Data Sheet

PCB Layout
121
Correctly placed Keepout
The default for the keepout is that it applies to all layers. However, after placing the
graphic on the keepout layer, you can right click change it to apply only to a specific
copper layer from the resulting context menu. This can be very useful on more
complex or densely packed board.
We have a similar problem around the temperature/humidity sensor (U3). We are going to want
a slot machined on the board to cut the thermal path and reduce the measurement errors of the
sensor (we want to measure environment temperature, not the one conducted by the PCB). We
therefore need to ensure that no tracks are placed in the area we are going to slot through:
1) Select the 2D Graphics rectangle icon and then change the layer to be KEEPOUT.