GENERAL

Reference: IEEE Standard 158, Electron Tubes, Methods of Testing, Part 8, Camera Tubes.

The results of any test on a camera tube that utilizes magnetic deflection or focus or alignment are dependent on the design of the components used to produce the magnetic fields. The subject of any test must be considered to be the combination of the tube and these field-producing components. These components must be specified in the description of the test.

Considerable care is required in the design, construction, adjustment, and operation of test equipment in order that the results obtained will be characteristic of the camera tube only and further, that the results will be measurements which can be reproduced on a test equipment of different design. Ordinarily the practical accuracy of these tests is limited to somewhere between 1 and 10%.