Ultrasonic Range Finder

[nekng]

My team recently bought these ultrasonic range finders. We are having a few problems wiring and programming them.

Attched is a diagram that shows how we wired them.
To program them we used:

	if (run_count<2){
		rc_dig_out13 = 1;
	} else if(run_count >= 40){
 		rc_dig_out13 = 0;
		run_count =0;
		Get_Encoder_1_persec = Get_Encoder_1_Count() - last_count;
		last_count = Get_Encoder_1_Count();
		//printf("Sensor: %d \r", (int)Get_Encoder_1_persec);
	
	}
	printf("Sensor: %d \r", Get_Analog_Value(rc_ana_in01));
	run_count++;

However when it outputs all we get is the number 11. Does anyone know what is wrong?