National Instruments PXI-5122

The National Instruments PXI-5122 is a high-performance oscillosope featuring a sample rate of 100 MS/s and a bandwidth of 100 MHz, designed for a broad spectrum of applications including communications, research, and consumer electronics. This versatile digitizer comes in multiple models, each tailored to different data acquisition needs based on onboard memory capacity: the 8 MB model (Part Number: 778756-01) captures 4 million 14-bit samples per channel; the 32 MB model (Part Number: 778756-02) increases this capacity to 16 million samples per channel; the 256 MB model (Part Number: 778756-03) offers 128 million samples per channel; and the 512 MB model (Part Number: 778756-04) delivers the largest capacity of 256 million samples per channel, enabling comprehensive waveform storage and detailed signal analysis.

The PXI-5122 integrates 14-bit analog-to-digital converters (ADCs) alongside low-noise variable-gain amplifiers and a low-jitter 100 MHz timebase, resulting in a spurious-free dynamic range (SFDR) of 75 dBc and a signal-to-noise ratio (SNR) of 62 dB. Its 14-bit resolution allows for 256 times the quantization levels compared to traditional 8-bit instruments, optimizing both time-domain and frequency-domain measurements. The digitizer features software-selectable input impedance (50 Ω or 1 MΩ) and an input range from 200 mVpp to 20 Vpp, along with seven trigger modes and anti-aliasing and noise filters, providing the flexibility necessary for the most stringent application requirements.

Operating with the NI-SCOPE driver software, the PXI-5122 is compatible with LabVIEW, LabWindows/CVI, and other application development environments. Setup is accomplished through NI Measurement & Automation Explorer (MAX) and the front panel is equipped with multiple connectivity options including two BNC female connectors for analog inputs (CH 0 and CH 1), a BNC female connector for external triggering (TRIG), two SMB jack connectors for clock input/output (CLK IN and CLK OUT), and a 9-pin mini-circular DIN connector (AUX I/O) for digital triggers and probe compensation.

The device's programmable DC offset feature maximizes the use of the full 14-bit vertical range, enhancing measurement accuracy. The PXI-5122 also supports self-calibration to ensure measurement stability across an operating temperature range of 0 to 55 °C, with external calibration recommended every two years for maintaining long-term accuracy. Based on SMC (Synchronization and Memory Core) architecture, this model can capture over 1 million triggered waveforms autonomously in multi-record acquisition mode, making it exceptionally suited for applications such as RADAR, ultrasound, and event detection. For optimal performance, a warm-up time of 15 minutes is advised.

While the PXI-5122 has transitioned into the NI Maintenance phase as of December 30, 2022, it will remain available through Apex Waves for purchasing, selling, and repair of end-of-life NI hardware. For pricing and to request a quote, please contact a sales representative.