Acqiris High-Speed Data Acquisition Card
| Brand | Auniontech |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | Acqiris |
| Pricing | Upon Request |
| Component Type | High-Speed Digitizer |
Overview
The Acqiris High-Speed Data Acquisition Card is a precision digitizer engineered for demanding time-domain and frequency-domain signal capture in optical coherence tomography (OCT), ultrafast laser diagnostics, quantum optics experiments, and high-bandwidth RF instrumentation. Built upon a modular PCI Express architecture, it employs high-fidelity analog front-end design optimized for minimal noise floor elevation and signal integrity preservation across multi-GHz bandwidths. Its core measurement principle relies on synchronous sampling of transient analog waveforms with sub-picosecond timing control, enabling coherent averaging, phase-resolved analysis, and real-time spectral reconstruction—critical for swept-source OCT (SS-OCT) systems requiring nanometer-level axial resolution and picosecond-level trigger synchronization.
Key Features
- 9-bit effective number of bits (ENOB) at full sampling rate, ensuring high dynamic range and quantization fidelity for low-amplitude signal detection
- Spurious-free dynamic range (SFDR) of 70 dBc over wide analysis bandwidth, maintaining spectral purity for harmonic-sensitive applications such as heterodyne detection and Brillouin scattering analysis
- Trigger time interpolation with 15 ps RMS jitter, supporting precise event alignment in pump-probe spectroscopy and time-of-flight measurements
- Dedicated low-jitter clock distribution architecture achieving <100 fs integrated jitter and ±1 ppm absolute clock accuracy, essential for multi-channel phase-coherent acquisition
- Front-end topology designed to suppress common-mode noise and preserve signal rise time integrity up to the Nyquist limit of the ADC
- Firmware-optimized for SS-OCT engine integration, including built-in k-space linearization, dispersion compensation pre-processing, and hardware-accelerated Hilbert transforms
Sample Compatibility & Compliance
The Acqiris digitizer supports direct interfacing with photodetectors (e.g., balanced receivers, InGaAs APDs), RF amplifiers, and analog outputs from tunable lasers used in OCT and THz time-domain spectroscopy. It complies with PCIe Gen2 x8 electrical specifications and adheres to CE/EMC Class B emission limits. For regulated environments—including clinical OCT system development—the card’s firmware architecture supports traceable calibration logging and audit-ready metadata tagging per ISO/IEC 17025 requirements. While not FDA-cleared as a standalone medical device, it meets the hardware performance benchmarks referenced in IEC 62304 Annex C for Class B software-controlled components in diagnostic imaging systems.
Software & Data Management
The Acqiris platform ships with AcqirisDAQ SDK (C/C++, Python, MATLAB APIs) and AcqirisScope GUI for configuration, real-time visualization, and batch acquisition scripting. All acquired datasets are stored in HDF5 format with embedded timestamps, channel calibration coefficients, and trigger context metadata—enabling reproducible post-processing workflows. The SDK includes GLP-compliant features: user-accessible audit trails for parameter changes, digital signature support for acquisition scripts, and optional 21 CFR Part 11–compatible electronic signature modules for regulated laboratories. Raw data throughput exceeds 2.4 GB/s sustained over PCIe, allowing continuous streaming to NVMe storage arrays without frame loss during long-duration interferogram capture.
Applications
- Swept-source optical coherence tomography (SS-OCT) system integration, especially for ophthalmic and endoscopic imaging platforms requiring high-speed k-clock synchronization
- Ultrafast laser pulse characterization (autocorrelation, FROG, SPIDER) via high-bandwidth photodiode signal digitization
- Coherent Raman scattering (CARS) and stimulated Raman scattering (SRS) lock-in detection with phase-stable reference channel acquisition
- Time-resolved photoluminescence decay analysis in semiconductor and 2D material research
- RF-over-fiber monitoring and microwave photonics signal analysis up to 2 GHz instantaneous bandwidth
- Quantum state tomography setups requiring synchronized multi-channel acquisition with deterministic latency
FAQ
Is the Acqiris digitizer compatible with third-party OCT engines or proprietary laser sweep controllers?
Yes—it provides programmable trigger input/output lines, customizable k-clock output mapping, and register-level access to internal timing registers, enabling seamless integration with external wavelength-swept lasers and FPGA-based control systems.
What is the maximum sustained acquisition duration for continuous streaming at full bandwidth?
With appropriate host-system NVMe storage and driver optimization, continuous acquisition exceeding 30 minutes at 1.25 GS/s is achievable; exact duration depends on host memory bandwidth and filesystem I/O scheduler configuration.
Does the digitizer support hardware-based averaging or real-time FFT processing?
It includes on-board FPGA resources for configurable decimation, moving-average filtering, and spectral binning—but full FFT computation is performed in host CPU/GPU using optimized libraries (FFTW, cuFFT) via the SDK.
Are calibration certificates and traceable metrology documentation available?
Yes—NIST-traceable calibration reports (including gain flatness, ENOB vs. frequency, SFDR sweeps) are provided with each unit and updated annually upon request under ISO/IEC 17025-accredited procedures.
