Hello everyone,
I apologize for the delay, but I've been a little busy.
That was the first things I checked, the pin-out (Only three pins, 2, 3 and 5, which correspond respectively to the RX, TX, and GND), the cable and the connection settings.
This equipment uses the same pin-out and definitions of many others. The only difference to others is the connector, in this case it is a male connector.
After debating me for so long with the question, I'm starting to assume that I have a defective unit.
Best Regards