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BELL SYSTEM TECHNICAL JOURNAL 



ception in the second channel is shown by (6) in which the vector 1 represents 

 the directly transmitted signal component (or sideband on d-c), 2 and 3 



DETECTED COMPONENTS 



(a) RECEIVED IN CHANNEL I 



(b) RECEIVED IN CHANNEL 2 

 ^216°^ 



(C) RECEIVED IN CHANNEL 3 

 288° _Jl 



(e) RECEIVED IN CHANNEL 5 



(d) RECEIVED IN CHANNEL 4 



RESULTANT 

 CROSSTALK 

 25 DB BELOW 

 RESULTANT IN (a) 



(-0.5 DB)^ 



(f ) EFFECT OF AMPLITUDE AND 

 PHASE ERRORS ON RESULTANT 

 OF COMPONENTS RECEIVED 

 IN CHANNEL 2 



Fig. 4 — Graphical representation of operation of time division multiplex system. Signal 

 transmitted in channel 1 of 5-channel 5-sideband system 



represent the detected components from the upper and lower side frequencies 

 associated with the fundamental switching frequency, and 4 and 5 the 

 components resulting from the upper and lower side frequencies of the 



