Hello ray18,
We don't have a power consumption specification for an Axiom 9 DV display because that's not a product model we make, only Axiom 9 or Axiom 9 RV, and most RV systems use the RV100 transducer.
The average power consumption difference however, between using an RV and CPT100 transducer will be minimal: the Axiom 7's page lists the power consumption difference between 7DV with CPT100 and 7RV with RV100 as being <0.2W, which I'm guessing is going to be smaller than the small natural variations in power consumption between any two similar test systems.
These are also theoretical maximum consumptions, the actual value will depend on things like water depth and the display backlight brightness.
Regards,
Tom