544 



BELL SYSTEM TECHNICAL JOURNAL 



this end has been described by Herman.'^ His description, particu- 

 larly his Fig. 2, should make it unnecessary to describe it here. 



Some Results Obtained by Various Methods of Measurement 



In the accompanying figures results will be given in graphical form 

 of various results which have been obtained from using the measuring 



600 



«n 

 a 



z 

 o 

 o ■ 

 u 



5 

 z 



< 



u 



Q 

 Ul 



a. 

 O 



_] 



> 



z 



UI 



400 



800 1200 



CYCLES PER SECOND 



1600 



2000 



Fig. 9 — Results of impedance measurements on phase corrector for 200 miles of 19-ga. 



H-174 side circuit. 



devices described above on actual telephone circuits or networks 

 designed to be associated with them. The values added to the meas- 



" " Bridge for Measuring Small Time Intervals," J. Herman, B. S. T. J., \'ol. \'1I, 

 p. i^i, 1928; particularly application No. 2, p. 349. 



