[程序功能]：

本程序提供了自动侦测行场频的简单例子。





[适用的采集卡类型]:

本程序适用于Levin M20/RGB20/VGA卡。





[操作步骤]：

打开应用程序后，就已经完成了初始化，能看到视频图像。



点击“视频源侦测”按钮，弹出“视频源参数测试”对话框。可看到当前的采集图像大小，点击“测试”按钮，开始侦测输入信号，能看到当前的测得视频源参数。点击“确定”按钮，将自动侦测的参数保存到Ini文件中去，即以所侦测的参数来刷新视频图像的显示。



最后，要结束程序，请按“退出”按钮。-[Program features]: This procedure provides automatic detection of horizontal and vertical frequency of the simple example. [Applicable to the acquisition card type]: This procedure applies to Levin M20/RGB20/VGA card. [Steps]: Open the application process, you have completed the initialization, could see video images. Click on " video source detected"　button, pop-up " video test source parameters"　dialog box. You can see the collection of the current image size, click on " Test"　button, start to detect the input signal be able to see the current video source parameters measured. Click " OK"　button, will automatically detect the parameters saved to the Ini file to go, that is, the detection parameters to refresh the video image display. Finally, to end the program, please click " Exit"　button.