NI PXIe-5114 250 MS/s, 8-Bit Oscilloscope/Digitizer

The NI PXIe-5114 is a 2-channel, 8-bit oscilloscope/digitizer module for the PXI Express platform, delivering real-time signal acquisition at up to 250 MS/s with a 125 MHz analog bandwidth. This high-speed digitizer supports flexible input configurations including selectable 50 Ω or 1 MΩ impedance, AC/DC/GND coupling modes, and programmable full-scale ranges from ±0.8 V to ±51.2 V. Advanced triggering capabilities span edge, window, hysteresis, analog, digital, and video trigger modes, while optional Random Interleaved Sampling achieves 5.0 GS/s effective rates for bandwidth-limited signals. Onboard memory scales from 8 MB to 512 MB per channel, accommodating extended record lengths. The module integrates NI-TClk synchronization for multi-module chassis alignment with 500 ps typical skew, external clock input from 50 MHz to 250 MHz, and reference clock support at 1 MHz to 20 MHz. Dual BNC analog inputs, external trigger BNC, SMB clock input, and a 9-pin DIN auxiliary connector provide comprehensive connectivity. The instrument driver includes data streaming and integrated analysis functions for production test, signal monitoring, and R&D measurement applications requiring synchronized, high-density acquisition in modular systems.

– Technical Specifications

• Channels: 2 analog, simultaneously sampled
• Maximum real-time sampling rate: 250 MS/s
• Random Interleaved Sampling rate: 5.0 GS/s
• Analog bandwidth: 125 MHz
• Vertical resolution: 8-bit
• Onboard memory: 8 MB, 64 MB, 128 MB, or 512 MB per channel
• Input impedance: 50 Ω or 1 MΩ (1 MΩ with 26 pF nominal parallel capacitance)
• Input coupling: AC, DC, GND (AC coupling on 1 MΩ input only)
• AC coupling cutoff: 12 Hz (–3 dB)
• Full-scale input range: ±0.8 V to ±51.2 V (configuration-dependent)
• Maximum input overload: BNC 42 V peaks; PFI 0/1 –0.5 V to 5.5 V
• Internal sample clock: 250 MHz
• External clock input: 50 MHz to 250 MHz
• External reference clock: 1 MHz to 20 MHz
• Timestamp resolution: 40 ps (onboard TDC); 100 ps (timestamp-triggered events)
• Intermodule SMC synchronization skew: 500 ps typical

– Key Features

• Edge, window, hysteresis, analog, and digital trigger types
• SDTV/EDTV/HDTV video triggering support
• Pre-trigger and post-trigger single- and multiple-record acquisition modes
• NI-TClk synchronization for multi-chassis module alignment
• Dual BNC connectors for analog inputs with external trigger BNC and SMB clock input
• 9-pin mini-circular DIN auxiliary connector for digital trigger lines (PFI 0/1)

– Typical Applications

High-speed signal acquisition, production test automation, real-time waveform analysis, multi-channel synchronized measurements, video signal validation, and R&D instrumentation in PXI Express chassis systems.

– Compatibility & Integration

PXI Express form factor with NI instrument driver supporting data streaming and analysis functions. Compatible with external clock and reference clock inputs for system-level timing control.