Tektronix dpo4embd embedded serial triggering and analysis module tektronix dpo4embd p the tektronix dpo4embd is an embedded serial triggering and analysis module the module enables triggering on packet level information on i2c and spi buses as well as analytical tools such as digital views of the signal bus views packet decoding search tools and packet decode tables with time stamp information p tektronix dpo4embd application module