To carry out the automatic test of equipment with the use of control function and monitoring function of ATI, and self diagnostic function of equipment concerned.
| This function applied | Before (off-board test) | |
|---|---|---|
| Working for preparation (cabling, etc.) | few | many |
| Support to trains in variety | easy | difficult |
| Limitation of test track | unlimited | limited |
To retain the fail-safe transmission function without the increase of delay time of command signal transmission, even if a failure occurs in the primary transmission network.
The transmission system of command signals becomes dual system , then the transmission system of monitoring signals also become dual system at the same time.
