Ocean Optics DH-2000 - Manual (Page 20)

3: Operating Instructions
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Warming Up the Lamp
The Deuterium lamp requires 10–15 minutes, while the Tungsten-Halogen lamp requires 5–10 minutes of
operation to reach a state of thermal equilibrium. During this warm-up period, the intensity of the UV
output power can vary substantially.
If applications require extreme intensity stability, the Halogen lamp should be warmed up for an
additional 15 minutes. Once warmed up for this amount of time, the lamp will reach specified drift values.