Author Topic: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter  (Read 38500 times)

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Offline Lukas

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #50 on: July 05, 2012, 08:47:59 pm »

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
 

Offline free_electron

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #51 on: July 06, 2012, 12:43:20 am »
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 .. )
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Online EEVblog

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #52 on: July 06, 2012, 12:45:26 am »
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.
 

Offline free_electron

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #53 on: July 06, 2012, 03:54:51 am »
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...
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Offline mikeselectricstuff

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #54 on: July 06, 2012, 09:14:14 am »
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.
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Offline NEDM64

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #55 on: November 12, 2012, 02:07:40 pm »
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...

 

Offline con-f-use

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #56 on: October 17, 2013, 09:04:13 am »
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...
 

Offline KedasProbe

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #57 on: October 17, 2013, 12:01:55 pm »
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.
Not everything that counts can be measured. Not everything that can be measured counts.
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Offline sacherjj

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #58 on: February 07, 2014, 04:56:19 pm »
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.
 

Offline KedasProbe

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #59 on: February 07, 2014, 06:29:29 pm »
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
« Last Edit: February 07, 2014, 06:42:50 pm by KedasProbe »
Not everything that counts can be measured. Not everything that can be measured counts.
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Offline sacherjj

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #60 on: February 07, 2014, 07:14:21 pm »
 

Offline Mickle T.

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #61 on: August 19, 2014, 07:29:34 pm »
Rigol DM3068 have a very interesting Input Amplifier section and VREF scaling. Can anyone help with the high resolution photos of the DM3068 PCB?
 

Offline Teneyes

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #62 on: February 26, 2015, 07:49:13 am »
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
IiIiIiIiIi  --  curiosity killed the cat but, satisfaction brought it back
 

Online wraper

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Re: Video Review: Rigol DM3068 6.5 Digit Digital Multimeter
« Reply #63 on: February 26, 2015, 08:24:13 am »
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.
 


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