[hpsdr] JANUS Updated (again)

[Lyle Johnson]

Well, phooey.

Looks like I have Janus backwards, for ATLAS to be arranged like Phil's 
drawing suggests!  This is based on Steve's latest drawing and my closer 
examination of ATLAS.

The PCB layout is looking at the board from the *top* (component) side. 
  Phil's drawing actually looks at the board from the *bottom* side. 
Thus, the PCB layout should have the IO connectors on the right as you 
look at the layout, not on the left as shown in Phil's plan view.

My apologies to the group.

Nonetheless, I'd like some feedback on the design just completed.  Not 
about choice of IO connectors, but on noise considerations, ground path, 
signal flow, etc.

And, if anyone knows where you can get blank PCI bus brackets, it would 
be useful to have a detailed drawing showing where default mounting 
holes should be.  I see a nice bracket at SIIG 
<http://onlinestore.siig.com/shopexd.asp?id=543> but no dimensions. 
This bracket <http://www.bracketsource.com/ME-391-2AH-B.htm> has 
dimensions but not indication where the PCB fits in relation to it.

Steve, I'll take a closer look at things and try to match your DIN 
connector location vis-a-vis the PCB outline, mirror imaged, of course, 
to take into account the left-right foo-pah.

Depressed in Mt Vernon


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