[Repairs] Rigol 'scopes for Repair centers?

[Nicole Lee]

from what we've heard from a couple countries, being able to do on-board
repairs is necessary. still, i'm not sure it's something US repair centers
would be doing.

-nikki

On Thu, Jun 12, 2008 at 11:12 PM, Ian Daniher <it.daniher at gmail.com> wrote:

> What repairs would be carried out that necessitate a scope?
> In my opinion and [limited] experience, the individuals with enough skill
> to use a logic analyzer and oscope to determine the bug, and then a hot air
> rework station and soldering set to fix the chip, could probably earn enough
> money during the time period required to purchase a new XO(or at least a new
> motherboard), therefor making it fairly illogical for first-world repair
> centers to invest in such machinery.
> Thoughts?
> --
> Ian
>
>
> On Thu, Jun 12, 2008 at 10:39 PM, Nicholas Bodley <nbodley at speakeasy.net>
> wrote:
>
>>
>> NKC Electronics carries them; also their logic analyzers. See
>> <http://preview.tinyurl.com/4nskva>
>> (Preview is a security measure.)
>>
>> When you get to some detail, they look very nice, indeed.
>>
>> Tried to download the manual (PDF) for the 25 MHz 'scope, and needed a
>> username and password.  I think I clicked on Help, or such, and saw some
>> Chinese!
>>
>> Company site (they're Chinese):
>> <http://www.rigolna.com/default.aspx>
>>
>> Now, the $65,536 question: How good are they? I Googled a bit, and a
>> rather offhand comment (sample of one) was that it's good for a knockabout
>> 'scope; same person had a couple of Agilents.
>>
>> Also was reminded that for decent reconstruction, you need several samples
>> per cycle (of a sine wave). I don't know, but the recommendation was a
>> sample rate about 10x the upper limit you expect to see -- that would
>> imply 1 Gsa/s (Gsa?) for seeing up to 100 MHz.
>> Many years ago, Tek. had a sine interpolator, apparently to try to create
>> a decent displayed waveform with fewer samples. No idea what it did for
>> pulses. IIrc, it was user-selectable.
>>
>> --
>> Nicholas Bodley
>> Waltham, Mass.
>> A  1 mHz clock puts out one pulse every 1,000 seconds.
>> HP made function generators that went down to 1 µHz.
>> Perhaps Agilent does, still.
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