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Timing
Invert the rail power in fixed time slices and symmetric to voltage levels that have opposite polarity
„positiv“ signal equal to „negativ“ signal
except: stretched 0 bit to drive one analog loco on digital track
Zentral station Decoder
1 = 55 - 61 µs 1 = 52 - 64 µs
0 = 95 - 9900 µs 0 = 90 - 10000 µs
With this timing the Decoder must read the bits in every situation.