NI PCI-6221 is a multifunctional data acquisition card based on the PCI bus, providing high-speed data transmission and real-time signal processing capabilities. It supports multiple types of analog input and output signals, with high precision and low noise characteristics, and can provide stable and reliable signal acquisition and output control functions.
Product parameters：
Number of analog input channels: 16 (8 single ended, 8 differential)
Number of analog output channels: 2
Number of digital I/O channels: 24
Counter/Timer: 2 32-bit counters/timers
Sampling rate: up to 250 kS/s
Resolution: 16 bits
Analog input range: ± 5 V, ± 10 V
Analog output range: ± 5 V, ± 10 V
Digital I/O levels: 0 V and+5 V
Interface: PCI
Power supply voltage:+5V,+12V, -12V
Working temperature: 0 ° C to+50 ° C
Protection level: IP65
Size: 132 mm × 185 mm

Product Features：
Multi channel analog input: supports 16 channels to simultaneously collect analog signals, improving data acquisition efficiency.
High resolution: PCI-6221 provides 16 bit resolution analog input to ensure data accuracy.
Analog output: It has 2 channels of analog output and can be used to control external devices.
Digital I/O: With 24 channels of digital I/O, it can be used to control digital devices or collect digital signals.
Timer/Counter: Provides 2 32-bit timers/counters, which can be used for timing, counting, pulse generation, etc.
Flexible configuration: Input range, sampling rate, triggering method and other parameters can be flexibly configured according to different application requirements.
Timed triggering: PCI-6221 supports multiple triggering methods to achieve synchronous acquisition.
Data recording: Store the collected data in a computer.

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