光点测试和会聚测试是验证CPT电子枪偏转线圈性能的重要手段之一。本文提出基于合理的测试方法、有效适当的测试设备 ,建立最佳的测试系统。针对光点测试和会聚测试系统中的各种设备 ,介绍它们的应用原理及应用效果 ,从而了解在测试CPT光点质量和会聚误差过程中测试系统的设计原理及设备配置原理 Spot test and convergence test is to verify the CPT gun deflection coil performance of an important means. In this paper, based on reasonable testing methods, effective and appropriate test equipment, the establishment of the best test system. Aiming at the various devices in the spot test and convergence test system, the application principles and application effects are introduced to understand the design principle and device configuration principle of the test system in testing CPT spot quality and convergence error