<inter-supply-con-vehicle-test>
During the test in vehicle the built-in component is exposed to interferences which are originated by switching known interference sources in the wiring harness. Following specifications can be made for the description of the test:
 
Test pulse
Contrary to the laboratory tests (<inter-supply-con-lab-test>), here pulses generated by known interference sources in the vehicle are coupled into. These are characteristic pulses which correspond the pulses 1 to 5 (see table Representation example for interference strength requirements: concerning interferences by conduction in power supply conductions, test pulse 1). If the test pulse is described by detailed parameters, an adaptation of the parameter values corresponding to the test pulse, to the pulses actually existing in the vehicle is possible.
 
Severity level and corresponding peak voltage for the test pulse.
Severity levels defined in [Determination of severity levels for test pulses by means of pulse amplitudes according to DIN 40839 part 1] can be chosen. The specification of the severity level is only required in case of standard pulses.
 
Test voltage
Vehicle network voltage applied during the test. It will only be defined if it deviates from the standard test voltage.
 
Minimum test amount
The minimum test amount is defined by the number of test pulses or by the duration of the test.
 
Interference source
The known component which generates the test pulse.
 
Operating state
The operating state defines the state of the system at which the test is performed. If the test is to be performed with various operating states, these can be grouped.
 
Function state
The assignment of a function state to the test is accomplished by a code letter (A...E).
 
Fault description
The failure mode of the system will be described in textual form, in addition to the function state (if it is not equal to A).
 
Additional specifications
Apart from the a.m. specifications, it is always possible to give additional specifications for a test. These include, e.g., a test temperature which differs from general specifications, the test set-up and further specifications which have not been defined yet.
Figure 32: Structure of vehicle test
Example for content:
See example in chapter 9.4.1.1.1.1. Laboratory tests.