A New Method of Removing Distortions Due to the Space Charge in Gas-Filled Cathode Ray Oscillograph Tubes

In gas-filled cathode ray oscillograph tubes, errors occur with electrostatic beam deflection in that there is a great drop in sensitivity near the undeflected position of the beam zero position. This nonlinear deflection causes distortion of the image in television and some error when the tube is used in making measurements. Because its action depends on the frequency, it does not exert a constant influence on the configuration of fluorescent screen images. Consequently it causes an error in measurement that cannot be easily controlled.