I. Basic Information

Product Name: PCI-4461

Part Number: 779307-01

Manufacturer: National Instruments NI

Product Type: PCI bus high-precision dynamic signal acquisition card DSA

Status: Out of production as of 2026, no new stock available

Alternative Model: PXIe-4461

Features: 2 input, 2 output, 24-bit, 118dB dynamic range, with IEPE

II. Main Applications

Acoustic testing, microphone calibration, audio analysis, vibration testing, NVH analysis, modal experiment, speaker testing, industrial equipment fault diagnosis

III. Analog Input

Number of channels: 2, differential synchronous sampling

Resolution: 24-bit Delta-Sigma ADC

Sampling rate: 1kS/s to 204.8kS/s, programmable

Analog bandwidth: DC to 90kHz

Dynamic range: 118dB

Total harmonic distortion: -100dB at 1kHz

Input coupling: software selectable AC/DC

IEPE conditioning: software selectable, supports IEPE sensor power supply

Input range: 6 gain levels programmable

Gain -12dB: ±42.4V

Gain -6dB: ±31.6V

Gain 0dB: ±10V

Gain 6dB: ±3.16V

Gain 12dB: ±1V

Gain 18dB: ±0.316V

IV. Analog Output

Number of channels: 2, synchronous update

Resolution: 24-bit

Update rate: up to 204.8kS/s

Output range: 3 gain levels programmable

Gain 0dB: ±10V

Gain 20dB: ±1V

Gain 40dB: ±0.1V

Output bandwidth: DC to 80kHz

V. Digital IO and Trigger

Digital trigger: 1 SMB external trigger

No general digital IO, no counter

VI. Synchronization and Trigger

Trigger mode: software trigger, hardware external trigger

Synchronization bus: supports RTSI bus, up to 3 cards synchronization

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

TEDS: supports sensor electronic data sheet

VII. Electrical and Mechanical

Bus interface: PCI, 32-bit, 5V/3.3V compatible

Board size: 17.5cm×9.9cm, standard PCI half-length card

Power supply: PCI slot power supply +5V 2.2A +12V 40mA -12V 40mA

Operating temperature: 0 to 55 degrees Celsius

Relative humidity: 10% to 90% without condensation

Connector: BNC analog input/output, SMB trigger

Weight: 226.8 grams

VIII. Software Support

Driver: NI-DAQmx

Development environment: LabVIEW, LabWindowsCVI, Visual Studio

Operating system: Windows XP, 7, 10, 11, 32-bit

IX. Key Features

24-bit ultra-high precision, dynamic range 118dB

2 AI, 2 AO, synchronous, supports IEPE sensor

6 input gain levels, 3 output gain levels, flexible range

Built-in anti-aliasing filter, TEDS sensor identification

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

Suitable for high-precision audio, acoustic, vibration closed-loop testing