Siemens Plant Central Clock TC100 - Manual (Page 41)

Connection
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SICLOCK ® TC100 Operating Instructions
6.3.4 Third-party systems
Third-party systems can also be used for external synchronization of the
SICLOCK TC100 if the following conditions are fulfilled.
Prerequisites
• Active radio clock signal with 20mA rated current
• Supported signals:
− Demodulated DCF77
− Serial:
Meinberg format (time-zone dependent),
Meinberg format (time-zone independent),
NMEA (0183/ZDA)
Functional check
The parameter /Inputs/Input 1/Status (0.20.02) must change to "Meinberg",
"NMEA" or "DCF77" after about three minutes reception.