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THS 8200黑屏问题

Zhaobin Zhang
Prodigy 10 points
Other Parts Discussed in Thread: THS8200-EP

AM335x + Altera Cyclone IV

VGA在未加负载时正常，带伺服时会黑屏，用10m的VGA屏蔽线缆做雷击浪涌测试只能承受几百伏的干扰，用示波器查看场信号和行信号纹波非常大，信号几本被淹没。请问在THS 8200的基础上有没有可以对两个信号进行处理的策略？还有ths8200-ep和ths 8200有什么改进之处，有没有人用过？