PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
Linux.. Pico 7.. 4425A.. O2 Sensors
Linux.. Pico 7.. 4425A.. O2 Sensors
Has anyone noticed that in the last couple of weeks Pico7 Linux can now be used to scope analogue O2 sensors?
The reason I say that is previous to sometime in the last 2 or 3 weeks it was totally unusable, I couldn't see an O2 sensor signal when watching live because of the horrendous onscreen noise & got to the point where I wasn't using the 4425A at all.
Over the last couple of weeks I saw that Pico updated drivers & software had been installed so yesterday I thought I'd give it another go. To my pleasant surprise I saw that after applying the 20khz hardware filter a 4 wire analogue B1S1 O2 sensor was almost noise free. I tried 3 other B1S1 sensors on different makes of vehicle with the same result.
I hope I haven't jinxed this improvement lol
Well done Picoscope
The reason I say that is previous to sometime in the last 2 or 3 weeks it was totally unusable, I couldn't see an O2 sensor signal when watching live because of the horrendous onscreen noise & got to the point where I wasn't using the 4425A at all.
Over the last couple of weeks I saw that Pico updated drivers & software had been installed so yesterday I thought I'd give it another go. To my pleasant surprise I saw that after applying the 20khz hardware filter a 4 wire analogue B1S1 O2 sensor was almost noise free. I tried 3 other B1S1 sensors on different makes of vehicle with the same result.
I hope I haven't jinxed this improvement lol
Well done Picoscope
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Steve Smith
- Pico Staff Member
- Posts: 1671
- Joined: Sun Aug 25, 2013 7:22 am
Re: Linux.. Pico 7.. 4425A.. O2 Sensors
Hello and thank you for the post
There are constant improvements in place with PicoScope 7 which does include drivers, software and bug fixes
You can see these in the release notes for the version you downloaded here https://www.picoauto.com/downloads or here topic22097.html where we focus on new features
I know this is a long shot, would you have the psdata file for the O2 sensor signal that was saturated with noise?
I have seen this, particularly when looking at wideband sensors (B1 S1) response signal during the warm up phase or shorty after start up (hot engine) whereby post heating, the noise diminishes drastically
Again another long shot can you remember what vehicle this was?
Either way, good to have the feedback and thank you for taking the time
Take care........Steve
There are constant improvements in place with PicoScope 7 which does include drivers, software and bug fixes
You can see these in the release notes for the version you downloaded here https://www.picoauto.com/downloads or here topic22097.html where we focus on new features
I know this is a long shot, would you have the psdata file for the O2 sensor signal that was saturated with noise?
I have seen this, particularly when looking at wideband sensors (B1 S1) response signal during the warm up phase or shorty after start up (hot engine) whereby post heating, the noise diminishes drastically
Again another long shot can you remember what vehicle this was?
Either way, good to have the feedback and thank you for taking the time
Take care........Steve
Re: Linux.. Pico 7.. 4425A.. O2 Sensors
Hi Steve.. Sorry for the late reply, I didn't know there was a reply to my post. Is there a setting somewhere for the forum to notify via email?
I tried attaching a noisy O2 sensor psdata file but it was too large at 66MB. It's the Google drive link & the vehicle details are in the file.
https://drive.google.com/file/d/1wn0U5c ... sp=sharing
The problem has been been (fingers crossed) fixed with recent Linux Pico7 & driver updates plus the mod I did to the USB cable topic23331.html
Hope it helps in some way
Cheers
Phil
I tried attaching a noisy O2 sensor psdata file but it was too large at 66MB. It's the Google drive link & the vehicle details are in the file.
https://drive.google.com/file/d/1wn0U5c ... sp=sharing
The problem has been been (fingers crossed) fixed with recent Linux Pico7 & driver updates plus the mod I did to the USB cable topic23331.html
Hope it helps in some way
Cheers
Phil