which scope for engineer/automotive enthusiast?
I am in the market for a scope to use on auto repair as a DIY. I am also an Electrical / Computer Engineer, with a degree and 30 years experience in embedded software and hardware. I have used sophisticated storage scopes on digital circuits and motor controls. I try to troubleshoot and repair my cars as needed, with various degrees of success. At the moment, I have a Ford Ranger V3.0 that just "doesn't sound right" under load, and I'm interested in checking things like cam/crank timing and spark quality, etc.
I have a few hundred dollars I can spend, I would prefer not to waste it on a tool which will just frustrate me. I am looking at the Hantek USB scopes like the 1008C and the various other Hantek 4 channel models. I don't currently own any scope accessories, so the full kits look appealing. I am fully aware that these scopes have rather unsophisticated input circuitry and software, as well as limited storage ability. It also seems there are software installation challenges and that probably Hantek does not provide the most robust or rich featured software. I see on the Hantek web site that they have a downloadable SDK, and I most likely have the skills needed to write some software. I am very familiar with Visual Basic, for instance, and have written quite a bit of communication-intense software.
I've also looked a bit at the Autel scope, which looks like it is probably a Hantek under the hood. I don't see a whole lot of good info on the Autel software, I would be using it with a laptop. I also don't see an SDK for it. I suspect the Autel has somewhat better input circuitry.
So, now that you know a little about me, what would you recommend? If the Hantek and/or the Autel are likely to be junk, I could spend a bit more. Real 4-channel storage scopes get a bit pricey, seems like $600 or so with no accessories. That is starting to get to be a lot of $$$ for something I've lived this long without.
Thanks in advance,
Jim
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I’m an engineer and DIYer myself.
Personally, I couldn’t get past the headaches that seem to plague the automotive scopes and just can’t justify a Pico for personal use. I went with a Siglent handheld DSO and bought quality leads and probes from aeswave. It has served me well. There is good info here on budget automotive scopes if you want to go that route.
Paul’s (scanner danner) book is a must have as well.
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- Andy.MacFadyen
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I mainly use my Owon scopes a DSO71020v with the optional battey and a VDS1022I and like them both. As with any non-automotive scope both lack f a scale for use with an x20 attenuator.
The VDS1022I produces nice clean traces the hardware although entry level is much superior to the Hantek and the software is really nice to use , it is great value for money but it remains an entry level scope, and the faster scopes in the Owon VDS range are much more expensive.
Only issues with the DSO7102v are short battery life and while it is great used as a stand alone item of equipment if you connect to a PC the software is a bit dated and "clunky"..
Getting more expensive but still very cheap compared to a Snap-On or Automotive Pico you should consider Ditex -- Auto Ditex a Bulgarian company have been making automotive scopes for ten years, they are actively developing supporting their products I have couple of items of Ditex equioment and the quality is first class I have also talked to the product developer on Facebook and is really into supporting his product. Ditex are great value for money in Euro but probably not so in the US.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
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Could someone with no scope experience be able to use the Siglent handheld for automotive troubleshooting without the above?
Regards.
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is this a cause of concern in handhelds and is this a limitation with the Siglent ?
Regards.
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From my shopping around, I found that anything better than mine really ramps up the price.
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- Andy.MacFadyen
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" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
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The chap was referring to the Fluke 98 which he initially suggested but had second thoughts.
The Fluke even used, is out of budget. What members here share from experience is valuable. This must be a one time, long term purchase. Can't have buyer's remorse, return or such like. Huge shipping costs and taxes are not reversible. So have to be informed and choose wisely.
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Mine will pause so you can zoom and pan on the trace. Like I said, it doesn’t have a lot of capacity for a long time base. It will record to a usb drive for a longer duration, but that function is not as convenient.
I am honestly really glad I didn’t go with a pico or other laptop based scope (of course, I would like to have both). Being a DIYer and engineer, I have ended up using my scope to troubleshoot a lot of things at home and work.
Recently at work, we had an air conditioner that wouldn’t communicate with a thermostat. Ended up being an issue with the fiber optic switch that wasn’t showing up with a multimeter.
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- dstevenslv
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- GroundLoop
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www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1382214828
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- Andy.MacFadyen
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GroundLoop wrote: Was reading on autonerdz.com that there is a difference between automotive scopes and regular electronic scopes and that regular scopes can be susceptible to ground loops in an automotive environment. They were saying a ground loop can be fatal to a regular scope.
www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1382214828
Very few oscilloscopes have complete isolation between the grounds on individual channels on most the ground on all channels are connected in common inside the scope and on 230v mains powered labscopes also connected direcely to the ground on the 230v household ring mains.
Basically you can choose to use local grounds on a sensor or choose a battery or block ground but don't mix them --- the reason for not mixing grounds is if you have say a broken main engine ground wire then in some circumstances the whole starter or fuel pump current could try to flow to ground through your scope
However using a local ground on say a MAFor MAP sensor will give a cleaner signal so if looking at a single sensor I choose a local sensor ground but if using multiple channels especially where high current devices such as starter or other motors or even relays I usually choose a block ground.
All oscilloscopes are designed to survive misconnections. I am how ever very wary of scopes that don't have USB isloation that is isolataion between the scope and the PC. This one of the reasons when I use a USB scope I use the Owon VDS1022i --- the "i" suffix inducates Isolatated
However you can quite cheaply buy a USB to sit between the PC and the scope Ditex sell a high quality one.
www.autoditex.com/usb-isolator-92.html
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
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