User Manual
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3.6  9115-AT Automotive Test Functions 
The 9115-AT power supply has a unique automotive testing feature built-in that allows the user 
to run stress tests based on the DIN 40839 and ISO 16750-2 standards. The functions have the 
ability to test 12 volt and 24 volt systems. For details on the DIN 40839 and ISO 16750-2 
standards, please see www.din.de (DIN standards) and www.iso.org (ISO standards). 
DIN 40839 Parameters 
The DIN40839 function simulates a test pulse based on the DIN 40839 standard. The standard 
pulse shape and parameters are shown below: 
Figure 3.8 – Test Pulse waveform (DIN 40839) 
Note: This functionality is only available on model 9115-AT 










