How to test when purchasing a monitor

Because the display is mainly for people with eyes, and eye vision has a direct correlation with the test project, is the main way to select a monitor. I think the only requirement for the monitor is to look at the eyes not tired, comfortable, so I locked the target in with the eyes have a direct effect on the performance. The direct function of the eyes of the display performance, the monitor is the most important menu performance.

1. Focus

Focusing ability is the indicator of the display, which reflects the concentration of the electron beam emitted by the picture tube. Good focus on the display of the bright spot fine and concentrated, poor performance for the edge divergence, the resulting characters, images are also very vague. It should be noted that the display will be more or less in the corner of the phenomenon of poor focus.

To test the focus ability of the display, can be in WIN98 DOS environment, with the space bar to move the cursor to the corner, type two uppercase "M" characters, and then watch two characters between the middle interval of the black line is clear, sharp, if the black line blurred, hair muddy, there is a problem of poor focus. It's best to compare it to another monitor when you're eyeballing it, so you can see the difference.

2. Water Ripple

Water ripple refers to the appearance of regular images, the resulting optical interference, for example, in the display of regular vertical lines, you can see the brightness with the position of the phenomenon of jagged. Of course, the same can be true when displaying horizontal lines or other regular images. In case of this situation, the better way is to reduce the screen resolution, or can be in front of the monitor * a low-frequency filter. And a better screen, so that this phenomenon can be minimized, so that users with a higher resolution of the display, to obtain a more detailed display.