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Wavelength Calibration Adjustment,
DR/2000 Spectrophotometer Procedure, Versions 2.0 and 2.2
1.
Press:
SHIFT CONFIG/METH
Scroll with the Arrow keys
until the display shows:
CONSTANT ON
Note: Do not do this calibration
if your instrument has 1.261 or
1.27 version software!
5.
Press:
CLEAR/ZERO
The display will show:
100.0% T
Note: If the display does not
read within ±0.3 %T, press
again.
CLEAR/ZERO
2.
Press
three
READ/ENTER
times to accept the mode
choice and return to the
prompt.
METHOD #?
6.
Place the Calibration
Filter into the cell holder.
Close the cover.
Note: Align the key with the
notch in the cell holder opening.
continued
3.
Press
to select
SHIFT %T
the %T mode. The display
will show:
%T
7.
Slowly turn the
wavelength dial counter-
clockwise (decreasing
wavelength). Record the
wavelength where the %T
is highest.
5
850 nm
4.
With the cell
compartment empty and the
cover closed, rotate the
wavelength dial until the
small display shows:
850 nm
8.
Turn the wavelength
control clockwise so the
wavelength is at least 10 nm
higher than the wavelength
value recorded in step 7.
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