The value of BYTE2 can influence the sensitivity of the infrared proximity sensing. The default value is 10 which influences the carrier frequency / modulation frequency of the IR LED's, which is set approximately 37.5 KHz.
According to the data-sheet from the infrared sensor's manufacture, the most sensitive carrier frequency is at 38 KHz. The graphs show that if the carrier frequency is increased to 36KHz or reduced to 40KHz the sensitivity is reduced to only 50% as sensitive as it would be at 38 KHz.
By experimenting with different values it is possible to find a combination of frequencies that work best for your own specific project.
Products > Infrared Control Freak - 360 degree Proximity Sensor > 1. IRCF360 - Commands - Quick Reference Guide > 030 - Infrared Proximity sensing - 360 degrees >