Yes, my summary question is — if we install the pre-amp board, do we now have 16 separate analog inputs or still just 8?

I guess it may come down to whether the pre-amp board has its own A/D converters or does it plug into the existing analog bus and use the converters already present.

I think it would be a lower cost if it used the existing converters and was purely a pre-amp analog board.  We wouldn’t have lost anything (still have 8 analog inputs) and if they use a DB25 connector for the new board, it’s simple matter of installing the board and attaching our existing DB25 connector to the new board instead of to the mainframe.