SYNCHRO Excite +: Service & maintenance manual - rev. 7.1
Page 3.10
3.4.2. HR (CHEST BELT)
This board manages the signal received from the Telemetric Transmitter (Chest Belt), used by the
user when exercising.
The Board receives the +5Vdc power supply, from the Display Board.
The Receiver Board, communicate with the Display Board in a negative logic mode. When the
Board is in stand-by, the signal is +5Vdc and for each heartbeat detected, generates a pulse of
+0Vdc, with a 30msec width signal.
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