General > General Technical Chat
The Rigol DS1052E
anli:
--- Quote from: Simon on April 01, 2010, 06:41:12 am ---
--- Quote from: anli on March 31, 2010, 08:10:23 pm ---
--- Quote from: Simon on March 31, 2010, 07:47:47 pm ---why not ? the firmware was written for that scope anyhow.
--- End quote ---
I have read bad stories wrt upgrading another (DS1000C) series. So, I suggest there are some "subseries" inside series ;D
--- End quote ---
but if you downgrade a firmware to one you already had on your scope no worries, problems may be for those that want to downgrade, hack and reupgrade
--- End quote ---
Yes. But I have got the scope with lastest fw :(
Mark_O:
Simon,
anli has a C-series rigol, not the E-series that is being discussed here. If you haven't been following the (58 pages of) Rigol discussions at the RCGroups forums, you may not be aware that a "rose is not a rose". I.e., not all DS1xxxC models are the same. What this means is that if you have a DS1000C with, e.g. firmware 2.3.4, you can NOT upgrade to the latest 3.7.1. You can only upgrade to 2.3.17, due to hardware changes in production models.
The newer E/D-series haven't reached that point (yet). Though discussions here (and elsewhere) may motivate that sooner, rather than later.
Anli,
the first thing I would recommend you do, if you're interested in pursuing things, is follow Ross's example, and disassemble your unit to see what circuits are present on the front-end. If the varactor-switcher that Andreas identified isn't there, that will have a big impact on what options are available to you. You may have to substitute parts to change your scope's performance. My personal guess is that they do NOT use that circuit, because the C-series had models at 25 MHz, 40, 60, and 100 MHz performance levels. I'd suspect they were using different filtering components on the front-end.
OTOH, if a similar circuit is there (with 2-bit switching to control it), that means they were using a different mechanism to configure it. Then you'd need to pull the appropriate lines high or low to select the mode you wanted.
- Mark
anli:
Mark,
The thing is, this DSO is the only scope in hand, and, OTOH, I'm not experienced in digital/smd area (my experience lies in analog audio/through hole components, sorry). At such circumstances own attempts seem to be too risky, and I'll wait for more experienced fellows.
Mark_O:
All (including Dave),
I just wrote about the previous C-series... "You may have to substitute parts to change your scope's performance. My personal guess is that they do NOT use that circuit, because the C-series had models at 25 MHz, 40, 60, and 100 MHz performance levels. I'd suspect they were using different filtering components on the front-end."
Which reminded me of a fable my grandmother once read to me, when I was just a lad...
"Once upon a time, in a land far away, a company that made many measurement devices that were affordable by the peasants had many different versions in their product line. Even though the basic design and main board was the same for all of them, this required them to customize each model with different physical components. And to maintain inventories of each of the A, B, C, and D models.
One day a clever engineer at that company had the bright idea that by simplifying things, they could save a lot of production costs, and pass that savings on to their customers. By simplifying their product line down to 2 models, and incorporating a switching device to change configurations, they could make and stock a single hardware model, and tailor them to the desired level when production sales numbers were available. This customization could be done right on the production line, at the final step when they put a label on the product. In this way, they could actually produce a better quality instrument, with improved performance capabilities, and at the same time even sell it for less! His idea was applauded, and the company implemented his plan.
Unfortunately, one serious mistake was made. Instead of having the magical command to configure the mode check first, to see if a value had already been set, the command just went ahead and changed it without looking. This meant it could be changed, again and again. One day the peasants discovered this magical incantation on their own. And instead of just using it, and being grateful for their good fortune, they began to mock and humiliate the company. Some accused them of being deceptive, and selling the "same thing" for two different prices. Others proclaimed how they had been "caught with their pants down", which was very embarrassing. The company lost face.
As a result, the company decided to think long and hard about their future products. They made changes to make certain that they would not be embarrassed again. More importantly, they spent their time thinking about such things, rather than spending it to improve their products. No longer could the peasants enjoy the enhanced capabilities. And their prices went up, casting a shadow across the lands. There was much weeping and wailing, and knashing of teeth. The best of days were behind them.
THE END."
At least, that's the way I remember it. ;)
- Mark
Mark_O:
--- Quote from: anli on April 01, 2010, 12:48:19 pm ---The thing is, this DSO is the only scope in hand, and, OTOH, I'm not experienced in digital/smd area (my experience lies in analog audio/through hole components, sorry). At such circumstances own attempts seem to be too risky, and I'll wait for more experienced fellows.
--- End quote ---
You are completely correct. I wouldn't do so either, in your position. I should have been more clear in saying this was an avenue that was open... though someone else may have to blaze the trail first. The important point is that I'm dubious there is any way to achieve your goal without opening the unit and modifying it physically. No nifty magical SCPI command.
For myself, I have no incentive to open my Rigol, which is already a 100 MHz unit (DS1102CD). I'd probably wind up breaking a knob, or marring the faceplate.
- Mark
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