NI PCIe-5155 High-Speed Oscilloscope/Digitizer Card

The NI PCIe-5155 is a high-speed oscilloscope/digitizer card built for demanding real-time data acquisition. This dual-channel instrument captures analog signals at sampling rates up to 5 GS/s with 10-bit resolution and 1.5 GHz maximum bandwidth. The 50-ohm input impedance and PCI Express interface enable direct integration into high-performance computing systems, while 1 GB of onboard memory supports extended acquisition windows and reduces host transfer overhead.

– Technical Specifications

Analog Inputs
• 2 channels
• 10-bit resolution
• 50-ohm input impedance

Sampling and Bandwidth
• Maximum real-time sampling rate: 5 GS/s
• Sampling rate range: MHz to GHz
• Maximum bandwidth: 1.5 GHz

Memory and Interfaces
• Onboard memory: 1 GB
• Interface: PCI Express (PCIe)

Triggering and Synchronization
• Multiple trigger options for coordinated data acquisition
• Advanced synchronization between multiple cards or external devices
• NI TClk synchronization method supported

Physical
• Dimensions: 6.3 × 3.9 inches
• Weight: 5.7 oz

– Key Features

• Real-time sampling from MHz to GHz frequencies enables precise transient capture and high-fidelity waveform recording
• Onboard signal processing available on select variants for immediate data analysis without host overhead
• Multi-card synchronization via NI TClk aligns sample clocks across distributed digitizers for simultaneous multi-source acquisition
• 1 GB memory eliminates frequent data transfers and enables longer uninterrupted captures

– Typical Applications

• RF signal analysis and characterization
• Radar signal processing and measurement
• Sonar and underwater acoustics

– Compatibility & Integration

Supported APIs: LabVIEW, C/C++, Python, NI-SCOPE. Direct PCIe integration into existing instrumentation systems.