Dcf77-simulator, Function, Dcf77-simulator function – Meinberg GEN170TGP User Manual

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DCF77-Simulator

Function

Together with a DCF generator GEN170 the module generates an amplitude

modulated time signal which is compatible with the signal spread by the german long
wave transmitter DCF77.

The GEN170 generates TTL time marks which are 100msec in lenght if a binary "0"

is to be transmitted resp. 200msec if a binary "1" is transmitted. These time marks are
used by the SIM77PV4 to modulate the on board generated 77.5kHz sine wave carrier
according to the DCF77 transmitter.

This DCF77 compatible signal is accessible via four DC insulated outputs which can

be connected to all Meinberg AM radio clocks directly. The signal can be distributed by
additional antenna amplifiers/distributors.

Internal

Oscillator

Programmable

Logic Devive

power

clock

10MHz

1MHz

MOD_IN

PZF_IN

select

Modulator

77,5kHz

Power

DCF_OUT

This manual is related to the following products:

GEN170