Measurements During Development - LANGER EMV-Technik OB 100 set User Manual

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LANGER
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EMV-Technik
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9.2. Measurements during Development

During development, it can be helpful to perform disturbance emission or disturbance immunity
measurements without LIN or CAN lines connected - for example, to determine whether the
functional error during coupling directly affects a CAN signal and a subsequent error occurs, or
whether coupling into another structure of the DUT causes the error.
If a signal connection is required to control or monitor the DUT in this case, it is necessary to use a
CAN 100 or LIN 100 sensor in conjunction with an Opto-Box (Figure 7). If the sensor is used as
described in section 10.3, it is possible to communicate with the DUT without any metallic signal
line.
Figure 7: One sensor with one Opto-Box for data transmission without LIN/CAN bus cable
In order to prevent the propagation of interference pulses via the signal lines when performing
immunity tests during development, e.g. with ESD or burst, the Opto-Box can be used for galvanic
isolation. If the test set-up is implemented with the aid of a metal surface, the Opto-Box can also be
connected to the metal surface as in Figure 8.
Figure 8: Opto-Box connected with metal surface
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OB 100 set