[time-nuts] Slightly OT: inexpensive USB analog-digital converter?
phk at phk.freebsd.dk
Fri Jan 18 17:25:37 EST 2008
In message <47912452.1060702 at xtra.co.nz>, Bruce Griffiths writes:
>Offset drift is significantly higher than for other sensors.
On the LTSR they've pinned out the reference, so you can calibrate
the offset out. I've done it, it's trivial.
>LEM also make dc fluxgate current sensors with 1ppm linearity and 50ppm
And I belive, they also make money on those.
For my needs (a 12 bit ADC) calibration is just fine.
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