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Signal Generator advice

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AndyC_772:
You write as though you're aware of a specific firmware bug in the DG4062 that should be stopping me from using it. What bug are you referring to?

I'm aware of just one, the duty cycle measurement which forms part of the frequency counter feature doesn't work properly. Mildly irritating? Sure. Significant effect on the usefulness of the instrument for every other purpose? Of course not.

My 4062 came from Telonic Instruments who have provided excellent support.

Wuerstchenhund:

--- Quote from: AndyC_772 on March 07, 2013, 06:49:55 am ---You write as though you're aware of a specific firmware bug in the DG4062 that should be stopping me from using it. What bug are you referring to?
--- End quote ---

I'm not aware of a specific bug in the DG4062 (and I never said I was, that's your mis-interpretation). However, looking at other Rigol products, their firmware support is still lacking.


--- Quote ---My 4062 came from Telonic Instruments who have provided excellent support.

--- End quote ---

So how many support cases have you opened with them?

Anyways, they are a reseller, and while it's of course great if they do support the products they sell, there is only so much a reseller can do (and he might not even be around any more in two or three years time). They simply can't replace proper manufacturer support which is required for many things.

I agree that all this may be a non-issue for hobbyists, but as soon as you have to rely on your equipment to make money then these things become very important and are worth spending a bit more for a device which is adequately supported and reliable. I probably wouldn't mind buying Rigol for my home lab (it's just that other options looked much better so far), but I wouldn't touch it with a barge pole for my professional work. It's just not good enough.

Wuerstchenhund:

--- Quote from: EEVblog on March 06, 2013, 12:49:47 am ---That  would be the same Agilent whos low end scope is actually a rebadged Rigol?  ;)

--- End quote ---

I didn't say I would by anything from Agilent. The Rigol clones would most certainly be off my list, as would be LeCroys WaveAce/WaveStation products (relabelled Siglent/Atten).


--- Quote ---Agilent actually (unwittingly) helped create what Rigol is today buy not only re-badging Rigol's gear 5-6 years back, but also helping them with manufacturing quality and I believe some R&D as well. It ended up being of much more benefit to Rigol (who is now a major competitor, and also still an OEM) than it was to Agilent
--- End quote ---

That may be the case (it's at least better than what LeCroy did/does with Atten/Siglent gear), and the hardware quality of current Rigol kit is apparently very good. However, they still haven't realized what 'support' really means, or that software plays a similarly crucial part to a product than hardware does.

I'm sure if they stop ignoring the world's largest economy (EU), provide proper support facilities there, fix the software issues and stop bitchering about warranty for Rigol products bought from other parts of the world then they might be taken seriously by professionals. Until then they will remain a brand for hobbyists.

araugh:
So am I a hobbyist because I bought a Rigol, or did I buy a Rigol because I'm a hobbyist?

saturation:
A simple RC circuit provides a phase shift between current and voltage.  You can rig that up for less than $1 using any single channel signal source you have.  The key problem is if you require a strict equal output impedance from both sources.

http://www.physics.ucla.edu/demoweb/demomanual/electricity_and_magnetism/ac_circuits/the_90d_phase_shift_of_a_capacitor.html

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