The mouse sample rate is often the focus of the player's purchase of the mouse, and it is also the key parameter of the manufacturer when releasing new products. Players are also often accustomed to calling it the "sensitivity" of the mouse, whose label unit is CPI, which means "number of sampling points per inch", which was later replaced by DPI, which is easier for consumers to understand and originates from the printing industry's precision measurement unit.
Generally speaking, the general manufacturer will mark the sample rate parameter of the mouse year on the mouse package, but occasionally there are individual cases, the manufacturer does not mark the mouse sample rate on the package, then some players may have the idea of measuring the sample rate of the mouse used, how to measure the mouse sensitivity (sample rate / DPI), it has become a concern of this part of the player.
Due to the current high mouse sampling rate, there is a slight gap between different manufacturers on the DPI of the label. Players manually test, usually can only test the approximate value of a mouse sample rate, and can only be used as a reference for the mouse to adjust the mouse after the player changes different mice when the manufacturer does not mark the mouse sensitivity (sample rate / DPI).
Mouse Sensitivity (DPI) Test
Since only approximations of mouse sensitivity (sample rate/DPI) can be tested, the well-known Adobe Photoshop can be chosen as the test software. The specific test method is as follows:
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1. First establish a side of the length is slightly less than the width of the display screen blank file, the width is not limited, (such as the display resolution of 1440×900, can establish a resolution of 1280 × any width of the blank picture), and then press CTRL + R key, display the image ruler, and then press and hold the space bar on the keyboard, click the right mouse button, select the "actual pixel" to make the picture pixels and the display pixels aligned.
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2. Prepare two mice, both connected to the computer. The edge of the mouse side to be measured is relatively aligned with the mouse pad, the mouse tail is leaning on an edge is relatively straight, with a certain weight (can ensure that the mouse will not move with the mouse, it is not recommended to use a ruler, because the general ruler is easy to move with the mouse at the same time) on the object, the edge of the object is perpendicular to the edge of the mouse pad, and then use another mouse, the mouse cursor moves a well-marked starting point (such as 50), the auxiliary mouse is removed to ensure that it will not affect the test.
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3. The use of the measured mouse along the edge of the straight object for horizontal movement, move 1000 pixels after stopping, measure the distance between the edge of the mouse and the edge of the mouse pad, the length of the obtained conversion into inches (1 inch = 25.4mm), and then divide by 1000 by the inch value, you can get the mouse sensitivity (sampling rate / DPI) value after multiple tests will accumulate the results, divided by the number of tests can find a more accurate approximation.
Through the above method, the approximate sensitivity (sample rate/DPI) value of the mouse can be calculated, and the player can estimate the nominal sensitivity (sample rate/DPI) of the mouse utilizing four values and five values. Since the measurement tools usually used by players usually have some errors, there may be large errors when testing the mouse with sensitivity (sample rate/DPI or above).