The National Instruments 781219-01, also known as the PXIe-5630, is a compact 2-Port Vector Network Analyzer designed for high-performance applications within PXI Express systems. This versatile VNA performs vector measurements of transmission (S21) and reflection (S11) coefficients over a frequency range spanning from 10 MHz to 6 GHz, making it an excellent choice for automated design validation and production testing. It features a high dynamic range and exceptional measurement accuracy, with frequency accuracy maintained at ±2.5 ppm, supported by both internal and external timebase aging and temperature stability to ensure reliable operations.

The internal timebase demonstrates a low aging rate of ±1 ppm and a temperature stability of ±2.5 ppm/°C. The analyzer covers a power range of +5 dBm to -30 dBm, with an accuracy of ±2 dB at 5 dBm test port power and ±4 dB across all test port power levels. This granularity is further enhanced by a power step resolution of 0.5 dB, allowing precise adjustments for diverse measurement scenarios. Optimized for low noise and high dynamic range, the receiver characteristics exhibit a noise floor that varies from <-115 dBm/Hz at frequencies below 3 GHz to <-110 dBm/Hz up to 6 GHz. With more than 100 dB of dynamic range, the VNA is capable of accurately detecting even the weakest signals.

The 781219-01 features rapid measurement speeds suited for high-throughput testing environments, with the ability to complete a sweep in zero span mode with a 30 kHz intermediate frequency bandwidth (IFBW) in as little as 28 ms. Its compact dimensions of 21.6 cm × 4.0 cm × 13.0 cm and a weight of 680 g make it an efficient solution for space-constrained applications. Additionally, the VNA supports system performance corrections with precision calibration kits, ensuring consistent directivity, source match, and load match specifications across its operational frequency range.