An event system distributes all timing signals to all parts of accelerator by way of broadcast. It can satisfy all requests of SSRF main timing system with clear network

high cost effectiveness

advanced technology

good isolation

easy update and expandability. In the paper

it is introduced how to complete the basic tasks of SSRF main timing system with the event system. The test proved that the jitter between main voltage and 500 MHz RF source was 31.44 ps.