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Measuring an Emission Spectrum with a LabQuest
You may use your spectrometer to measure the emission spectrum of a light source
such as an LED or a gas discharge tube. To do so, you may wish to purchase an
optical fiber assembly (www.vernier.com/VSP-EM) though this is not required.
Measure Intensity of Light Emissions
Intensity is reported in relative units with a range of 0–1.
Note:
The spectrometer is
not calibrated for measuring absolute intensity.
Aim the sensor opening or the tip of the optical fiber cable at a light source. Start
data collection. Tap the red Stop button to end data collection.
If the spectrum saturates, displaying flat and wide peaks near 1.0, increase the
distance between the light source and the sensor or tip of the optical fiber cable. You
can also adjust data-collection parameters by tapping Sensors and choosing Data
Collection. Reduce the Sample Time until peaks are less than 1.0.
Sample Experiments
There are several experiments available for use with the Vernier Emissions
Spectrometer. Visit our web site (www.vernier.com/vsp-em) for more information.
Specifications
Dimensions
10.1 cm × 7.0 cm × 4.5 cm
Power supply
USB powered
Detector
Linear CCD
Wavelength range
350 nm–900 nm
Wavelength reporting interval
1 nm
Optical resolution*
3 nm
Typical wavelength accuracy†
±2 nm
*as determined by the full width of half maximum of Hydrogen 434 nm peak
†as determined by Hydrogen peaks. For best accuracy use an optical fiber.
Warranty
Vernier warrants this product to be free from defects in materials and workmanship
for a period of five years from the date of shipment to the customer. This warranty
does not cover damage to the product caused by abuse or improper use.
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Vernier Software & Technology
13979 S. W. Millikan Way
Beaverton, OR 97005-2886
Toll Free (888) 837-6437
(503) 277-2299
FAX (503) 277-2440
info@vernier.com
www.vernier.com
Rev. 1/2/2014
Logger
Pro
, Logger Lite, Vernier LabQuest, Vernier LabQuest Mini, Vernier LabPro, Go!
Link, Vernier EasyLink and
other marks shown are our trademarks or registered trademarks in the United States.
All other marks not owned by us that appear herein are the property of their respective owners, who may or may not be
affiliated with, connected to, or sponsored by us.
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