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non return to zero space (NRZ-S)

The bivalent encoding method Non Return to Zero Space( NRZ-S), in contrast to Non Return to Zero Mark( NRZ-M), works with the space when the digital signal is 0.

NRZ-S coding

NRZ-S coding

While NRZ-M changes the level of the NRZ-M signal on a digital 1, NRZ-S uses the 0 signal to change the level state. At each 0, the NRZ-S signal switches from one level to the other. If the level is previously High, it switches to Low on a digital 0 and vice versa. With a digital 1, the state remains unchanged. With NRZ-S coding, additional level changes are generated for synchronization with long 0 sequences.

Informations:
Englisch: non return to zero space - NRZ-S
Updated at: 03.05.2009
#Words: 98
Links: encoding, method, non return to zero (NRZ), contrast, non return to zero mark (NRZ-M)
Translations: DE
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