Measurement of telegraph transmission

Abstract

Synopsis.-Various factors contribute to impair the quality to distort the telegraph signals so that the received signals are not a of telegraph signals. For instance, there may be interfering true copy of those transmitted. The paper describes methods for currents either induced in the circuit or brought in by conduction, measuring this distortion and for analyzing the results so as to the proportioning of the circuit elements may be imperfect or batteries indicate the nature and extent of the impairment and its probable and relays may be out of adjustment. The result in any case is cause.