National Instruments PXIe-5122

The National Instruments PXIe-5122 is a high-speed PXI Express digitizer and oscilloscope module designed for demanding measurement applications requiring simultaneous dual-channel acquisition. It delivers 14-bit vertical resolution at real-time sampling rates up to 100 MS/s, with Random Interleaved Sampling extending capability to 2.0 GS/s for transient capture and frequency-domain analysis across the 100 MHz bandwidth.

– Technical Specifications

• Analog Channels: 2, simultaneously sampled
• Vertical Resolution: 14 bits
• Real-Time Sampling Rate: 100 MS/s
• Random Interleaved Sampling Rate: 2.0 GS/s
• Bandwidth: 100 MHz
• Input Impedance: Software-selectable 50 Ω or 1 MΩ
• Input Range: 0.2 Vpp to 2.0 Vpp
• Spurious-Free Dynamic Range: >75 dBc (DC to 50 MHz, including harmonics)
• Signal-to-Noise Ratio: 62 dB (DC to 50 MHz, excluding harmonics)
• Onboard Clock Phase Noise: −100 dBc/Hz @ 100 Hz, −120 dBc/Hz @ 1 kHz, −130 dBc/Hz @ 10 kHz
• Timestamping Resolution: 100 ps
• Trigger Modes: 7 available modes

– Memory & Data Streaming

• Onboard Memory: 8 MB, 64 MB, 256 MB, or 512 MB per channel (4 to 256 million 14-bit samples per channel)
• Multi-Record Acquisition: Over 1 million triggered waveforms without software intervention
• Data Streaming Rates: Up to 110 MB/s (PCI/PXI) or 400 MB/s (PXI Express) to host; peer-to-peer streaming supported

– Key Features

• Self-calibration across operating temperature range (0 to 55 °C) ensures measurement stability
• Dual simultaneous sampling eliminates channel-to-channel timing skew
• Flexible memory configurations support both high-resolution single captures and extended multi-record sequences
• Software-configurable input impedance adapts to 50 Ω RF and 1 MΩ high-impedance measurements

– Typical Applications

Automotive electronics, communications signal analysis, scientific research, military and aviation systems, and consumer electronics testing where low-noise, high-resolution acquisition is critical.

– Compatibility & Integration

PXI Express module; operates within PXI platform synchronization capabilities. Power consumption: 29.28 W typical, 33.12 W maximum.