Siemens SIMEAS Q80 Operating Instruction page 119

10.3.2.3 NTP-time via LAN
NTP-time via LAN: Devices are synchronized with each other and synchronized to absolute NTP time.
10.3.3 Separate synchronization of all devices
If connection between devices via a Sync line is not possible, then each device can be synchronized separately to an
external clock.
10.3.3.1 GPS-time
GPS time: Each device is synchronized to absolute GPS time and thus all devices are mutually synchronized.
10.3.3.2 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 TTL level.
Master device synchronized by NTP and slave devices
Example for synchronization with GPS for stand alone devices
Example for synchronization with DCF77 for stand alone devices
Connections and Conditioning
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 09.02.2011
E-43