Serial Triggering and Decoding Options Protocols such as I2 C or SPI are frequently used for transferring control messages between integrated circuits. The R&S®ScopeRider is the first isolated handheld digital oscilloscope with trigger and decode capability for in-depth troubleshooting. Triggering on protocol events or data enables selective acquisition of relevant events, data and signals. Two serial triggering and decoding options are available for the ScopeRider RTH1002 (125-9462) and RTH1004 (125-9463) handheld digital oscilloscopes. I2C/SPI RTH-K1 Serial Triggering and Decoding - RS Stock No. 125-9473 UART/RS-232/RS-422/RS-485 RTH-K2 Serial Triggering and Decoding - RS Stock No. 125-9474