Thanks Nick for your great fast answer
For a start, it looks balanced (notice how the second channel is always the inverse of the first).
I notice that, it look like a RS485 Signal but it's not.One is the opposite from the other just.
The PIC is in a RFID circuit, the pic read the coil when the card is passed above it and the this data appears in RB0 and RB1 only.
Apart of this if I don´t know what signal I'm dealing with saleae is useless right?
It just can deal with signals that are implemented in the Analyzers right?