Products > Test Equipment
Sniffing the Rigol's internal I2C bus
marmad:
--- Quote from: rmawatson on June 22, 2014, 02:45:37 pm ---I was however wondering... Is it possible, like with flash/hard drives, that they units are tested prior to being labeled, and perhaps there is variation in the quality of the analog front ends of these scopes. Some work up to 300mhz within some set parameters, others don't perform to the same quality threshold, and they are catagorised as such?
This would make sense when looking at the cost of these scopes. As with most things, making it with tolerance is cheaper, especially if you can rebrand lower quality items as a lower end in the same product range.
This is from a point of view or ignorance on the internals of these scopes, so I have no idea if there are components that have this kind of band of quality, or if its a case of it they work at 300mhz as designed, or not at all?
--- End quote ---
I don't think that's the answer - since, as far as we've discovered so far, the entire series has always been a single model - although it's possible Rigol has changed something.
As mentioned in my previous post, possible problems with 300MHz could theoretically arise from aliasing caused by a sample rate that's too low. When both channels are on, the max. rate is 1GSa/s - meaning the Nyquist frequency is just 500MHz - and from published BW tests, 500MHz is not attenuated enough by the DS2000 front end. Perhaps this is something that Rigol has tackled in newer DS2302s, although I'm skeptical about it.
EDIT: It just crossed my mind that perhaps there's a new revision of the DS2000A series motherboard because of the recent introduction of the MSO2000A. So maybe some new buyers of the DS series are getting the new revision - which could, in some way, impact the ability to install the 300MHz option.
AintBigAintClever:
--- Quote from: marmad on June 22, 2014, 06:31:04 pm ---It just crossed my mind that perhaps there's a new revision of the DS2000A series motherboard because of the recent introduction of the MSO2000A. So maybe some new buyers of the DS series are getting the new revision - which could, in some way, impact the ability to install the 300MHz option.
--- End quote ---
I can screenshot mine to get the various software/hardware versions and partial serial number if that helps, although it's running modified 2.x (and thinks it's a DS2302 scope).
daemonix:
--- Quote from: swallowtail333 on June 24, 2014, 10:03:45 am ---
--- Quote from: max666 on June 19, 2014, 05:01:34 pm ---
--- Quote from: Turtle9er on June 19, 2014, 04:24:18 pm ---Just tried to get the new firmware, and says files are gone....guess Rigol didn't like ppl just downloading it. Anybody out there willing to share the files?
--- End quote ---
Like Codemonkey said: "The following instructions apply, don't hold me responsible if you brick your scope etc etc..."
--- Quote ---Links to download the two update files (Bootloader and Firmware update) -> 00.04.00
Be aware that after finishing the update no downgrading is possible.
Start with the Bootloader File and follow the instructions. After successfully finishing the bootloader update
do NOT reboot as instructed. Instead, continue with the Firmware update file.
Bootloader Update (new link):
https://www.dropbox.com/s/nteyndjz17dmcmi/DS1000Z%28Boot%29update.rar
Firmware Update (new link):
https://www.dropbox.com/s/w9x66ghdhagtsaj/DS1000Z%28ARM%29update.rar
--- End quote ---
--- End quote ---
Hello.
Update file(bootloader)here is same as RIGOL International(China) Update file(MD5 checksum is same).
I don't why some model has to be done like that.
So my concerns,if we update only official update file(same as 1st file here) as usual,whether the options are remained or not.
The firmware here(2nd one) is a bit small file size.But I think,totally the result might be same.
Anybody only updated first file here?and no problem?
--- End quote ---
Be very careful with these files!!!! Bricking is very easy!!!!
You need to do is in 2 steps without reboot! if you reboot after the first file your are dead! :)
PS: there are some differences between serial numbers too! its better to ask for the right one for your serial number... its free... why download this one?
rmawatson:
Just to follow up,
My new 2072A arrived, and using the Upgrade Utility from madcrow, it took me about 5 minutes to get all the options. Including the 300mhz!
Photos of the HW/SW versions are included.
https://www.eevblog.com/forum/testgear/ds2000a-upgrade-utility/msg467427/#msg467427
Thanks to all who made this possible!
One question. Is it now ok to upgade this to the latest firmware version?
Purevector:
--- Quote from: rmawatson on June 24, 2014, 03:36:09 pm ---Just to follow up,
My new 2072A arrived, and using the Upgrade Utility from madcrow, it took me about 5 minutes to get all the options. Including the 300mhz!
Photos of the HW/SW versions are included.
https://www.eevblog.com/forum/testgear/ds2000a-upgrade-utility/msg467427/#msg467427
Thanks to all who made this possible!
One question. Is it now ok to upgade this to the latest firmware version?
--- End quote ---
So I noticed that your scope came with 3.0.SP1 firmware, whereas mine came with 2.0.1. When I get home I'll take a screenshot of the detailed system information and post it. If you could do the same we can compare and see if there is a difference.
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