NI PCI-5421 High-Performance Arbitrary Waveform Generator

Built-in 14-bit DAC (Digital-to-Analog Converter) with a maximum sampling rate of 250MS/s, capable of generating analog signals up to 100MHz to meet high-frequency testing requirements.

Supports arbitrary waveform editing, allowing customization of complex waveforms (e.g., modulated signals, pulse trains, noise waveforms) via NI-Delays software or LabVIEW.

2-channel synchronous output with precise control of phase difference between channels (minimum phase resolution 0.0225°), suitable for coherent signal testing (e.g., radar simulation, communication system calibration).

Output amplitude range ±10V (adjustable, minimum step 1mV), selectable output impedance (50Ω/1MΩ) to match different load devices and reduce signal reflection interference.

Supports analog triggering (edge/window triggering), digital triggering (TTL level), and external clock synchronization, adapting to multi-device collaborative work (e.g., closed-loop system with acquisition card for synchronous generation-acquisition).

Integrates modulation modes such as AM, FM, PM, FSK, and built-in function generators (sine, square, triangle, sawtooth waves), simplifying communication protocol testing processes.

On-board 64MB waveform memory supports continuous data streaming mode (real-time data transmission via PCI bus) to meet long-term waveform playback needs.

Supports hardware interpolation (up to 8x oversampling) to enhance waveform smoothness and reduce high-frequency signal distortion.

Wireless communication signal simulation: Generates 2G/3G/4G modulated signals (e.g., QPSK, 16QAM) for base station receiver sensitivity testing and RF chip verification.

Radar system simulation: Produces linear frequency modulation (LFM) pulse signals to simulate radar echoes and test target detection algorithms.

Chip testing excitation source: Provides high-precision excitation signals for devices like ADC/DAC and amplifiers to evaluate dynamic characteristics (e.g., SNR, THD).

Power integrity testing: Generates waveforms such as ripple and transient voltage spikes to verify the anti-interference capability of power management chips.

Active noise control (ANC): Generates anti-phase acoustic signals to offset environmental noise, applied in R&D of headphone and vehicle cabin noise reduction systems.

Vibration table excitation control: Outputs sine sweep signals to test the resonance frequency and fatigue strength of structural components.

Physics experiment teaching: Simulates physical phenomena like quantum tunneling effect and LC oscillation circuits to assist theoretical teaching and experimental data verification.

Signal processing algorithm verification: Generates noisy or distorted test signals to validate the effectiveness of algorithms such as filtering, noise reduction, and feature extraction.

Waveform editing: Creates waveform data via NI-Delays software or LabVIEW (supports importing external data files), defining parameters like frequency, amplitude, and phase.

Digital processing: Waveform data is processed by onboard FPGA, supporting real-time interpolation and modulation operations to generate digital signal streams.

Digital-to-analog conversion: 14-bit DAC converts digital signals to analog signals, which are smoothed by low-pass filtering before output.

Hardware control: Communicates with the host via PCI bus, supporting trigger signals for multi-device collaborative work.

Hardware: Suitable for desktop or industrial computers with standard PCI slots, combinable with modules like NI PCI-4462 acquisition card to build closed-loop test systems.

Software: Compatible with Windows (7/10), LabVIEW Real-Time systems, and supports API interface calls in development environments like MATLAB and C++.