10:1 attenuator

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10:1 attenuator

Postby johan verdeyen » Mon Jun 08, 2015 11:13 am

He guys
Do you always use a 10:1 attenuator for measurements on a primary ignitioncoil?
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Re: 10:1 attenuator

Postby roadserpent » Mon Jun 08, 2015 5:11 pm

The older 4423 and 4223 automotive Pico scopes had a max input voltage of 100 and utilize a 20:1 attenuator. The newer 4425 and 4225 scopes have a higher input voltage limit, and come with and would use the 10:1 attenuator.
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Re: 10:1 attenuator

Postby hijakd » Sun Jul 12, 2015 11:18 am

Hi I alway s use a 20:1 att on primary ignition and injectors,I have seen anywhere from 100-400v on the primary and 60-110v on an injector
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Re: 10:1 attenuator

Postby PhilS » Fri Sep 11, 2015 12:29 pm


you can use either the 10:1or 20:1 attenuators. Remember to watch out for that when using downloaded reference waveforms or Guided Tests from within the software. If they were saved using a 20:1 and your signal is connected through a 10:1 then remember to adjust scaling, mentally or in PicoScope, if you want both with the same visible amplitude.
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