Ultrawave8G synthesizer per channel has multiple benefits in RF testing, There are 2 methods of sourcing multi-tone signal using ultrawave8G, 2 channel combining mode and Single source  MultiTone(SSMT) which is the new introduced for RF instruments in UltraFLEXplus. IG-XL generates single source multitone using the modulated source when you use the normal multitone VBT programming model, however for the 2 channel combine mode, it uses an internal combiner to combine 2 adjacent channels in same module. Through simple mode enable and disable, SSMT and 2-channel share same IGXL coding.  Compare to 2 channel mode SSMT has higher test parallel efficiency with comparable high performance. Teradyne Result Viewer (TRV) is a Data Application Server (DAS) that receives data events from the Test Event Messaging for Semiconductors (TEMS) protocol. TRV tool has ability to perform immediate statistical analysis in an interactive engineering environment; more efficient method to view/filter results compared to using ASCII files; TRV tool also has ability to focus on particular sites, tests or types of tests from the total data collection online and offline. It provides a graphical display of health and stability of full test program or particular test. This paper will use TRV tool to  analyze UW8G 2 multi-tone mode with  above programming