Both VNA Master models are based on a new generation platform with much improved processing power allowing for fast measurements for frequency and Distance-To-Fault measurements. RF immunity rejection up to +17 dBm allows for accurate measurement even in RF rich environments. The optional built-in variable +24V bias tee provides a practical solution for measuring the gain of amplifiers. Two power settings for 2-port measurement optimizes measurement capabilities for both gain and isolation measurements. Residual directivity exceeding 42 dB for the entire frequency range minimizes directivity errors providing accurate measurements over the entire frequency range. Optional Power monitor can be used for broadband power measurements using external precision detectors designed to minimize mismatch errors. User menu can be set to Field Menu or VNA menu providing flexibility for viewing measurements as Return Loss/S11 Log Mag or 2-Port Gain/S21 Log Magnitude.