MEASUREMENT OF PHASE DISTORTION 549 



be found. In setting up any of these circuits for actual use, certain 

 precautions must be taken which will soon be evident. One particular 

 point that might be mentioned here is the fact that the phase distortion 

 introduced by the apparatus necessary for amplifiers and particularly 

 detectors varies somewhat with the amount of power being transmitted 

 through it, and this consideration must be given weight. 



Keys, switches, and such apparatus may be introduced for the 

 convenience of the tester. The amount of amplification and the 

 sensitivity of the detectors used depend somewhat on the accuracy 

 required of the measurement. 



