Title :
The level tracer, an instrument for time saving and better measurement in the speech band
Author :
Niedereder, Martin ; Sanders, Benjamin T.
Author_Institution :
Siemens und Halske AG, Munich, Germany
Abstract :
The development and construction of a visual voice-frequency transmission-measuring set is described, and a short summary of its applications is included. The instrument provides for the display of measurements of level, impedance, return loss, impedance comparison and level comparison on the face of a CRT (cathode-ray tube) as a function of frequency. The values in db (decibels) or ohms are read directly from a calibrated graticle. The instrument described is the latest of a series whose initial development was begun in 1941.
Keywords :
Calibration; Generators; Impedance; Instruments; Oscillators; Time frequency analysis;
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
DOI :
10.1109/TCE.1962.6373177
