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The Rigol DS1052E
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JimBeam:

--- Quote from: Simon on March 15, 2010, 05:21:35 pm ---So when will we have some instructions on how to do this ? cmon this has got to be shared

--- End quote ---
Still didn't get it? It's easy as 123, no instructions needed - just call your device the right name (DS1102E) and serialnumber (DS1EDxxxx)
with the "secret serial commands" via the NI-VISA interface (see entry from bushing a few posts above)...

Sorry, I won't post a patch program here - this seems a bit too hot to me, though even this would be possible 8) ....
Simon:
ok so just to point out I'm useless at programming and that sort of thing the most I can currently handle is basic on a pic (although I'm hoping to improve). are you saying that you plug the rigol into a pc and rewrite the values via an interfacing program ?
Mark_O:

--- Quote from: JimBeam on March 15, 2010, 01:31:25 pm ---At least, the SYSTEM INFO page states so  ;D, and when you look at this I would say YES!:


* the lowpass switching diode (I did not find a SMD part with "FC" mark, but I guess now it's only a switching diode) is reverse biased with around 5V when BW limit is OFF (see diagram, it was forward biased with 100mV before...!)
* the timebase goes down to 2ns/div
* an 80MHz signal shows about the same amplitude as a 50MHz signal, a 150MHz signal is attenuated by only about 5-6dB
I am not sure, if the circuit of the 1052 and 1102 are indeed identical, but for me it is identical enough  ;D

--- End quote ---

Jim, congrats on putting 2 and 2 together.  Good luck on the deluge of people now wanting you to do a trivial operation for them automatically, and an endless stream of questions.

One very quick test you can always perform, to confirm BW extension unambiguously, is simply check the rise time on a very fast pulse.  You should see that it has dropped from ~7 nS to ~3.5 nS.  (I'd recommend just using 50-ohm BNC cables for this, and not a capacitive probe.)  When I check it on my DS1102CD from an HP pulse-gen with ~500 pS risetimes, I see ~3.8 nS, which is about right, considering source/cable/scope (square root of the sum of the squares).

Tip: After making this transformation with your magic wand, I'd recommend using the fairly slow Utility/Self-Cal procedure to complete the process.  Which of course is what they do at the Factory, after they decide which label to stick on the front.

- Mark
Mark_O:

--- Quote from: abbtech on March 15, 2010, 02:21:25 pm ---Nice work! I wonder what Rigol thinks about your clever hack.

--- End quote ---

Alan,

you're making the rather big assumption that Rigol knows anything about this hack.  Which, I can assure you, they do not.  Especially 3 hours after it was found.

They may stumble across it some day, but it's not like they have Support people reading the Forums and looking to help their customers.  Rigol has been one of the least customer-friendly companies I've ever encountered.  So unless someone here with the brains of a pinhead e-mails them (or contacts their US support people), to ask what they think about it, or "does this really work?", it probably won't be an issue for some time.

However, depending on how much publicity this gets (and I can see people with SFB broadcasting this far and wide in much more public forums), sales of 1052-models will rise, and 1102-models will eventually fall off.  Then Rigol will respond by removing certain commands without question-marks (I'll let you guess which ones) from their updated firmwares.

- Mark
Mark_O:

--- Quote from: Simon on March 15, 2010, 09:35:51 pm ---ok so just to point out I'm useless at programming and that sort of thing...

--- End quote ---

Are you capable of using one of the simple demo/test programs floating around, to just type in simple text commands and see the results?  Things like, e.g. ":INFO:MODEL?".  Having done that, are you then able to type the same command without a ?-mark, and supply your own replacement value?

Viola!

There isn't any "programming" required at all.  If there's not already a pre-compiled little App like this on your CD (I don't have an E or D-series unit to know), I'm sure someone will come up with a pointer to one that's already out there.

- Mark

P.S.  And yes, you have to plug in either a serial or USB cable to a PC (and select a port!) to be able to send these commands to the Rigols.
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