Connecting a spectrometer to the dh-3 – Ocean Optics Deuterium-Halogen Calibration Light Source User Manual
Page 11
1: Setup
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Connecting a Spectrometer to the DH-3
Before using a DH-3 Series light source for the first time, check for transport damage. Be sure to adhere
to all warnings on the unit and in this operational manual. Make sure you have your DH-3 light source,
your spectrometer, a CC-3 cosine-corrected irradiance probe, and Ocean Optics spectrometer operating
software.
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Procedure
Use the following procedure to connect your DH-3 light source to a spectrometer:
1. Loosen the set screw on the DH-3's SMA connector.
2. Screw the CC-3 cosine corrector onto the end of the fiber. The connection should be tight. Insert
the CC-3 all the way into the DH-3's SMA connector.
3. Tighten the setscrew on the SMA connector of the DH-3 with an Allen wrench. Connect the other
end of the fiber into the SMA connector of the spectrometer.
4. Plug in the power cord.
5. Turn the lamp on using the ON/OFF switch on the back of the light source.
6. Turn on the deuterium light and the halogen light on the front of the light source.
7. Allow the lamp to warm up for at least 15 minutes before using it. Place the DH-3 horizontally.
8. Insert the calibration disk that came with your light source into your computer. This disk contains
one ASCII file with the same information as the Lamp Calibration Reports that came with your
DH-3. The file name contains the lamp's serial number, followed by CC.LMP. Copy these files
to the desired directory on your computer.
9. Start your spectrometer operating software. See your spectrometer manual for instructions on
calibrating the spectrometer with the DH-3.
Tips
When you perform measurements with the calibrated spectrometer system, record a new
dark spectrum before each measurement. This minimizes the influence of a shifted dark
spectrum.
Use a log to monitor the operation time of the light source. Recalibration of the light
source after 50 hours of operation is recommended. A sample log is provided in
Appendix B: