Pulse “1b” is defined differently by various international standards and/or OEM EMC specs.
![](/EMCFLEXBLOG/image.axd?picture=/2022/P1/Pulse1b_CS00054.png)
Daimler and Chrysler have quite a similar definition for Pulse 1b. Us = 30V.
![](/EMCFLEXBLOG/image.axd?picture=/2022/P1/Pulse1b_MBN_10284_2_2011.png)
![](/EMCFLEXBLOG/image.axd?picture=/2022/P1/Pulse1b_Nissan_28401NDS02_2016.png)
Nissan requirement for Pulse 1b is quite different (-100V).
![](/EMCFLEXBLOG/image.axd?picture=/2022/P1/Pulse1_SAE_J1113_11_2007.png)
The old 2007 version of SAE J113-11 is also significantly different for multiple pulse parmeters.
Christian Rosu, 2022-01-24