[adciv]

Ok, this gets a bit more interesting. Short version, not compatible. But you MIGHT still be able to use them. Long version as follows.

The Talon SRX motor controllers are designed to be able to read sensors directly on their input port. The CTRE Encoders you have are designed to be plugged directly into the Talon SRX motor controllers (cable is provided in each box. The Victor SP motor controllers cannot take sensor input directly.

If you want to use these without using a Talon SRX, you would have to connect these to the roboRIO (not trivial, and need to check voltage requirements) and read the data through there to command your Victor SP motor controllers.

If you have the budget, I'd recommend switching to the Talon SRx. Just make sure you're using the Talon SRX in CAN mode, not PWM.