Four frequency platform variants are available: ZNBT8 (9 kHz ~ 8.5 GHz), ZNBT20 / ZNBT26 / ZNBT40 (100 kHz ~ 20 / 26.5 / 40 GHz). Base models come with 4 or 8 built-in ports, expandable to 12/16/20/24 ports via license options. It delivers ultra-wide dynamic range up to 140 dB and millisecond-level ultra-fast sweep speed. One single unit can perform parallel simultaneous testing of multiple multi-port RF components, drastically cutting test cycle time for phased array antennas, multiplexers, RF front-end modules and high-speed PCB signal integrity mass tests.