Will try to track down a half decent one.
LS1 Cam & Crank Scope
Thread Starter
Teching In
Joined: Mar 2007
Posts: 4
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From: Scotland
LS1 Cam & Crank Scope Can anyone advise if this scope of the cam and crank sensors on an LS1 is OK?
Voltage may be different to normal as it is powered by a Motec, but as I don't have a known good graph to compare it against I don't know if the wave pattern is correct.
Voltage may be different to normal as it is powered by a Motec, but as I don't have a known good graph to compare it against I don't know if the wave pattern is correct.
Thread Starter
Teching In
Joined: Mar 2007
Posts: 4
Likes: 0
From: Scotland
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Thread Starter
Teching In
Joined: Mar 2007
Posts: 4
Likes: 0
From: Scotland
Unfortunately I had a similar reaction - it's a lot of money for something I'd very rarely use. I'm more inclined to put the money towards a Syvecs ECU instead which has scoping output built in.
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http://www.boschdiagnostics.com/test...s/MTS5200.aspx
This is the newer version. Vetronix has since been bought by Bosch.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
The cheap scopes are usually 8 bits and don't have deep buffers (let alone 4 channels)...
I can understand why a DIY would not buy an expensive scope... by mentioning the Pico I was hoping you could find someone who did have a like scope.
I can understand why a DIY would not buy an expensive scope... by mentioning the Pico I was hoping you could find someone who did have a like scope.
Used scopes are available for under $100 if you look. I paid $60 for a 10MHZ Hitachi and I put it in my roll around cart. Use the hell out of it. Couple weeks ago I was looking at the waveform from a MSD flying magnet crank trigger and found it was wobbling. And it wasn't what I thought, the crank shaft nose was being bent by an out of flat washer between the crank and the balancer. If someone told me that I would think they were nuts. Also found the MSD 7AL had a bad ground.
Cheap tool for what it does....
The only advantage I can think of that a computer based scope would have is the ability to store, share or print out waveforms. And I can't say that's not a worthwhile advantage.
Al
Cheap tool for what it does....
The only advantage I can think of that a computer based scope would have is the ability to store, share or print out waveforms. And I can't say that's not a worthwhile advantage.
Al
I'm working on a project that I am emulating a PCM on the bench, I need a 24x crank signal, and maybe the 1x cam signal from a LS1 motor
Would you beable to send me those in a WAV format? So that I can play it back through my PC sound card and into the crank sensor?
Would you beable to send me those in a WAV format? So that I can play it back through my PC sound card and into the crank sensor?
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
I'm working on a project that I am emulating a PCM on the bench, I need a 24x crank signal, and maybe the 1x cam signal from a LS1 motor
Would you beable to send me those in a WAV format? So that I can play it back through my PC sound card and into the crank sensor?
Would you beable to send me those in a WAV format? So that I can play it back through my PC sound card and into the crank sensor?
Could you send me the psdata file? I have a trial Pscope program.. not sure how or if it is possible to convert it to sound file and or play it back..
I have the tach moving but it isn't very smooth I suspect because file I am playing back is 24 evenly spaced teethe were is it should be 24 teeth two sets space 15 degrees that are 12-3 degrees apart.
I wish there was a way to convert the JPEG into a wave form, The wave is exactly what I need to create.
I have the tach moving but it isn't very smooth I suspect because file I am playing back is 24 evenly spaced teethe were is it should be 24 teeth two sets space 15 degrees that are 12-3 degrees apart.
I wish there was a way to convert the JPEG into a wave form, The wave is exactly what I need to create.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Could you send me the psdata file? I have a trial Pscope program.. not sure how or if it is possible to convert it to sound file and or play it back..
I have the tach moving but it isn't very smooth I suspect because file I am playing back is 24 evenly spaced teethe were is it should be 24 teeth two sets space 15 degrees that are 12-3 degrees apart.
I wish there was a way to convert the JPEG into a wave form, The wave is exactly what I need to create.
I have the tach moving but it isn't very smooth I suspect because file I am playing back is 24 evenly spaced teethe were is it should be 24 teeth two sets space 15 degrees that are 12-3 degrees apart.
I wish there was a way to convert the JPEG into a wave form, The wave is exactly what I need to create.
You can download the actual picoscope software from their website.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
if you look closely at the waveform you will see that:
- in each 360° there are 4 quadrants;
- in each 90° quadrant, there are 6 segments that uniquely encode that quadrant;
- in each 15° segment, there are 2 pulses, 3° and 12°, in either order, with opposite sense to each other.
