Products > Test Equipment
Sigkent SDG2000x time base accuracy
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trevwhite:
Hi all

The datasheet for the SDG2000x series states 1ppm accuracy and aging over 10 years to be 3.5ppm. Sounds very impressive. Anyone know if the unit lives up to this or what circuitry is inside that gives confidence in this figure?

Most other sig gens from rigol and siglent don’t give aging info from what I can see.

Thanks
tautech:

--- Quote from: trevwhite on January 10, 2023, 02:38:21 pm ---Hi all

The datasheet for the SDG2000x series states 1ppm accuracy and aging over 10 years to be 3.5ppm. Sounds very impressive. Anyone know if the unit lives up to this or what circuitry is inside that gives confidence in this figure?

--- End quote ---
Considering these are an 8yr old product and still a popular seller one has to realise buy now there is a wealth of data points and history with these products to have confidence in published specs.
Also note datasheets date stamps on thew HQ website that indicates they are recent revisions with latest specs.


--- Quote ---Most other sig gens from rigol and siglent don’t give aging info from what I can see.
--- End quote ---
SDG1000X has the least spec of 25ppm but it is their cheapest well featured ARB.
SDG6000X P8 has the exact same spec as SDS2000X
https://int.siglent.com/u_file/download/22_07_28/SDG6000X_DataSheet_DS0206X-E02C.pdf

trevwhite:
Thanks for the reply. Not sure silence from the general public can be taken to mean the impressive spec is true. I watched Dave’s tear down from years ago and he didn’t recognize the oscillator inside. The PCB looked dual tracked for a through hole module.


Be really useful to know what part is inside them?


Trev
colorado.rob:
I've had mine for 5+ years. I use the frequency counter and signal generator extensively. It is still typically < 1ppm (+/- 0.5ppm, depends on office temperature). If I need better accuracy, I use a GPS-DO as an external reference.
trevwhite:
Wow, that’s great. Thanks
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