PCB more intensive, higher bus speed and analog RF circuits, etc. the test presents unprecedented challenges and functional testing in this environment need to carefully designed, well thought out test method and appropriate tools to provide credible test results.
In dealing with the fixture suppliers, to remember these issues, but also to think of where the product will be manufactured, which is a lot of test engineers will ignore the place. For example, we assume that the test engineer is in California, the United States, while the product is manufactured in Thailand. Test Engineer will think products require expensive automated fixture, because in California house prices high, tester as little as possible, but also to use automated fixture to reduce the employment of high wage, high - tech operator. But in Thailand, these two problems do not exist, so that artificial to solve these problems more expensive, because the labor cost is very low, the premium is also very cheap, large plant is not a problem. So sometimes the first class equipment in some countries may not be welcome.
Technical level in the high density of UUT, if the need for calibration or diagnosis is likely to need for exploration by manual, which is due to bed contact constraints and testing faster (probe test the UUT can be collected quickly data rather than information feedback to the edge connector) and other reasons, so the requirement by the operator exploration UUT test points. Wherever you are, you should make sure that the test points are clearly marked.

The probe type and ordinary operators should also pay attention to, need to include:
The probe is greater than the test point? The probe has the danger of short circuit and damage to UUT? The operator of electric shock hazard?
Each operator can quickly find the test points and check? Test points are very easy to identify it?
The operator will probe in the test points according to how long will it take to get an accurate reading? If the time is too long, in the small test area will be some trouble, such as the hand of the operator due to the test time is too long and the slide, it is proposed to expand the test area in order to avoid this problem.
Considering the above test engineer should be re evaluated the type of probe test, test file modifications to better identify the position of test point out, or even change the requirements of operators.