The Field Master Pro MS2090A high-performance spectrum analyzer delivers the highest levels of RF performance available with a displayed average noise level (DANL) as low as -164 dBm and Third Order Intercept (TOI) of +20 dBm (typical). The pulse analyzer option 421 offers aerospace and defense engineers and technicians the ability to accurately measure pulses as narrow as 30 ns (typical, see note below) according to the IEEE 181-2011 specification.