To check the raw lamp output of your SpectroVis Plus or Go Direct SpectroVis Plus:
1) Make sure you have the correct version of software: Logger Pro 3.14 or newer, LabQuest App 2.7.2 or newer, Spectral Analysis 4.8 or newer.
2) In Logger Pro and LabQuest App, change to Uncalibrated Data mode.
a) In Logger Pro, tap on the rainbow icon just underneath the NEW and Open icons.
b) In LabQuest App, tap on the meter screen and then select Spectrometer mode. Select Uncalibrated Data.

In Spectral Analysis, Click on the Advanced Full Spectrum experiment and select Raw Data sensor mode.

3) Press Collect. Watch for a spectrum to appear and then press Stop.

Below is a set of sample spectra collected with various SpectroVis Plus spectrometers at various ages. A burnt out lamp is fairly obvious with a flat line. Feel free to use the other lines as indicators of your lamp age. However, use them with caution. Also note these are only applicable for SpectroVis Plus and NOT Go Direct SpectroVis Plus. The Go Direct SpectroVis Plus units have not been available long enough to collect such spectra.