The 141T Spectrum Analyzer System features absolute calibration of frequency and amplitude, high resolution and sensitivity, wide dynamic range, and simple to interpret display output. Four plug-in tuning sections utilize a wide range of plug-ins and permits measurements at frequencies ranging from 20Hz to 18GHz (to 40GHz with external mixer). Features an easy to read 8 x 10 cm variable persistence CRT with a writing rate from 0.2 s to 15 s. Maximum storage time is over 2 hours at reduced brightness. The modularity of this system allows you to keep pace with changing measurement requirements. Plug-ins sold separately.