University of Wisconsin-Madison / SSEC

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Presentation transcript:

University of Wisconsin-Madison / SSEC Iseg Board Layout Examination N. Kitamura University of Wisconsin-Madison / SSEC September 4, 2003

Top View The SMT components are located very close to the PMT mounting holes. Toroid underside Isolation AMP RG180 output 9/4/2003 N. KITAMURA

Coaxial Cable Attachment Insufficient shield-to-ground isolation. No board wash after manual soldering. Exposed and twisted center conductor for signal output. 9/4/2003 N. KITAMURA

Stacked SMT Capacitors 9/4/2003 N. KITAMURA

Corona Point Near the Highest-Voltage Traces 9/4/2003 N. KITAMURA

Bottom View Numerous corona points near the PMT pins (only some of them are marked.) 9/4/2003 N. KITAMURA