16x9 Aspect Ratio Set-Up    *The THX Optimizer test signals displayed are for reference use only. Be sure to check your equipment's operations manual or refer to your service technician before making any internal adjustments on your monitor. This test looks similar to the 4:3 Aspect Ratio test, but the 16:9 Aspect Ratio test pattern is used to make sure that your DVD player is set to the proper display mode. If you are using a 4:3 monitor, this test is primarily for the DVD player, but you can still use it to check your monitor's performance (like the 4:3 Aspect Ratio test). If you are using a 16:9 monitor, you can also use this test to check your monitor's ability to display 16:9 video. If you are watching a non-anamorphic feature (for example, a Pan-Scan feature or a letterboxed feature that was transferred for a 4:3 television), you can skip this test pattern. For 4:3 television sets: Your DVD player should be set to display the 4:3 mode. For today's technology, it will not matter if your DVD player is set for 4:3 letterbox or 4:3 pan-scan. Consult your DVD player owner's manual for more information. Widescreen anamorphic movies viewed on a standard 4:3 television must "letterbox" the image in order to display the proper aspect ratio. The DVD player most often achieves this by removing the extra lines of resolution so that the proper number of lines remain. By removing these lines, the anamorphic image is "unsqueezed" to display the proper number of vertical lines for the horizontal width of the television and black mattes are added above and below the image. For this test, the test pattern with the circle will be "letterboxed" and you should see a round circle surrounded by two rectangles (see Figures 13-14).   For 16:9 television sets: Some monitors offer sizing controls that first require an adjustment of the 4:3 mode. Be sure to check and verify the 4:3 circle before making any adjustments to the 16:9 mode. Then, for this test set your DVD player to display the 16:9 mode and set your monitor to display widescreen. Consult your DVD player owner's manual for more information. You should see a round circle if your DVD player is set-up correctly for 16:9 display (see Figures 15-17). In addition to the circle displayed, you will find two boxes that can be used to check the video monitor's centering, both horizontally and vertically.   Check with your service technician before attempting to make any adjustments on you home theater equipment. Although you may not fix any existing display errors without the help of a service technician, it is important to provide enough information to the service technician so they may arrive prepared.		16:9的宽高比检验   *THX Optimizer 测试信号仅供参考。在调节你显示器之前，请先核对参考手册或求助于技术支持。 这项测试看起来和4:3的宽高比检验十分相似，但16:9的宽高比检验 主要是用来测试你的DVD播放系统是否是设置了正确的显示模式。在4:3的显示器上，这项测试主要是用来调整DVD播放机的。在16:9的显示器上，你可以用这个信号来判断显示器显示16:9信号的能力。 如果你看用非变形的功能看片（比如在4:3电视上用Pan-Scan 或letterbox 功能），你可以跳过这项测试。 4:3电视调整步骤： 你的DVD播放机应该设置为4:3的显示模式。现在的DVD设置成4:3 letterbox或4:3 pan-scan是不会有任何问题的，否则请联系你的服务商。为了在4:3的电视上维持合适的比例，变形宽银幕的电影的电影必须letterbox-变为信封模式。通常DVD播放机会移除多余的扫描线，留下合适的扫描线。这时变形的图象被解缩到合适的水平和垂直分辨率，同时在画面上下加上黑条。这项测试应该显示为“信封”和两个矩形中的一个正圆。（参见附图 13-14）   16:9电视调整步骤： 一些显示器的变形控制需要先在4:3的模式下校准。确定在16:9模式调整前已经在4:3模式下校准圆形图案。然后把DVD播放机设置为16;9模式，显示器设置为宽银幕模式。如果有问题请联系你的服务商。设置正确时应该显示为一个正圆和两个矩形，矩形可以用来矫正显示器的水平和垂直中心。（参见附图 13-14） 当你对你的设备调节之前，请先和你的服务商联系。虽然你修理不了任何你发现的显示问题，但重要的是，你可以提供服务商足够的信息，让他们能有备而来。
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