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SPIRE Design Description - Research Services

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Draft <strong>SPIRE</strong> <strong>Design</strong> <strong>Description</strong> Document<br />

(ii) they have mechanical supports for the free runs from the detectors down to the <strong>SPIRE</strong> optical bench<br />

and for the free run from the FPU to the JFET boxes;<br />

(iii) the length is minimised as far as it practical;<br />

(iv) the supporting structure is as rigid as is practical.<br />

The harnesses that are contained within the FPU are shown in Figure 4-52 while the harnesses that run from<br />

the FPU to the warm electronics is shown in Figure 4-53.<br />

Note:<br />

J1-J15 FPU connectors<br />

are baselined as being<br />

replaced with cable to<br />

wall feedthrough via<br />

two interface plates.<br />

HERSCHEL<br />

<strong>SPIRE</strong><br />

FPU<br />

INTER-SUBSYSTEM<br />

HARNESS<br />

JD<br />

28/3/01<br />

Photometer Spectrometer<br />

HS Sorption<br />

Cooler<br />

HS Spect.Stim. J1<br />

HS BSM +<br />

Phot. Stim.<br />

HS<br />

SMEC<br />

HS FPU<br />

HS Shutter<br />

SLW BDA<br />

SSW BDA<br />

PLW BDA<br />

PMW BDA<br />

PSW BDA<br />

110<br />

J1<br />

J1<br />

J2<br />

J1<br />

J2<br />

J1<br />

J2<br />

J3<br />

J4<br />

F16<br />

F17<br />

F18<br />

F19<br />

F21<br />

F23<br />

F24<br />

F20<br />

F25<br />

F22<br />

F26<br />

F27<br />

Figure 4-52 – <strong>SPIRE</strong> harnessing inside FPU.<br />

J1<br />

J2<br />

J1<br />

J2<br />

J1<br />

J2 J1<br />

J1<br />

J2<br />

J1<br />

J2<br />

J1<br />

J2<br />

F15<br />

F13<br />

F11<br />

F9<br />

F7<br />

F5<br />

F3<br />

F1<br />

FA<br />

FB<br />

FC<br />

FD<br />

FE<br />

FF<br />

F14<br />

F12<br />

F10<br />

F8<br />

F6<br />

F4<br />

F2<br />

J15<br />

J14<br />

J13<br />

J12<br />

J11<br />

J10<br />

J9<br />

J8<br />

J7<br />

J6<br />

J5<br />

J4<br />

J3<br />

J2<br />

J1

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