How to select b54 DFF3D as temp source?

[Tailin strange]

Looking to select my DFF3D B54 as the temp source for the tzt3 but not able to figure it out. The transducer isn’t an option under transducer setup. Does this transducer not have temp capabilities ? Everything else with it works flawlessly. It’s the only transducer I have in the system so would like to get temp data if possible. Thankyou for the help

 

[Johnny Electron]

Home - Settings - Initial setup - data source - SST (Sea Surface Temp) - Select DFF3D as the source.