Transducer options on DSM300 changed

[naz14]

Thanks for the input Chuck. By the way, the depth half of the zip cable was untouched. Only the temp/speed half was cut and spliced in the Airmar splice/junction box. Maybe I will see if I can find another transducer to borrow to test the DSM. I just don't understand how changing the depth/temp sensor only could have impacted the DSM's ability to recognize the B744V transducer and come up with a new list of 1kw transducers, unless the DSM coincidentally failed at the same time I changed out the temp/speed sensor per Airmars specific instructions?