What a fun afternoon was had by Filiberto, Hugo and I.  Lot's of little problems confounding troubleshooting of main problem.  To start with the Binary I/O on Ham3 Gain and Filter stages did not appear to be functioning.  The MEDM button was pressed with no effect on the hardware.  Started trouble shooting and the problem was confounded by cables with missing pins. Pin 5 missing of some of the 9 pin cables that were substituted into the system because not all the cables for the Ham arrived. This lead us down the wrong path for a while.  When this was finally discovered we then had problems because the model uses the first binary I/O board and the DWGs called out the second.  That or my understanding of the backplane is wrong.  Of course in the earlier rounds of troubleshooting we used every combination of cable from the BIO boards thinking this was the problem but with the ground pin missing we could not tell. So we also swapped the two BIO cards in the chassis just for fun.  In the end we have installed 6 9 pin straight thru cables and everything seems to be working.  Rather frustrated it took so long.