Operating Instructions
Measurements With MAVOSPHERE
Integrating Sphere 1/07.14
This document describes the measurement procedure for MAVOSPEC in combination
with MAVOSPHERE 205, MAVOSPHERE 500, MAVOSPHERE 1100 and
MAVOSPHERE 2000.
1 Configuration of measurement workplace
Equipment used for the measurement consists of:
MAVOSPHERE together with spectrometer MAVOSPEC
USB source controller (sphere controller)
PC with installed and configured GL Spectrosoft
During factory calibration process, the calibration profile for MAVOSPHERE had been
stored in memory of spectrometer used for calibration. MAVOSPHERE gives correct
results only when used together with the spectrometer containing the valid profile for
this specific sphere.
Before executing measurements the sphere adapter must be mounted on MAVOSPEC
and then spectrometer must be installed in an appropriate port of the sphere.
Afterwards the spectrometer has to be connected to the PC via USB cable.
The auxiliary light source, which is part of the MAVOSPHERE, should be connected to
the sphere controller with the Jack connector. The sphere controller must be connected
to the PC with USB cable as well as to the power. The power switch should be turned
on.
Please check the number of COM port on PC which is associated with the sphere
controller. This number must be configured in GL SpectroSoft as described in chapter 2
before the measurements could be executed.
Before actual measurementscan be executed, the dark current calibration procedure
must be done. The dark current procedure is described in the MAVOSPEC manual.
GOSSEN Foto- und Lichtmesstechnik GmbH 2
2 The calibration of the self absorption
Before further steps, the support for the sphere controller must be enabled in the
MAVOSPEC settings.
Press device preferences button to edit device settings.
GOSSEN Foto- und Lichtmesstechnik GmbH 3
In order to enable sphere controller port click the box "Sphere controller settings" and
then type in the proper COM port number.
NOTE: If you do not know the port number of COM port, run Windows Control Panel/
Devices and Printers and check the USB <-> Serial COM port No.
Make sure that the dark current calibration has been done.
NOTE: When making dark current calibration, cover the entrance aperture in the sphere
to cut off the ambient light.
GOSSEN Foto- und Lichtmesstechnik GmbH 4
When the proper adapter is mounted to the MAVOSPEC, the Menu "Sphere Correction"
will be displayed in Quick config panel.
Before performing the actual self-absorption procedure, start the procedure with the
open sphere and check if the auxiliary light source is being turned on during the
measurement, as well as the yellow diode on Sphere Controller. If not, the wiring of
Sphere Controller as well as settings of COM port has to be checked.
When the auxiliary light source works correctly, remove the DUT (Device Under Test)
from the sphere together with the post, open Sphere correction dialog once again and
click the Next button.
NOTE: Cover the entrance aperture to cut off the ambient light.
GOSSEN Foto- und Lichtmesstechnik GmbH 5
Measurement screen.
GOSSEN Foto- und Lichtmesstechnik GmbH 6
In the second step install the DUT. The measured light source (DUT) has to be switched
off. Only the auxiliary light source mounted in MAVOSPHERE will be used for this
measurement. Run the measurement by clicking the Next button.
The next step is to specify the name of the correction file. The software by default is
suggesting the existing name from the list. You can copy the name of the correction file
by clicking the existing name. When the name is set click the Finish button.
At this stage it is also possible to remove unwanted existing correction files. Select the
file and click Delete selected button.
GOSSEN Foto- und Lichtmesstechnik GmbH 7
The new correction file will be available on the Sphere correction list in Quick Config
panel.
GOSSEN Foto- und Lichtmesstechnik GmbH 8
3 The actual measurement of light source
Now the device is ready for the actual measuring of the light source (DUT). Connect
measured light source to the power, check if the right correction is selected in Sphere
correction list and start the measurements.
The self absorption procedure should be carried out each time when the
absorption of elements mounted in MAVOSPHERE is changing, e.g. another light
source is mounted, or position of measured light source in the sphere is
significantly changed.
GOSSEN Foto- und Lichtmesstechnik GmbH 9
.
Printed in Germany – Subject to change without notice
GOSSEN Foto- und Lichtmesstechnik GmbH I Lina-Ammon-Str.22 I D-90471 Nürnberg I Germany
Telefon: +49 911 8602-181 I Fax: +49 911 8602-142 I E-Mail: info@gossen-photo.de
www.gossen-photo.de
GOSSEN Foto- und Lichtmesstechnik GmbH 10
Loading...