PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
Flex-Ray Testing
Flex-Ray Testing
Please can someone help explain this issue I'm having. I needed to test a Fkex-ray bus on a Audi A7, however before carrying out the test Pico 7 advises that normal test lead's aren't suitable and that a TS375 test probe is required. So I ordered one and in the meantime thought I'd check the bus with a standard lead to get a reading? To my surprise and using Pico 7 flex-ray presets I got an over range reading of 25v !! However what's troubling me is that if I check the bus using the Can-bus preset I get a more normal reading of 2.5 / 3v ? Can someone help explain this?
Re: Flex-Ray Testing
The presets are expecting you to use 10x leads (that pass 1/10th of the voltage to the scope) so it is multiplying the voltage it sees by 10.
If you check in "probes"you will probably find it's set to a 10:1 Attenuator, if you change this to "no scaling" probe you will get the expected results
HTH
If you check in "probes"you will probably find it's set to a 10:1 Attenuator, if you change this to "no scaling" probe you will get the expected results
HTH
Re: Flex-Ray Testing
Thanks I did think that might be the case? noting that the TA375 had a X10 attenuator switch, but when I looked through the preset probe settings I couldn't find any difference between the 2 , although no doubt this is down to me learning the new 7 software.
Regards Paul
Regards Paul
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Steve Smith
- Pico Staff Member
- Posts: 1594
- Joined: Sun Aug 25, 2013 7:22 am
Re: Flex-Ray Testing
Hello and thank you for the posts
Paul, I have just read through the FlexRay Guided Test and we do not mention the x10 attenuation setting; sorry, this should be within the text and we will amend accordingly
The Guided Tests are under constant development/improvement and thanks to your post we can improve further still
I will add a new feature request for the software team to triage ASAP
The keen-eyed may have seen the x10 indication in the channel lozenge of the Example Waveform but if you had spotted that as a new user to PS7 I would take my hat off in respect
I hope this helps, take care......Steve
Paul, I have just read through the FlexRay Guided Test and we do not mention the x10 attenuation setting; sorry, this should be within the text and we will amend accordingly
The Guided Tests are under constant development/improvement and thanks to your post we can improve further still
I will add a new feature request for the software team to triage ASAP
The keen-eyed may have seen the x10 indication in the channel lozenge of the Example Waveform but if you had spotted that as a new user to PS7 I would take my hat off in respect
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