Dark Current Test
The dark-current test measures the leakage current from each diode. The test is used to check for leaking diodes which may cause non-linearity at specific wavelengths. During the test, the slit assembly moves to the dark position, cutting off all light falling onto the diode array. Next, the leakage current from each diode is measured, and displayed graphically. The leakage current (represented in counts) for each diode should fall within the limits.
When
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Run the Dark Current Test with the recommended user interface (for further information see Online-Help of user interface).
Figure: Dark Current Test – Results 
Figure: Dark Current Test – Signals
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