PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
Maf frequency measurements problem
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amsclaremorris
- Newbie
- Posts: 3
- Joined: Thu Jun 11, 2020 7:12 am
Maf frequency measurements problem
Hello, during digital air flow meter measurements, I always have a frequency around 8-9 kHz at idle, no matter what brand of vehicle, is this normal? in the library, it is about 3khz and it increases rapidly after acceleration to about 6khz, my increase is very small slightly above 9khz, the connectors are connected well, no matter if I use guided tests or set them myself, I am asking for help because I do not know if I have damaged device, software or I doing something wrong .... Windows 10 on a yearly laptop. the same situation on pico6 and pico7 soft , device is 4425a automotive ...thank you.
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ben.martins
- Pico Staff Member
- Posts: 545
- Joined: Tue May 16, 2017 1:02 pm
Re: Maf frequency measurements problem
Hello,
Please accept my apology in this late reply and sorry to hear you seem to be having some problems with the frequency measurement. I have a few questions if that is ok.
You mention using PicoScope 7, is the stable or Early Access build?
Is it possible to provide the PSDATA file which you are referring too?
Have you tried to capture the raw signal and then apply a frequency math channel?
Rest assured we will look into this.
Kind regards
Ben
Please accept my apology in this late reply and sorry to hear you seem to be having some problems with the frequency measurement. I have a few questions if that is ok.
You mention using PicoScope 7, is the stable or Early Access build?
Is it possible to provide the PSDATA file which you are referring too?
Have you tried to capture the raw signal and then apply a frequency math channel?
Rest assured we will look into this.
Kind regards
Ben
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amsclaremorris
- Newbie
- Posts: 3
- Joined: Thu Jun 11, 2020 7:12 am
Re: Maf frequency measurements problem
Hi thanks for your answer, now:
this same is on pico 6,7 , different laptops pico 7 109 and pico 7 116 stable.
I attach including math channel
this same is on pico 6,7 , different laptops pico 7 109 and pico 7 116 stable.
I attach including math channel
- Attachments
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- Nissan_Qashqai_2011_Diesel_20230809-0001 .psdata
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ben.martins
- Pico Staff Member
- Posts: 545
- Joined: Tue May 16, 2017 1:02 pm
Re: Maf frequency measurements problem
Thank you for the capture as it really helps to understand how to recreate the issue.
It appears that this was a problem that has now been resolved in the latest Early Access version. Would you be able to try this version of PicoScope 7 Automotive for me and see if you are still seeing the problem? You can have both versions of PS7 on you laptop without any issues.
I've just tried it with a signal generator and it is working as expected with the settings from the file you have sent.
Please let me know when you get a chance.
Kind regards
Ben
It appears that this was a problem that has now been resolved in the latest Early Access version. Would you be able to try this version of PicoScope 7 Automotive for me and see if you are still seeing the problem? You can have both versions of PS7 on you laptop without any issues.
I've just tried it with a signal generator and it is working as expected with the settings from the file you have sent.
Please let me know when you get a chance.
Kind regards
Ben
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amsclaremorris
- Newbie
- Posts: 3
- Joined: Thu Jun 11, 2020 7:12 am
Re: Maf frequency measurements problem
Hi, it's working now perfectly, thank you so much for your help... 