Front panel, Pilot lamps – Meinberg PZF510 User Manual
Page 8

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Front panel
Pilot lamps
The 'Feld'-LED is switched on if a DCF-signal with at least minimum field strength
needed for the correlation receiption is detected at the input of the receiver.
The 'Syn.'-LED indicates that the autocorrelation coefficient decreases beyond 52%
and correct receiption is not possible therefore. This happens if a strong interferer
within the bandwidth of the receiver is present or the transmitter is switched of.
If the 'Freil.'-LED is on, it was not possible to synchronize the internal realtime
clock to DCF-time. This condition occures for at most two minutes after switching on
the PZF510, because two DCF-telegrams are checked for plausibility before the data is
taken over. Short disturbance of receiption can cause this state too.