VME FMC Carrier VFC News
VME FMC Carrier VFC
23-06-2010: Layout files received and being reviewed
The PCB layout is finished and is being reviewed. If no major issues will be found the production will be launched for the beginning of July. Layout time was about 320 hours.
VME FMC Carrier VFC
22-06-2010: Layout almost finished
The PCB layout is almost finished. The stackup has been changed to have no two signal layers next to each other (reducing crosstalk).
VME FMC Carrier VFC
18-05-2010: All 0.1% resistors replaced by 1%
When going through the bill of material, we found that over 15 0.1% resistors where used. A more careful analysis found out that standard 1% resistors could do the job. This will be modified before PCB layout is finished.
VME FMC Carrier VFC
11-05-2010: All active components ordered
All active components have been ordered and the component list has been re-verified (one component was forgotten to be ordered). Unfortunately the ZBT RAM used will become obsolete as orders will only be possible until November 2010.
VME FMC Carrier VFC
10-05-2010: Vadj fixed to 2.5V for FMC slot 2
After careful checking it was made possible to fix Vadj of FMC slot 2 to 2.5V so that the ADC card under development can also be used on this slot.
VME FMC Carrier VFC
28-04-2010: Vadj will be fixed to 3.3 Volt for FMC slot 2
Because of a problem with the I/O levels of the different banks in the Xilinx, Vadj will need to be fixed at 3.3 Volt for Slot 2. The schematic will need to be changed for this as otherwise Slot 2 could not drive LVDS signals.
VME FMC Carrier VFC
The layout work started week 15.
The layout work started week 15. It was possible to place all the desired components on the front panel, it remains just to verify the tolerances. From a preliminary placement the board seems dense but the only 2 components that seems to cause some troubles are the 2 inverting DC/DC.
VME FMC Carrier VFC
24-03-2010 - PCB layout started
The schematics have been sent to the layout office. The PCB layout work will start in the first week of April and will be ready by the end of May, ready to be reviewed before production.