© PSI (Photon Systems Instruments), spol. s r. o.
26
9.4
DATA TRANSFER AND VISUALIZATION
To download, visualize and further process of the measured data, please follow the next instructions:
1.
Perform the measurement and connect the PolyPen device to the computer.
2.
Launch the SpectraPen software and
Connect
the device. Go to
Device > Connect
.
3.
To visualize the stored data use the
Download
function to transfer your data from the PolyPen device to
your PC. Select icon on left side of screen or go to
File
and select
Load
if you want to process data
stored in PC.
4.
All data stored currently in the PolyPen device will be shown in the main window view. The data are
logged with the time of measurement.
Please note, that if there are no data stored in the memory, the download function is not available.
5.
Visualization modes:
Scope
mode window is always displayed at the first (Fig. 19). To visualize the
measured data in transmittance or absorbance mode, go to
Transmittance
or
Absorbance
bookmark
(Fig. 20, Fig. 21).
Scope:
the measured data are normalized to dark spectrum scan. This mode is ideal for
visualization of measured spectra of external light sources.
Transmittance:
the transmittance mode corresponds with reflectance in case of PolyPen
device. The measured spectral data are normalized to the white calibration standard by the
linear calculation:
T
=
I
/
I
0
, where
I
means the signal measured from the sample and
I
0
is the
ideal reflectance signal from the standard.
Absorbance:
The measured data are normalized to the white calibration standard as the
logarithmic ratio:
A
= log(
I
0
/
I
). This visualization mode does not have a special meaning in case
of PolyPen device, as this function is important for the trans-illumination geometry
measurement in PolyPen-Aqua.
Fig. 19 Scope spectra
