CHIRP is a function of the sounder (transmitter) in the head unit ...

A CHIRP signal can be transmitted thru any xducer (altho performance may or may not be satisfactory) ...

Transmitting a CHIRP signal thru a "non-Chirp" xducer is referred to as CHIRP "Lite" or "Cheap CHIRP" ...
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The product manual on the HB website does not list the available selections in the Connected Transducer menu ...

Can you list the choices here please so I can verify the correct choice for using the US2 ...??

Rickie