SBAA548A April 2022 – May 2022 ADS8588S , ADS8681 , ADS8686S , ADS8688 , ADS8688A
Figure 2-3 shows the general setup of the ADS8686S EMC test board for EMC testing. A software script is developed to configure the running parameters on a laptop, such as serial peripheral interface (SPI), clock frequency configuration, ADC mode selection, data capture and analysis, data monitoring and exporting for post-processing. In each EMC test, the data is captured by the software and the PHI controller to verify the test system and the equipment under test (EUT) before the EMC event. The data is continuously monitored during the EMC test, and the data is captured to check the EUT functionality after the EMC test.
The PHI controller card provides a necessary communication interface between the ADS8686S EMC test board and the laptop over a USB 2.0 (or higher) interface for digital input and output. An optical transceiver pair (bit-driver) is used between the laptop and the PHI controller card to isolate the harsh transient signals and test environment and provide an additional layer of protection for the user equipment.