SPIRE Design Description - Research Services

Draft SPIRE Design Description Document
Figure 3-2 Schematic diagram of the sub-systems of SPIRE contained on the Herschel SVM.
The only interface between the SPIRE subsystems inside the CVV and the WE on the SVM is via the 13
bulk head connectors (and associated harnesses) shown at the top of Figure 3-1. The SPIRE harnesses that
connect to the outside of the CVV connect to the WE on the left hand side of Figure 3-2. This schematic
shows the Detector Readout and Control Unit (DRCU), the Focal-Plane Control Unit (FCU), the Digital
Control Unit (DCU) and the electrical interfaces with the Herschel spacecraft.
Figure 3-3 shows a view of the FPU on the Herschel Optical Bench. Figure 3-4 and Figure 3-5 show views
of the photometer and the spectrometer with the various subsystems. A detailed description of the design of
all the systems of SPIRE is given in §4.
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