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| | | | | | | | | | | | | | | | | | | | 3.3 Illumination Set up sequence | | | | | | | | | | After removing from the packaging, the monochromator and light source should be located on a firm level surface, and then set up following the steps below. 1. Install the lamp into lamphouse and connect one end of the four-pin lamphouse power lead to the lamphouse and the other to the manufacturers of power supply unit. 2. Attach the monochromator coupling to the light source, with the focussing assembly in place and the diaphragm fully open. 3. Connect the lamp power supply to the mains and turn on the lamp. Leave the unit to warm up for about ten minutes and then adjust the lamp focus and position to give a sharp image of the lamp arc at the centre of the focussing assembly. This ensures the maximum amount of light is focussed onto the input slits of the monochromator. | | | | | | | | | | * Unfocussed, uncentred * Unfocussed, centred » Focussed, centred | | | | | | | | | | 4. Turn off the lamp and remove the focussing assembly from the light source coupling before attaching the monochromator unit in its place. 6. Connect the light slide to the monochromator output coupling, positioning the end of the light guide flush with the end of the coupling, as shown below. Then slide the combination into the exit port of the monochromator, fixing in place when the coupling is fully inserted. | | | | | | | | | | 7. Power up both the light source and the optoscan and select a visible wavelength using the 'set wavelengths and times' function with real time adjustment on (see section 4.1). | | | | | | | | | | B__Page 8 | | | | | | | | | | | | | | | | | | | |
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