The Site Master S331D measurement capability includes precision Return Loss/SWR (also known as VSWR, for Voltage Standing Wave Ratio), Cable Loss and optional T1/E1 and power meter measurements. Frequency Domain Reflectometry (FDR) provides superior Distance to Fault (DTF) analysis to locate faults accurately. The S332D includes all the features of our S331D plus spectrum analysis capability and optional power meter. These capabilities give field engineers and technicians the ability to easily identify and solve RF system problems such as coverage, interference, and other path related signal problems. The S332D spectrum analysis ranges from 100 kHz to 3 GHz with one button measurements - Field Strength, Occupied Bandwidth (OBW), Channel Power, Adjacent Channel Power Ratio (ACPR), Interference Analysis and Carrier-to-Interference ratio (C/I). Accurate, versatile, affordable, rugged and a true handheld at under 5 pounds, Site Master is ideally suited for field technicians of any experience level working with VHF, broadcasting, paging, cellular, PCS/GSM, 3G, ISM, WLAN and WLL applications.