Other options for attenuators?

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Other options for attenuators?

Postby hexibot43 » Mon Dec 10, 2012 8:52 pm

I am currently working on a 1996 Mercedes-Benz C280 Ignition system. The system is set up distributorless with one coil per every two cylinders (Waste-spark). I was trying to tap into the primary ignition circuit with my 4423 at each of the coil primary ground leads and the cylinder block. I installed the 20:1 attenuators which gives you a range up to 200v. This system is peaking over 250 volts on the Primary, so I'd be running it out of range. Are there other choices for attenuators?

Thanks,

Marcello
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Re: Other options for attenuators?

Postby Robski » Mon Dec 10, 2012 9:10 pm

Usually you get -100 to +400V iirc, i duplicated the probe & added my own V scales so they went higher.

You can also select the X20 probe, still using the attenuator .
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Re: Other options for attenuators?

Postby hexibot43 » Tue Dec 11, 2012 8:24 pm

Robski wrote:Usually you get -100 to +400V iirc, i duplicated the probe & added my own V scales so they went higher.

You can also select the X20 probe, still using the attenuator .


I think I've got it. The input range that was selected with the 20:1 attenuator was not the full extent of what could be used. I duplicated the probe for 20:1 and went through editing it. I noticed the range that was allowed as you have said is -100 to +400v . Where did you make the changes to the scaling? I was more worried about damaging the scope than anything else but now that I see the true range I see that it should be ok. I don't like seeing the scope saying out of range. Makes me very nervous.

And what is "iirc"?

Thanks,

Mab
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Re: Other options for attenuators?

Postby Robski » Tue Dec 11, 2012 8:39 pm

And what is "iirc"?


If I Remember Correctly .

Where did you make the changes to the scaling?


In the wizard when editing the probe .
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