Description
Product Overview
The NI PCI-6221 is a multifunction DAQ device designed for high-precision and high-speed data acquisition. It features 16 single-ended or 8 differential analog input channels with 16-bit resolution, supporting a maximum sample rate of 250 kS/s per channel. The device also includes four 16-bit analog output channels with a maximum update rate of 833 kS/s for single-channel operation. Additionally, it offers 48 digital I/O lines and two 32-bit counters/timers for precise control and measurement。
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | NI PCI-6221 |
| Manufacturer | National Instruments |
| Product Type | Multifunction DAQ Board |
| Analog Input Channels | 16 single-ended or 8 differential |
| ADC Resolution | 16 bits |
| Maximum Sample Rate | 250 kS/s per channel |
| Analog Output Channels | 4 |
| DAC Resolution | 16 bits |
| Maximum Update Rate | 833 kS/s (single channel) |
| Digital I/O Lines | 48 |
| Counter/Timers | 2 (32-bit) |
| I/O Connector | 68-pin VHDCI |
| Power Requirements | +5 V, +12 V |
| Dimensions | 4.2 in. × 6.1 in. |
| Weight | 3.5 oz. |
| Operating Temperature Range | 0 °C to 55 °C |
| Storage Temperature Range | -20 °C to 70 °C |
| Relative Humidity | 10% to 90% noncondensing |
| Warranty | Three Year Warranty |
NI PCI-6221
Main Features and Advantages
High-Speed Data Acquisition: Capable of acquiring data at up to 250 kS/s per channel。
High-Precision Measurements: 16-bit ADC resolution ensures accurate analog input measurements。
Flexible Channel Configuration: Supports both differential and single-ended analog input configurations。
Analog Output Capability: Features four 16-bit DAC channels with a maximum update rate of 833 kS/s for single-channel operation。
Digital I/O and Counters: Equipped with 48 digital I/O lines and two 32-bit counters for additional control and measurement capabilities。
Overvoltage Protection: Provides ±25 V overvoltage protection for up to two AI pins when the device is on。
Wide Input Range: Supports input ranges from ±0.2 V to ±10 V。
Low Crosstalk: Ensures minimal interference between channels with crosstalk levels as low as -90 dB for non-adjacent channels。
NI PCI-6221
Application Field
The NI PCI-6221 is widely used in various fields due to its versatility and high performance. It is ideal for applications in:
Scientific Research: For precise measurement and control in laboratory settings。
Industrial Automation: For real-time monitoring and control of industrial processes。
Medical Diagnostics: For acquiring physiological signals such as ECG and EEG。
Environmental Monitoring: For measuring environmental parameters like air quality and water quality。
Mechanical Manufacturing: For building machine vision and motion control systems。
Related Products
NI-DAQmx: Software for data acquisition and control, providing programming interfaces for LabVIEW, LabWindows/CVI, and Measurement Studio。
LabVIEW: A graphical programming environment for developing custom applications。
SCC or SCXI Signal Conditioning Modules: For high-voltage and sensor measurements。
Installation and Maintenance
Pre-installation preparation: Ensure you have the NI PCI-6221 device, a compatible PCI slot, and appropriate cables. Turn off the power and unplug the system. Install the device in the PCI slot and secure it with the provided screws. Connect the necessary cables and ensure all connections are secure。
Maintenance recommendations: Regularly inspect the connections for wear or damage. Clean the device using a soft, non-metallic brush to remove dust and ensure the device is completely dry before reusing it. Store the device in a dry place with relative humidity between 10% and 90% noncondensing。
Product Guarantee
The NI PCI-6221 is backed by a three-year warranty from National Instruments, ensuring the quality and reliability of the product。
