Service Manual 1001 5015 / Rev. 4
2:9
Before the monochromator output there is a shutter with 3 positions, Open, Closed
and Filter. The closed position is used to block the light during the offset
measurement which is done prior to scanning the sample. Open position is used
during the sample scanning and Filter position is used during performance tests to
determine the wavelength accuracy compared to the factory status.
The monochromator is supplied with an EEPROM which stores the O- and P-
constants. These constants are obtained from the factory calibration and cannot be
altered or re-calibrated in the field. The EEPROM resides on a PCB underneath the
monochromator base plate. This PCB is therefore a unique part dedicated for each
monochromator and cannot be changed.
NOTE: The Monochromator is sealed and it is absolutely
forbidden to open it by other than FOSS personnel.
Fig. 2:7
1
Lamp fiber
4
Output fiber
2
Grating
5
Motor/Encoder
3
Shutter
6
PCB with EEPROM
Summary of Contents for Infratec 1241
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