Siemens SICAM Q80 Operating Instruction page 44

E-44 SICAM Q80 7KG8080
11.3.2.2 DCF77 time
DCF77 time: Each device is synchronized to absolute DCF77 time and thus all devices are mutually synchronized.
The antenna signal must be converted to by a decoder to 24 V level.
11.3.2.3 IRIG-B time
IRIG-B time: Each device is synchronized to absolute IRIG-B time and thus all devices are mutually synchronized
11.3.2.4 NTP time via LAN
NTP time via LAN: Each device is synchronized to absolute NTP time. The mutual synchronization is limited, since
NTP typically only achieves precision to a range of 10 ms to 20 ms.
Power Quality Recorder SICAM Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 12.01.2015
Example for synchronization with DCF77 for stand alone devices
Example for synchronization with IRIG-B for stand alone devices
Example for synchronization with NTP for stand alone devices