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RIGOL DS1054Z recording linear history
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archer60x:
You are going to make me do math.  :) An automotive example would be:

If an engine is rotating at 1000 RPM That means the crank sensor is going to signal 16.6 times per second.  16Hz?  i think.

If it is a waste spark system on a 4 cylinder engine then the spark plug is going to fire 500 times per minute 8.3 times per second.  8hz.

Can i fit this "width" of data onto one screen?

You are right i need to read more.  :)  I appreciate everyone's help though.
tautech:

--- Quote from: archer60x on November 12, 2022, 08:47:44 pm ---You are going to make me do math.  :) An automotive example would be:

If an engine is rotating at 1000 RPM That means the crank sensor is going to signal 16.6 times per second.  16Hz?  i think.

If it is a waste spark system on a 4 cylinder engine then the spark plug is going to fire 500 times per minute 8.3 times per second.  8hz.

Can i fit this "width" of data onto one screen?

You are right i need to read more.  :)  I appreciate everyone's help though.

--- End quote ---
The clue is your slowest s/div setting but you must wait for the display to fill......here lies the power of a DSO and yes, there are some maths involved, get used to it.
archer60x:
You guys got me thinking so i just put a head phone cable in my laptop and played a 16hz audio signal from youtube video and i got to adjust my scope to see the 16Hz.

it is starting to click in my brain now...

I should be able to get events on the screen, but i do wonder if say i get an anomaly where the spark plug is not firing on a consistent pattern and i am triggering on the crank sensor signal. will i be able to see the missing spark signal as it sporatically goes in and out.  This might be were a "log" over 10 seconds that you can look for each crank event and each spark event to make sure there is spark on the timeline where it should be.

I will keep experimenting.  Thanks again!
RoGeorge:
The oscilloscope maximum memory is 24 million samples, more than you'll ever need.  In case yours is not unlocked to 24 millions sample and all the other features, there are topics here about how to unlock all the features, free and without any risk (it's a serial number you introduce to unlock features, and there are online or standalone code generators).

Having such large memory, you can chose the sample rate and seconds/division such that to catch many sparks in the selected time frame.  Then, put the oscilloscope on stop, then zoom and scroll to inspect each spark.

Practice this this from the physical knobs and buttons at first, with the test signal internal to the oscilloscope (has a metal pin with signal on the right hand side, outside the case) then once you know how to handle the settings, you can switch to remote software if needed.  It's easier to learn with the physical buttons, each software has it's own quirks, remote control tools might have their own limitation.

But first, read the oscilloscope user's guide.
tautech:

--- Quote from: archer60x on November 12, 2022, 09:13:31 pm ---You guys got me thinking so i just put a head phone cable in my laptop and played a 16hz audio signal from youtube video and i got to adjust my scope to see the 16Hz.

it is starting to click in my brain now...

I should be able to get events on the screen, but i do wonder if say i get an anomaly where the spark plug is not firing on a consistent pattern and i am triggering on the crank sensor signal. will i be able to see the missing spark signal as it sporatically goes in and out.  This might be were a "log" over 10 seconds that you can look for each crank event and each spark event to make sure there is spark on the timeline where it should be.

I will keep experimenting.  Thanks again!

--- End quote ---
In the electronic world things that happen in the traditional ICE are slow, really slow.
Eg, even a chainsaw, 2 stroke so firing every revolution at 11k RPM has an ignition repetition rate of just 183 Hz.
Still with a ordinary scope probe with reference lead clipped to the grabber to form the most basic RF loop we can successfully use a scopes frequency counter to tune that chainsaws peak revs.
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