11/22/2023 0 Comments Automotive emc test equipmentDigital Input - Non-dynamic (Steady State I/O).MCU Analog Input is set to nominal operating value/condition for the specified test mode with the value reported either directly via the DUT communications bus or, indirectly through the DUT monitoring the input and changing the state of an output in a known, pre-determined manner. These functions are based on internal Printed Circuit Board (PCB) operating conditions and are not expected toīe controlled or changed during testing it is not necessary to force a mid-value for these inputs as with vehicle harness interface I/O.Direct monitoring using attachments leads to external monitoring devices is not allowed. Module to Vehicle Interface Connector and User Interface I/Oįor such internal I/O (not connected to Vehicle I/O connector), the monitoring must be done via communication bus data or via indirect methods. Monitoring functional status via DUT scheduled or periodic broadcast messges is not recommended. changes to PWM duty cycle, monitoring LED flash rate, inadvertent status change).ģ) DUT monitored data, I/O status values, analog input voltages, operating state are queried via parameter requests to ensure bi-directional communication during RF Immunity. Using production intent software would extend the DUT activation dwell time beyond 10 seconds such that long duation functions and/or sequential activation of various functions becomes possible.Ģ) DUT's state and fault conditions are reported directly via communication bus or indirectly via cyclying the outputs (e.g. The use of specialized DUT software is allowed provided that:ġ) SW diagnostic timers are set to minimum detection values such that during the maximum 2-second RF exposure time all DUT response error flags are being captured and reported. The use of specialized DUT software is recommended since the production software may not be efficient enough to otimize the EMC testing time. The use of DUT production software should not be mandatory since may not be finalized prior to validation. Following a successful EMC validation, the DUT software may be subject to multipe updates and upgrades to serve the original hardware design w/o altering the outcome of overall product EMC validation.ĭUT's software is used to exercise and monitor I/O lines and functions. The goal is to EMC validate DUT's Hardware Design assuming that DUT's Software was developed to serve the DUT's Hardware.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |