[CA] [CA11] Adjust frequency on a CP470

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Horsemackerel,

The frequency adjustment percentage will increase or decrease from the center frequency of the transducer's range. Accordingly, should a CHIRP transducer have a range from 150-250kHz, then it's center frequency would be 200kHz. Increasing its frequency by 25% would cause the resulting transmitted frequency to be 1.25 x 200kHz, or 250kHz. Accordingly, increasing the percentage above 25% or decreasing the percentage by more than 25% would result in no additional increase or decrease t the transmitted frequency.

As the resulting frequency is an approximation, it is unlikely that a system change would be implemented to have the operator specify the desired frequency, as is may imply greater accuracy in the transmitted frequency than is actually supported.