PerkinElmer AVIO 500, Руководство по оборудованию и обслуживанию для клиентов

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How the Echelle Spectrometer and SCD Work
information on each side of the peak. Thus the analyte peak and the spectral
background are measured simultaneously.
Electronic Processing of the Signal
On the Avio 500 the detector consists of 235 subarrays. The subarray consists of
three areas, the photosensitive area, the storage register and the output register (see
the following figure). Surrounding this subarray is a “guard band” that prevents
excessive charge from blooming onto any other subarray. Next to each subarray are
the output electronics and the interface logic. Since the output electronics are next
to the output register, the capacitance is extremely small and thus the readout noise
is very low (~13 electrons RMS). Since each subarray has its own interface logic,
it can be addressed and read out individually. All the address lines, output
electronics, and interface logic are covered by an opaque mask to block unwanted
radiation.
Figure 3-14. Detector subarray pattern.
Item Description
1 Photosensitive Register 6 Clock Lines
2 Storage Register 7 Control Lines
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9