Re: dtp-70 lamp - where?
Re: dtp-70 lamp - where?
- Subject: Re: dtp-70 lamp - where?
- From: Graeme Gill <email@hidden>
- Date: Sat, 22 Oct 2011 13:40:38 +1100
Roberto Michelena wrote:
> Well, supposedly factory recalibration would be needed for a new white
> tile, but not for a new lamp... the device calibrates itself (by using
> the white tile whose reflectance is recorded in the firmware) every
> time, and that's how it compensates for lamp aging... that's how it
> would also compensate for lamp change I guess.
That's true, but some instruments may have sanity checks around
the calibration, and may therefore fail if the lamp is too different
to what's expected. This is how they detect lamp aging.
Graeme Gill.
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