[jonathrg]

Presumably there is an antialiasing low pass filter somewhere before JS gets to the data. I have a similar sample rate and it certainly didn't work at all for me.

[ErroneousBosh]

If the accelerometer samples at 50Hz, how could there be an antialiasing filter?

What would that filter look like?

[colanderman]

Anything physical which dampens higher frequency oscillations would act as an antialiasing filter.

[ErroneousBosh]

What sort of size do you think something that would damp 25Hz vibrations in something that weighs a gram or two would need to be?

[regularfry]

They have analogue AA filters just before the sampler.