828 



BELL SYSTEM TECHNICAL JOURNAL 



when the network contained two branches, and the other when it 

 contained three. In both instances the appropriate reactance or 

 susceptance annuHing networks were found to be simple arms, similar 

 to the series or shunt branches of the remainder of the termination in 

 physical configuration. The complete networks are shown in Figs. 16 



I.I 



1.0 



0.9 



0.8 



-|n° 



X , 



o 



2 

 < 



y 0.6 

 < 



UJ 



cc 



a 

 z 

 < 



0.5 



N° 



UJ 



(J 



Z 

 < 



(0 



V) 

 ui 

 a. 



0.4 



0.3 



0.2 



+ 0.1 



-0. 



0.1 



0.2 



0.3 



0.4 



0.5 0.6 



X 



0.7 



0.8 



0.9 



1.0 



Fig. 19 — Impedance characteristic secured from tiie network of Fig. 17. 



and 17, where the final branches, Zo/iasX in Fig. 16, and iatZoX in Fig. 17 

 are the susceptance or reactance annulling networks. The values of 

 the various parameters are given in the following table. 



