage to the device or connected equipment.
Besides its impressive input capabilities, the device also features 2 analog output channels with a 16-bits DAC resolution. It supports a high-speed update rate of 2.86 MS/s for one channel and 2.00 MS/s per channel for two channels, enabling rapid response and control in applications. The timing accuracy of the USB-6281 is precise, with a specification of 50 ppm, ensuring that timing-critical applications can be handled with ease.
In conclusion, the National Instruments USB-6281 is a highly capable and versatile DAQ device, suitable for a wide range of data acquisition and control applications. Its combination of high-resolution input and output channels, robust protection features,
| Specification | Detail |
|---|---|
| Manufacturer | National Instruments |
| Model | USB-6281 |
| Part Numbers | 780054-01, 780054-07, 780053-04, 780053-01, 780054-04 |
| Category | PC-based Multifunction DAQ |
| Analog Input Channels | 16 single-ended or 8 differential |
| ADC Resolution | 18-bits |
| Single Channel Sample Rate | 625 kS/s max |
| Multiple Channel Sample Rate | 500 kS/s max |
| Overvoltage Protection (On) | ±25 V |
| Overvoltage Protection (Off) | ±15 V |
| Input Current (Overvoltage) | ±25 mA max/AI pin |
| Input Bias Current | ±100 pA |
| Analog Output Channels | 2 |
| DAC Resolution | 16-bits |
| Output Channel Update Rate (1 channel) | 2.86 MS/s max |
| Output Channel Update Rate (2 channels) | 2.00 MS/s per channel max |
| Timing Accuracy | 50 ppm |
Question 1: How many AI channels does the USB-6281 have?
Answer 1: 16 single-ended or 8 differential channels
Question 2: What is the ADC resolution of the USB-6281?
Answer 2: 18-bits
Question 3: What is the maximum sampling rate for the USB-6281?
Answer 3: 625 kS/s for single channel
Question 4: How much overvoltage protection does the USB-6281 offer?
Answer 4: ±25 V when on, ±15 V when off
Question 5: What is the analog output channel DAC resolution?
Answer 5: 16-bits
