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显象管必须在良好的真空环境中方能正常、长效地工作。(?)内真空环境的优劣是造成器件失效的一个重要因素。七十年代国内许多单位对显象管管内真空度的测量作了研究,并已制成专门的显象管含气量测量仪。目前各显象管厂利用成品仪器测量管内真空度,其测试条件如图一所示。尽管这种测试方式已采用多年。
The picture tube must work well and work well in a good vacuum environment. (?) The advantages and disadvantages of the vacuum environment is an important factor in the failure of the device. Many domestic units in the seventies made a study on the measurement of the degree of vacuum in the tube of the picture tube and made a special instrument for measuring the amount of air in the tube of the picture tube. At present, each tube plant uses the finished product to measure the degree of vacuum in the tube. The test conditions are shown in Figure 1. Although this test has been used for many years.