ir protocols - unknown / send raw

Your emitter seems to be sending some sort of home-brew code.

I don't use the IR librairies so I can't help you with that. Maybe if you give the output from the following sketch, someone else will be able to help you.

int pin = 7;
unsigned long duration;

void setup()
{
  Serial.begin(115200);
  pinMode(pin, INPUT);
}

void loop()
{
  duration = pulseIn(pin, LOW);
  if(duration)
  Serial.println(duration);  
}

If not, you're going to have to do some reading.