Table of Contents
Gathering Sufficient Information
When they start an investigation process, they hardly have any information about the equipment affected by EMI. They gather as many details on the product as possible to make the investigation process convenient. They sit with the designers and manufacturers of every single part of the equipment to collect all the facts available. This is called the power quality audit which is a sanctioned program to start with the investigation. The standard practice is to start by creating a questionnaire that involves direct questions to the manufacturers and start knowing in-depth about the problem.
Planning the Investigation Systematically
Once all the information have been collected, the next decision that has to be taken is whether the investigation is going to focus on the radiated environment or the conducted environment. The radiated environment is the space inside and outside the equipment, and the conducted environment represents the metallic and electronic structure within the equipment. Popularly, the EMI problems are mostly found to be associated with the radiated environment. Hence, the safest way is to start from there.
Choosing the Arsenal Well
When you start detecting the radiations, you need to work with a complete range of equipment that includes AM radio, frequency field-strength meters, spectrum analyzers, and also specialized antennas. When you are specially dealing with the conducted environment, your measuring instruments get more complicated and expensive as well. At times, these instruments get too heavy to carry from one place to another. Along with this, there are design specifications for each of the antennas you use. Keep all these measures in mind before you select your tools.
Investigating EMI Problems
Even those who have sufficient experience in investigating EMI problems face difficulties while tracking down the source of EMI. As and when the investigation progresses, there are clues added to it, and each one of these clues will lead to all the probable causes of EMI problems. A lot of the investigation process depends on the fact that how the affected equipment operates. There are a few types of electronic equipment which have indicators, and display meters indicating the time and place where the equipment is being affected by the EMI source.
Locating the Source As Early As Possible
Once the entire investigation is complete, and all data is assembled, a pattern will emerge. The frequency of each of the components can be measured with an analyzer for finding out the source. The source of EMI may not be found quickly, but if found in no time, rushing into it can be dangerous. Therefore, sufficient time must be spent on reviewing the data thoroughly and learning more about the EMI problem from the data collected or the source identified.
Selecting a Solution That Can Eradicate the Problem Well
When it comes to choosing an EMI solution for the equipment, you need to keep three factors in mind – the facility’s operation, the mode of operation of the affected equipment, and also the electromagnetic environment in which the equipment operates. There is always more than one solution available; one should always check out the performance record of all the solutions along with the installation cost and safety measures. Also while installing any EMI solution, one must sit with the facility management to ensure their mode of operation doesn’t get affected. Planning to roll out your product soon? You can choose shield, filters, and conductive elastomer products to solve all radiation issues. Depending on the circumstances of EMI problems, you need to pick and choose your solution. While doing so, take help of the mathematical modeling that helps you ease out the great expensive remedies. Make your brain work to protect your equipment from the harmful EMI radiations.