ELECTROMAGNETIC COMPATIBILITY TESTING
Tests to ensure immunity from radio waves
The immunity of the electronics is tested by subjecting the components to frequencies of up to 2 GHz. In the operating environment, these electromagnetic fields can be generated by external devices such as cellular or cordless phones.
Any electronics not immune to these disturbances are liable to general malfunctions and incorrect readings of the signals from analogue sensors.
Tests to ensure immunity from radio waves conducted over cables
Tests are performed to ensure immunity to the injection of RF signals on the power supply or signal cables. This test simulates interference caused, for example, by the operation of inverters or other electronic boards.
These disturbances are normally responsible for incorrect readings of analogue values (such as temperature, humidity and pressure), interfering with the correct operation of the system.
Test to ensure immunity from electrostatic discharges generated by a dedicated device. The human body or insulating materials can build up electrostatic charges which, when they come into contact with the machine’s metal panels, can lead to a discharge of static electricity which can prejudice the correct operation of the electronics.
These discharges can lead to operating parameters being deleted, displays malfunctioning, or in some cases, even damage to parts of the IC.
Simulations are performed of inductive loads (motors, contactors, relays) being switched on and off by injecting disturbances directly into the power supply cable or signal cables.
High-energy pulses are sent to the machine. This test simulates, for example, a lightning strike in proximity to the power supply network, or faults in large machines operating on the same network.
Emissions testing of radio frequencies carried over the power cables
The radio frequencies emitted by the electronics on the power supply cable are measured.
Power supply fluctuation testing
Tests to determine immunity to voltage drops, brownouts and supply voltage variations. These events can lead to malfunctions in the electronics and the loss of data and operating parameters.
Micro Systems electronics are designed to be immune to this kind of damage and to resume operation automatically once the supply voltage has been restored.
Radio frequency emissions testing
The radio frequencies emitted by the electronics are assessed.
Climate Chamber Testing
In order to ensure that our products will withstand all ambient conditions, we perform further tests inside a climate chamber which subjects them from temperatures ranging from -20°C to +70°C with humidity between 10 and 90%.
The operating temperature of the board’s various components influences their average lifetime.
Excessively high temperatures can significantly reduce the lifespan of the components and compromise their general reliability.
Thermal analysis highlights the system components with the highest operating temperatures. Subsequent analysis of the board’s design checks that these temperatures are within the design operating range.