Video Review: Rigol DM3068 6.5 Digit Digital Multimeter

[Lukas]

ZFP. Zipped Flash ?

Nope, the /usr/bin/zfp is the DMM app itself. It's a BFLT executable - version 4 ram. The compressed file system is the jffs2.bin

[free_electron]

Hmm. i was just guessing.

I took some pictures over lunch and took a quick look around.. one thing i couldn;t immediately find was a flash rom for the in-guard fpga .... so i wonder how it gets its bitstream after a cold start ... it almost has to come in over the optical link... maybe that is part of the slow bootttime. maybe that could be part of that ZFP file.. Zipped FPGA ?

The file for that fpga is pretty large ( it's a hunky fpga .. )

[EEVblog]

I took some pictures over lunch and took a quick look around.. one thing i couldn;t immediately find was a flash rom for the in-guard fpga .... so i wonder how it gets its bitstream after a cold start ... it almost has to come in over the optical link... maybe that is part of the slow bootttime. maybe that could be part of that ZFP file.. Zipped FPGA ?
The file for that fpga is pretty large ( it's a hunky fpga .. )

Some FPGA's have built in flash memory. Which exact model is it?

Dave.

[free_electron]

Altera cyclones. No flash on board .
Anyway , i only looked for 2 minutes. I'll do a teardown topic to orrow. Too tired now. Long day...

[mikeselectricstuff]

If no obvious FPGA flash, chances are it's loaded by the main MCU from an area of the program flash. If you have a big enough program flash, and the FPGA isn't needed to get the  MCU running this is generally the best way to do it as it makes updates easier and can easily  ensure the correct FPGA image for the  firmware version.

[NEDM64]

Thanks for the review, currently I'm not needing a bench multimeter, but this one looks like a good one for the money.




BTW, I'm just a noob, but why are people like that "bored" guy doing with test probes in their hand (assuming they have anything usefull to do with them)? That's funny, they know so much that I don't see why they need test equipment in the first place... maybe checking if batteries are good, i don't know...

[con-f-use]

Does anyone know, if the DM3058E is pysically different from the DM3068? It seems to be the same meter. Maybe there's a hack to save people 350 bucks...

[KedasProbe]

Does anyone know, if the DM3058E is pysically different from the DM3068? It seems to be the same meter. Maybe there's a hack to save people 350 bucks...

They are really different,  the weight is also different according to spec.
Don't think of it is as the 6.5 and the 5.5 digit version.

[sacherjj]

I was looking for the service manual, because I have one of these coming at work.

Looks like Rigol had the service manual up at one time for the DM3068.  Not any more, but luckily, Google caches.

http://webcache.googleusercontent.com/search?q=cache:ns5niZR6GD8J:www.rigol.com/prodserv/DP1116A/document/?act%3Dview%26itemid%3D320+&cd=3&hl=en&ct=clnk&gl=us&client=firefox-a

Doesn't look like it pulled over the images from the PDF though.

[KedasProbe]

That's not the latest version, the latest version is here:
http://www.rigol.com/prodserv/DM3068/document/

edit: ah the service guide

edit2: I uploaded my copy:
http://ul.to/19d4mc2d

[sacherjj]

edit2: I uploaded my copy:
http://ul.to/19d4mc2d

Thanks for that.

[Mickle T.]

Rigol DM3068 have a very interesting Input Amplifier section and VREF scaling. Can anyone help with the high resolution photos of the DM3068 PCB?

[Teneyes]

was looking around for used gear, but ended up watching this video.

i hope RIGOL is reading this, but i doubt the distributing channel will improve to support end users where there is lesser buyers or even 1 potential buyer

My experience with support has been good.
After web submit ion I got RMA # and even a prepaid shipping label.
i purchased from TEquipment (distributor ) but shipped back to RigolNA and as I had the tracking number I watch my DSo  go back to Rigol.
I then relieved Email that r my repaired devices was shipped back to me.
I could see it was only at Rigol 30 hours for repairs
Working ever since.
I also have the DM3068 no problems

[wraper]

was looking around for used gear, but ended up watching this video.

i hope RIGOL is reading this, but i doubt the distributing channel will improve to support end users where there is lesser buyers or even 1 potential buyer

My experience with support has been good.
After web submit ion I got RMA # and even a prepaid shipping label.
i purchased from TEquipment (distributor ) but shipped back to RigolNA and as I had the tracking number I watch my DSo  go back to Rigol.
I then relieved Email that r my repaired devices was shipped back to me.
I could see it was only at Rigol 30 hours for repairs
Working ever since.
I also have the DM3068 no problems

Not the case in Europe. If the seller won't make a replacement by itself but will sent to rigol Gmbh in Germany, you are screwed. Expect up to a few months turnaround. Also all the service seems to be just a one guy in Germany to the extent that things won't be moving at all if he is somewhere away, in my case on trip. This was confimed by Lithuanian distribuitor.