[hpsdr] Mechanical considerations for ATLAS cards

[Alex]

I've got a few points to lobby the group on mechanical factors of cards on the ATLAS bus:

(a) Can we modify the 100mm high by 100mm wide form factor to be 100mm high by  200mm wide? 
(b) Can we state that the card orientation method is component side AWAY from the ATX power connector
(c) Can we modify any external connectors to be, looking at the card from the component side, on the left perpendicular side
(d) Any intra-chassis connections/headers (JTAG, etc.) would be located on the side parallel (top side of card) to the ATLAS connector.

If we did this we would have a little more area for circutry AND for us folks who want to rackmount by using off-the-shelf ATX computer cases (good 4U units are less that $120 in single quantities). Then we don't need to build a mount for the power supply, don't need to build a mount for the external connectors (just have a mounting bracket fabricated), and you can mount a LCD display in the open front drive bays.

Alex, N3NP