ultrasonic sensor

i have maxsonar ultrasonic sensor with TX,RX,AN,PW pins.

i have tried using others'program to test distance using AN OR PW. both can work but can only dectect distance from 17cm to 6 meters. is there any way to dectect less than 17cm?

Btw, i want to use serial method to test distance, anyone has the program and connection?can explain a bit?thanks

What does the data sheet for the sensor say about minimum range?

dont know. but i want try serial monitor. anyone has the program?

jremington: What does the data sheet for the sensor say about minimum range?

1035700564: dont know.

Wrong answer