If you need a good scope buy a Rigol DS2072 NOW!

Z

zombiess

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Just got this 70Mhz 2GSa/S DS2072 scope which just so happens to have the exact same internals as a DS2202 200mhz version and it's only $850. If you search around it can easily be converted into the 200mhz version. This scope is so much more advanced than anything I have worked with it's going to take a little time to learn it, but I can already tell the feature set is spectacular.

Stock the scope will store 14M pts, with all features enabled... 56M pts!

http://www.tequipment.net/RigolDS2072.html has 11 in stock right now, I pre-ordered over 2 weeks ago and received mine today. I expect these to go very fast as they are not low end toys and are more than any home lab will probably require.
 
I look forward to seeing some nice screen-shots.

Does this mean that at last we'll get the answer to how the controller gives the speed boost (120%) with the three-speed switch?
 
d8veh said:
I look forward to seeing some nice screen-shots.

Does this mean that at last we'll get the answer to how the controller gives the speed boost (120%) with the three-speed switch?
Click to expand...

I posted the 120% information months ago in the tech section with scope screen shots. We now know exactly how it does it.
 
Nice! The 1052 is the same way, but 50mhz to 100mhz, and its only like 400 bucks.
 
grindz145 said:
Nice! The 1052 is the same way, but 50mhz to 100mhz, and its only like 400 bucks.
Click to expand...

Yes, but that scope is a cheap toy compared to this. This is 2x the cost but 3-4x the value and besides the feature set, it has a HUGE screen. With a keygen 200mz is just a few keystrokes away. Even at 70mhz it's an unbelievable deal. I'm just starting to dig into the scope function (i've read the reviews) and all of the features I could ever dream of are here. Now I need a signal generator and a differential probe set and I should be good for hopefully 10 years (my last scope purchase was a Fluke 123 scope meter about 10 years ago). I had an old analog 20mhz scope before that.
 
I would greatly appreciate if someone could outline what sort of basic troubleshooting is possible with a $20 logic analyzer or multimeter, and what sort of stuff really requires a pricey scope.

Off the top of my head, it seems like we could get a decent view of what the hall sensors are doing and see what the MCU is outputting to the fets with a logic analyzer? A DMM is good enough for troubleshooting any issue you might have with a throttle, right?

I've been able to troubleshoot stepper motors with a logic analyzer to see that the pulses are correct and used a DMM to verify voltages, would that technique transfer to the 3 phase BLDCs we use?
 
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