Section 7 - Spectrum; Mode Specific Parameters - jenway 7315 Operating Manual

SECTION 7 – Spectrum
The spectrum measurement mode enables measurements of absorbance or % transmittance over a
range of wavelengths to be performed. The absorbance or % transmittance at each wavelength is
plotted graphically. Post measurement tools such as peaks and valleys analysis and spectral points analysis
can be performed. This operating mode can be used to partially characterise a sample.
7.1

MODE SPECIFIC PARAMETERS

2.500
ABS
1.000
-0.500
350
09: 02
Minimal Operating Menu
2.500
ABS
-0.500
350
09: 02
Expanded Operating Menu
The scan settings icon enables the graph y-axis, absorbance or % transmittance operating mode, start
and end wavelengths and scan interval to be set. The peaks and valleys threshold icon enables the
peaks and valleys threshold to be set. The peaks and valleys table icon enables the peaks and valleys of
the scan to be viewed in tabular form. The spectral points analysis icon enables points to be selected
from the scan for post measurement analysis.
Print/print settings
Results selection menu
Method selection menu
Autolog menu
Fig 7.1.1 - Expanded Operating Menu – Post Measurement
The spectrum minimal operating menu enables baseline
scans and spectrum scans to be performed without
changing any measurement parameters or settings.
Pressing the key adjacent to the JW icon opens the
expanded operating menu.
450nm 550
The spectrum expanded operating menu enables
measurement parameters to be changed. The utility
toolbar on the left hand side of the screen enables access
to printing, print setup options, results, methods and
autologging options. For more details on the different
450nm 550
functions of the utility toolbar refer to section 10.
2.500
ABS
-0.500
350
09:02
Baseline scan
Scan settings
Peaks and valleys threshold
Peaks and valleys table
Spectral points analysis
450nm 550
Scan sample
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