Technical data

Configuring time synchronization
5.4 Commissioning a central plant clock
Time synchronization (V7.1)
70 Function Manual, 03/2009, A5E01216578-01
Wiring
The following figure shows how to wire the SICLOCK TC 400 to a DCF 77 receiver:
;






0D[P
6,&/2&.7&
6,&/2&.'&)56
5$',2&/2&.$
5$',2&/2&.$
5$',2&/2&.%
5$',2&/2&.*1'
5$',2&/2&.%
Align the antenna
To optimize the alignment of your DCF 77 receiver, proceed as follows:
1. Align the DCF 77 receiver so that the control LED flashes at intervals of one second.
2. Check that the DCF 77 receiver is on the side of your building facing Frankfurt.
Note
If you are unable to receive a constant time signal, please note the following rules:
• Maintain as great a distance as possible between the DCF 77 receiver and PCs,
monitors, laser printers, motors, motorized operating mechanisms, or similar sources
of interference.
• Keep the DCF 77 receiver away from metal surfaces and steel-reinforced concrete.
Further information
● Additional information on the connection and optimal alignment of the DCF 77 receiver
can be found in the Operating Instructions for the DCF 77 receiver.
● Additional information on connecting a central plant clock can be found in the Operating
Instructions for the central plant clock.