thermo spectronic Helios Gamma Benutzerhandbuch Seite 31

MODE
ABS
%T
PEAKS
FUNCTION
PEAKS
RATIO
CORR RATIO
PK. HEIGHT
For RATIO and CORR RATIO, enter the wavelengths as prompted. All results can be
viewed by pressing
PEAKS
RATIO
CORR RATIO
PK HEIGHT
ORIGINAL
This removes any manipulation and displays the spectrum as originally collected
and specified by the scan method.
TRACK TABLE Page
* TRACK LIST *
MARK ABS (A) WAVELENGTH (nm)
1 0.472 447.0
2 2.002 463.0
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SCAN
: Select from ABS / %T.
Selects Absorbance.
Selects % transmittance.
This option enables the spectrum to be
automatically searched for peaks. Move the cursor
to one of the options and press ENTER to perform a
search. When the search is complete the spectrum
is displayed with the peak positions marked. For a
peak to be found there must be more than 15 data
points between that point and a previous peak.
VIEW RESULTS.
Marks the 10 highest peaks.
Calculates the ratio λ
1
Calculates the ratio (λ
Calculates the peak maximum relative to a local baseline.
The list shows the y-axis values of the spectrum for
the wavelengths marked during TRACK. The
measured values will be ABS, %T, or INTENSITY
depending on the current mode.
VIEW GRAPH - Switches to the TRACK page.
PRINT LIST - Prints the list on the selected printer.
CHART OUTPUT – Plots the spectrum on an analogue
chart recorder.
SCAN GRAPH - Returns to the SCAN GRAPH page.
English
/λ
2.
−λ )/(λ −λ ).
1 3 2 3
GD Issue 1 (08/2000)