General > General Technical Chat

The Rigol DS1052E

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Simon:

--- Quote from: JimBeam on March 12, 2010, 06:11:47 am ---

Not exactly for all frequencies, but at least to the limit the amplifier poses - and not if shorted, but if the diode would be removed. (The caps and resistors still present lowpass filters on both pin8 and 9, but this should be neglectible).

Andreas

--- End quote ---

Well thats what i meant, obviously at some point due to the scope sampling rate and it circuit limitations there will be a maximum limit but a more natural one, it seems that the scope has been deliberately restricted

jgibson:
Even with the mod, this scope wouldn't be able to handle (due to BW) USB 2.0 (480mhz) eye diagram correct?

As I read that 1.5ghz of BW is need to get accurate USB 2.0 measurements.

Simon:
probablt not, the scope has a "bigge brother" capable of 100 MHz so it is the general concensus that the two are the same one but the 50 MHz version has had a limitation put on it

jgibson:

--- Quote from: Simon on March 13, 2010, 06:10:18 pm ---probablt not, the scope has a "bigge brother" capable of 100 MHz so it is the general concensus that the two are the same one but the 50 MHz version has had a limitation put on it

--- End quote ---

Thanks for the info, still a good deal for 100mhz.. just was hoping it met my needs.

Simon:
well we won't know until it is done, the scope samples 1GS/s (1 billion samples per second) in single channel mode so you have this to consider as well, with a 480 MHz signal that will be just over 2 samples per waveform, you will need at least 10 samples per cycle to acurately display the signal so thats 100 MHz although you may get way with a little more. There is also the actual limitations of the input circuitry

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