efficiency factor

Efficiency factor: In data communications, the ratio of (a) the time to transmit a text automatically at a specified modulation rate to (b) the time actually required to receive the same text at a specified maximum error rate. All of the communication facilities are assumed to be in the normal condition of adjustment and operation. Telegraph communications may have different temporal efficiency factors for the two directions of transmission. The practical conditions of measurement should be specified, especially the duration of the measurement.

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dod master clock
double ended synchronization
double sideband reduced carrier transmission
double sideband suppressed carrier transmission
doubly clad fiber
d region
drift
drop (liquid)
drop and insert
dropout
dual access

dual in line package
duct
duobinary signal
duplexer
duty cycle
dynamic range
earth terminal complex
echo (mythology)
effective data transfer rate
effective earth radius
effective height

effective input noise temperature
effective mode volume
effective power
effective transmission rate
eia interface
electrical length
electric field
electromagnetic compatibility
electromagnetic environment
electromagnetic interference control
electromagnetic pulse

electromagnetic radiation hazard
electromagnetic survivability
electronic deception
electronic switching system
electronic warfare support measures
electro optic effect
electro optic modulator
electro optics
elliptical polarization
emphasis (telecommunications)
end distortion