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Xinjie Jia teaches you how to choose a thin film switch tester

Release time:

2023-06-06 08:51

What precautions should be taken when choosing a thin film switch tester? Xiaomian Xin Jiejia teaches you how to choose a thin film switch tester. Here are some tips:
(1) Can the instrument test for leakage.
(2) Can the instrument test the resistance value (usually the upper limit of the resistance value is specified for thin film switches).
(3) Testing the range of leakage (this is also very important as it is too small to meet the customer's requirements).
(4) Can you indicate the location and specific parameters of the defect (which is very convenient for analyzing problems and finding the cause).
(5) Does the instrument have a statistical function (this is also a practical function, there is no need to test another one and count the number of times with a counting machine).
(6) Test the number of interface lines (depending on the product selection, there are generally 16 bit and 32 bit options. If you are producing products with export lines smaller than 16 bit, you can choose a 16 bit option. It is recommended to choose a 32 bit option, as products with export lines larger than 16 bit can also be tested in the future.).
(7) Testing speed (for today's relatively high labor costs, its importance goes without saying. Faster testing speeds result in higher instrument prices, but it can be earned back in just one or two months by saving on labor costs).
(8) Ease of operation (this may not seem important, but it is actually crucial. Instruments with Chinese display should be used, and the operation should be simple. Testers can easily understand it at a glance, and ordinary people can test it with their hands. There is no need to hire specialized maintenance personnel or computer maintenance personnel).
(9) The range of resistance values tested by the instrument (this is very important. For silver paste circuits, the resistance value is required to be within 1K. If some orders need to be printed with pure carbon paste, the resistance value should be above 100K. Previously, popular thin film switches used in dance machines generally had pure carbon paste printing brushes).
(10) The volume of the instrument (smaller is better when achieving the same function. The smaller the volume, it means that the instrument can be directly placed on the workbench of the assembly line for operation, which can reduce the moving of products due to testing, increase labor costs and material losses.).
(11) Does the instrument have some additional special functions, such as semi-finished product testing, leakage testing only, fast testing, and support for measurement? These functions may not be commonly used, but they can play a great role in critical times, which is related to whether it can be shipped in a timely manner. For example, when testing the finished product, many defects were found, which were analyzed to be caused by short circuits and open circuits on the upper chip, but it is difficult to detect them visually. In this case, the semi-finished product testing function can be used to only test the semi-finished product, selecting the defective products and avoiding wasting time on rework after assembly into the finished product.
(12) Usage and maintenance costs For example, testing instruments with computer monitors are driven by software, which inevitably leads to some common computer problems such as viruses, crashes, and slow startup. Maintaining a computer is not something that ordinary people can maintain, and the cost of not seeing it will increase significantly. Additionally, using a testing instrument with a computer consumes a significant amount of electricity, with a typical computer costing 300W

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