Search found 11 matches

by AlexMpico
Fri Mar 04, 2022 1:06 pm
Forum: PicoScope 6 Automotive software
Topic: Curious secondary "mega"-spike!!
Replies: 1
Views: 8771

Curious secondary "mega"-spike!!

Observed some curious secondary ignition measurements today on a coil on plug Volvo V70 5cyl engine. Using another brand, the scope sometimes defaulted to a ridiculous 150kV+ peak firing line. I'm thinking Impossible. No coil can produce that even open circuit even once. Im thinking the scope is not...
by AlexMpico
Thu Mar 04, 2021 12:54 pm
Forum: PicoDiagnostics software
Topic: Hysterisis hysterics
Replies: 3
Views: 8455

Re: Hysterisis hysterics

thanks Steve, getting there. Mists slightly clearer. Let me play with some messy signals and I may come back with more questions.
Cheers
alex
by AlexMpico
Wed Mar 03, 2021 10:36 pm
Forum: PicoDiagnostics software
Topic: Hysterisis hysterics
Replies: 3
Views: 8455

Hysterisis hysterics

:D Hi there,
Can someone please explain to my what "hysterisis" is, how it works, and what the +/- % is actually doing to the hysterisis in the Trigger options.
I have a vague understanding but I don't get how to apply it.
Appreciate some simple explanation and help
Best
Alex
by AlexMpico
Sat Nov 07, 2020 10:41 am
Forum: Diagnostic discussion
Topic: Long Tail Wasted Spark waveform?
Replies: 0
Views: 7850

Long Tail Wasted Spark waveform?

Hi, Any suggestions on what might be causing the very long negative tail on the wasted spark portion of the 0004 cylinder. I've included the 0001 companion cylinder waveform which doesn't indicate a reason to me. No misfires evident. This is a 1990 Miata NA 1.6lt 4cyl with new plugs and wires, but l...
by AlexMpico
Sun May 19, 2019 8:12 am
Forum: PicoScope 6 Automotive software
Topic: Attenuation Calculation by Scope
Replies: 0
Views: 5245

Attenuation Calculation by Scope

Hi I'm using an inductive Sec Ig clamp to get a waveform. Every other time I've used it I have got the correct calculation and kV indication. However, on my last usage, the scope seems to be out by a decimal: ie logging a 100kV spike (which it cannot be) instead of around 10kV. The Linear Equation I...
by AlexMpico
Sun Jan 13, 2019 11:04 am
Forum: Diagnostic discussion
Topic: Inverted waveform
Replies: 0
Views: 5803

Inverted waveform

Hi there, using 2205A with inductive clamp around secondary wire extension on secondary ig, and I've done many times. However I'm receiving an inverted waveform. Have tried turning around induction clamp. This is not a Wasted Spark system. It is Coil on Plug, Mazda2 2011, ZY 1.5L engine. I know ther...
by AlexMpico
Mon Jul 16, 2018 11:44 am
Forum: PicoScope 6 Automotive software
Topic: Sampling Rate Mystery
Replies: 8
Views: 10230

Re: Sampling Rate Mystery

Hey Martyn, thanks so much for taking the time to explain. In any case the 2205a is a great learning tool. Looking forward to eventually scaling up to the 4000 series.:-)
by AlexMpico
Fri Jul 13, 2018 9:15 am
Forum: PicoScope 6 Automotive software
Topic: Sampling Rate Mystery
Replies: 8
Views: 10230

Re: Sampling Rate Mystery

I see, ok, so I thought this is happening anyway by default because the scope is hooked up Via the USB cable. No?
Is there a setting that governs this?
Alex
by AlexMpico
Thu Jul 12, 2018 10:00 am
Forum: PicoScope 6 Automotive software
Topic: Sampling Rate Mystery
Replies: 8
Views: 10230

Re: Sampling Rate Mystery

Fantastic Martyn. I appreciate the explanation and sharing the knowledge. I'm really glad that a comp like Pico actually provides this option/level of quality scope that allows people like me to get into the craft of 'scoping with an amazing tool at an affordable price. There's a lot of grunt in the...
by AlexMpico
Wed Jul 11, 2018 9:57 pm
Forum: PicoScope 6 Automotive software
Topic: Sampling Rate Mystery
Replies: 8
Views: 10230

Re: Sampling Rate Mystery

Thank you Martyn for takking a moment to reply Yes the 2205 is my entry scope and I have my sights on the 4000 series when I can afford it. I have to congratulate you guys cos I find the 2205 excellent for almost all functions, and I use 20:1 attenuators for extra protection and added V range I don'...