Context
Use Transmission Mode to control how often the SU90 system shall transmit its energy into the water. For normal use, choose Maximum. If you choose Maximum, the SU90 system will transmit (ping) continuously and as often as possible.
If you choose Interval, you must define the time between each ping with the Ping Interval function. Ping Interval permits you to choose the time (in milliseconds) between each transmission (ping).