thermo spectronic Helios Gamma Benutzerhandbuch Seite 27

STOP
Selects stop wavelength.
The Stop wavelength must be at least 4 nm greater than the Start wavelength.
The current spectrum will be lost if the Stop wavelength is changed.
PEAK TABLE
This selects the type of peak picking done automatically as part of the method.
Results are reported on the Peaks Page..
OFF
PEAKS
TRACK
RATIO
CORR RATIO
PEAK HEIGHT
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SCAN
: Select a wavelength between 194.0 nm (319.0 nm
for Delta) and 1100.0 nm.
: Select from OFF / PEAKS / TRACK / RATIO / CORR. RATIO /
PEAK HEIGHT.
Sets Peak Table to Off. No peaks information is produced as part
of the scan.
Picks the highest peaks in a spectrum up to a maximum of 10
peaks.
This function allows the Absorbance (or other mode) values to be
reported at up to 10 user selected wavelengths. To enter the
Desired wavelengths select PEAK TABLE TRACK then press VIEW
GRAPH.
You do not have to have a spectrum present on the graph to
enter the selected wavelengths. Press MANIPULATE and select
TRACK. For each wavelength move the cursor to the desired
position press ENTER. Once all the wavelengths have been
entered go back to the SCAN METHOD page and save the
method.
This function allows the ratio λ
at the end of the scan. To enter the desired wavelengths select
PEAK TABLE and press ENTER then select RATIO. A pop up box
Appears in which to enter the first wavelength. Enter the desired
wavelength and press ENTER. Repeat for the second wavelength.
Once all the method parameters have been set save the method.
This function allows the ratio of two wavelengths to be calculated
relative to a third wavelength (λ
of a scan. To enter the desired wavelengths select PEAK TABLE
and press ENTER then select CORR RATIO. A pop up box appears
in which to enter the first wavelength. Enter the desired
wavelength and press ENTER. Repeat for the second and correction
wavelengths. Once all the method parameters have been set save
the method.
This function allows the height of a peak to be calculated relative
To a local baseline rather than y = 0. To enter the desired
wavelengths, select PEAK TABLE and press ENTER then select
PEAK HEIGHT. A pop-up box appears in which to enter the
wavelengths required. λ
the peak. Once all the parameters have been set, save the
method.
English
/λ to be automatically calculated
1 2
−λ )/(λ −λ ) automatically at the end
1 3 2 3
and λ define the baseline, λ
1 3
GD Issue 1 (08/2000)
defines
2