The Anritsu Site Master S331D and S332D covering the 25 MHz to 4000 MHz are designed to accurately locate and identify RF cable feed-line and antenna system faults. These models are ideally suited for any experience level user in installing, commissioning, troubleshooting and maintaining todays wireless systems infrastructures including VHF, broadcasting, paging, cellular, PCS/GSM, 3G, ISM, WLAN and WLL applications. S331D measurement capability includes precision Return Loss/SWR, Cable Loss and Distance-To-Fault (DTF), and optional T1/E1 and power meter measurements. Patented RF interference rejection enables accurate, repeatable measurements in the presence of high RF activity. Data analysis software enables assessment of system trends, problems, and performance in addition to professional report generation.