differential manchester encoding

Differential Manchester encoding is a method of encoding data in which (a) data and clock signals are combined to form a single self-synchronizing data stream, (b) one of the two bits, i.e., "0" or "1", is represented by no transition at the beginning of a pulse period and a transition in either direction at the midpoint of a pulse period, and (c) the other is represented by a transition at the beginning of a pulse period and a transition at the midpoint of the pulse period. A related method is Manchester encoding in which transitions always occur in the same directions for the bit encodings 0 and 1. Note: In differential Manchester encoding, if a "1" is represented by one transition, a "0" is represented by two transitions, and vice versa. Source: from Federal Standard 1037C

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dbm
dbrn
data circuit terminating equipment
decollimation
decrypt
degradation
degree of isochronous distortion
degree of start stop distortion
dejitterizer
delay
delay encoding

delay line
delta modulation
demand assignment
demand factor
demand load
desensitation
design objective
detector
deterministic routing
d 4
pulse dialing

dial up
dielectric
dielectric strength
differential encoding
diffraction grating
digital access and cross connect system
digital filter
digital milliwatt
digital multiplex hierarchy
digital signal 0
digital subscriber line

digital transmission group
digitizer
digroup
direct access
direct connect
direct distance dialing
directional coupler
directive gain
direct sequence spread spectrum
disengagement originator
dispersion limited operation