| Customer
support |
|
| My
circuit will not route completely automatically |
|
| With some circuits, particular ones that have
lots of components, the automatic router may not have the room
to convert all of the
net connections into copper tracks. |
|
| Once finished, the software will
use green nets to indicate that connections that the user must
resolve. The presence
of green
nets does
not constitute an error, just that there
was not enough space
for a route to be automatically placed in the indicated position.
|
|
| You should note that the conversion of a circuit
diagram into a PCB layout is not meant to be a purely
automatic
process.
With many circuits you will be required to make modifications
to the PCB and/or adjust the positions of the components prior
to automatic routing. |
| |
| Hints and tips |
|
| The following hints and tips should help you
with circuits that cannot be routed completely automatically. |
|
 |
The number
of net connections routed will depend on the thickness
of the tracks chosen and also whether you are routing
on one or two sides of the board. For higher completion
rates, choose thinner tracks and/or two layer routing. |
|
|
If you are routing with
thinner tracks, it can also help to ensure that you are
using smaller component pads so that the tracks can be
routed through the legs of components, particularly ICs. |
|
|
To manually position
components prior to auto routing, you should convert
the circuit diagram to a PCB layout but not select the
automatic routing option. You can then move the components
before choosing the Route All Nets... command. |
|
|
Net connections are
locked by default to stop them being deleted by accident.
If you want to delete a net connection, you must first
uncheck the Lock Nets option. |
|
|
Once the automatic routing
has stopped, clicking
on the Undo button will reverse the automatic routing,
allowing you
to move
components
and try again (as
many times as required). |
|
| |
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