NI PCI-4474 Data Acquisition Card

NI PCI-4474 Data Acquisition Card

Performance parameters
Number of channels: 4-channel differential analog input, capable of synchronously collecting 4 signals, suitable for multi-channel synchronous measurement scenarios.
Resolution: 24-bit resolution ADC, capable of precisely quantifying the input signal and capturing minute changes in the signal.
Sampling rate: The maximum sampling rate is 102.4kS/s, which can meet the acquisition requirements of most sound and vibration signals and accurately restore the signal waveform and spectral characteristics.
Dynamic range: It has a dynamic range of 110dB within a 45kHz bandwidth, enabling accurate acquisition and measurement when both large and small signals coexist, reducing the impact of distortion and noise.
Frequency characteristics: It features a cut-off frequency of 3.4Hz high-pass filter. The software can be configured with AC/DC coupling, allowing for the selection of coupling methods based on signal characteristics and adapting to different types of signal sources.

Functional characteristics
IEPE conditioning: Integrated electronic piezoelectric (IEPE) conditioning, it can be directly connected to large dynamic range sensors such as microphones and accelerometers, facilitating the collection and analysis of sound and vibration signals.
Signal processing: Advanced ∑-Δ type ADC is adopted to achieve low noise and low distortion, with excellent linearity. The quantization noise is shaped through a digital filter to ensure that the PCI-4474 is not affected by the differential nonlinearity (DNL) distortion commonly found in traditional data acquisition devices.
Trigger function: Supports multiple trigger modes and can collect signals through analog and digital triggering, meeting the precise trigger requirements in different application scenarios.