On some transmitters, such as rosemount 3051s, there are options to do a partial proof test and a comprehensive proof test These faults cannot be identified by the automatic diagnostics The steps to do that are explained in the device's safety.
Reference Guide to Optical Transceiver Testing | by Aria Zhu | Medium
Proof testing supports early detection of failure, so that failure can be attended to as quickly as possible and maintain the sis functionality much more reliable.
The purpose of proof testing is to detect the failures within the transmitter that are not detected by the regular diagnostics of the transmitter
Of main concern are undetected failures that. In summary, maintaining effective proof test coverage is critical for safety in industrial processes By adhering to the guidelines set forth in iec 61511 and implementing these best. Learn how proof testing strengthens sif reliability, reduces pfdavg, and supports sil compliance under iec 61511
The real concern lies with dangerous undetectable failures
