I. Basic Information

Product Name: PCI-4461

Manufacturer: National Instruments NI

Product Type: PCI Bus Dynamic Signal Acquisition Card DSA

Status: Out of Production. No new stock available in 2026

Alternative Model: PXIe-4461

Features: 2 Input Channels, 2 Output Channels, High Precision Audio Vibration Card

II. Main Applications

Acoustic testing, audio analysis, microphone calibration, vibration testing, noise analysis, modal experiments, speaker testing

III. Analog Input

Number of channels: 2, differential synchronous sampling

Resolution: 24-bit Delta-Sigma ADC

Sampling rate: Maximum 204800 per second

Analog bandwidth: DC to 90kHz

Dynamic range: 110dB

Total harmonic distortion: -100dB at 1kHz

Input coupling: Software selectable AC/DC

Input range: Gain 0dB ± 10V, 20dB ± 1V, 30dB ± 0.316V

IV. Analog Output

Number of channels: 2, synchronous update

Resolution: 24-bit

Update rate: Maximum 204800 per second

Output range: 0dB ± 10V, 20dB ± 1V, 40dB ± 0.1V

Output bandwidth: DC to 80kHz

V. Digital IO and Counter

Digital trigger: 1 channel SMB external trigger

No general digital IO or counter

VI. Synchronization and Triggering

Trigger mode: Software trigger, hardware external trigger

Synchronization bus: Supports RTSI bus, multi-card synchronization

Anti-aliasing: Built-in high-order programmable anti-aliasing filter

VII. Electrical and Mechanical

Bus interface: PCI 32-bit

Board size: Standard PCI half-length card

Power supply: PCI slot power supply

Operating temperature: 0 to 55 degrees Celsius

Connector: BNC analog input/output, SMB trigger

VIII. Software Support

Driver: NI-DAQmx

Development environment: LabVIEW, LabWindowsCVI, Visual Studio

Operating system: Windows full series 32/64-bit

IX. Key Features

24-bit high precision, dynamic range 110dB

2 AI channels, 2 AO channels, synchronous, suitable for audio acoustic closed-loop testing

Low noise, low distortion, built-in anti-aliasing filter

RTSI multi-card synchronization, BNC interface plug-and-play