Hi,

> Bob Ammerman wrote:
>
> >8. More advanced triggering for the logic analyzer: at least 2 stages
with
> >don't cares for each stage.
> >
> >
> Can someone explain what this is?  Never having used a logic analyzer, I
> do not understand what "2 stages" means.

    Sometimes you want to trigger on more "complex events" than what can be
described by just one moment. For example: if you want to trigger at the
beggining of the first bit on a serial data stream and not at the start bit
beggining. You would set a 2 stage trigger to trigger when the signal goes
from 1 to 0 and then from 0 to 1... That will happen exactly at the end of
the start bit and the beggining of the first bit.

    I am not sure if that is clear enough but the basic idea is to be able
to trigger when you have a set of events in consecutive moments of the
signal you are trying to looking at.

Best regards,
Alexandre Guimaraes


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