Milestone Srl MA213-003 – DMA-80 EVO – User Manual
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5.16.2 Service-Detector
In this page the Administrator can check the detectors signals. In according with the spectrophotometer
configuration, it is possible to have two signals represented by two voltage values and two green lines in
the graph.
There are two different values of detector voltages: Offset and Gain
- the Offset is the signal of the detector when the lamp is OFF
It must be stable at around 50mV ± 10mV.
- the Gain is the signal of the detector when the lamp is ON
Milestone set this value at around to 4,000V but it can change during the time because of heating of the
lamp, humidity inside the cuvette, etc.). The minimum acceptable Gain signal is set to 2V, after that the
software does not permits to run measurements.
It is also possible to have a further detector signal, “Double Beam”, if the configuration so provides. It is
represented with a blue line in the graph
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