The board shown here is for the CBL2 or LabPro. The original CBL requires
either a slightly different board or a modified phone jack. Instruction
are included later for the modified jack.
Look at the printed circuit board (PCB)
and be sure you understand how it should be oriented. All of the components
(except for 4 rubber feet) will be placed on top of the board while
it is oriented as shown at left. You will then turn the board over
and solder from the bottom.
Notice that the board is "double sided,"
meaning that it has lines of metal printed on both top and bottom.
These metal traces are the "wires" which will conduct electricity.
Look closely at some of the holes on the
board. They are "plated through" so that metal goes through the board
at those points.
The board is also coated with a protective
covering, so that metal is only exposed in and around the holes. Some
of the largest holes have no metal traces, since they will be used
for mechanical connections, not electrical connections.
