xDSL / PDH Analyzer mainly used for comprehensive transmission test of SDH/PDH network and equipment and widely applied in the R&D, manufacture, acceptance inspection, performance monitoring, maintenance and measuring of networks and equipment. The instrument SunmaFiber provided can insert and measure varieties of errors and alarms in PDH and SDH systems (including on-line and off-line test), perform performance analysis on various errors as well as modulate and test jitter signals at a max. test rate of 2488MHz (STM16).