Arrangements for displaying electric variables or waveforms

Child Classifications

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• G01R 13/02 for displaying measured electric variables in digital form
• G01R 13/04 for producing permanent records
• G01R 13/20 Cathode-ray oscilloscopes
• G01R 13/36 using length of glow discharge, e.g. glowlight oscilloscopes
• G01R 13/38 using the steady or oscillatory displacement of a light beam by an electromechanical measuring system
• G01R 13/40 using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect
• G01R 13/42 Instruments using length of spark discharge, e.g. by measuring maximum separation of electrodes to produce spark