High-speed PCB board interconnect design technology includes testing, simulation, and various standards to ensure accurate analysis. New applications and advancements in interconnect test technology focus on power supply ground noise, synchronous switching noise, and jitter, utilizing spectrum analyzers, network analyzers, and oscilloscopes for calibration and modeling of passive devices. Power integrity testing involves analyzing power system characteristics and power ground noise, while clock signal jitter testing can be conducted using a spectrum analyzer to troubleshoot and locate issues caused by crystal oscillators or phase-locked loops.