What setting must be checked in Dante Controller for a device chasing an external clock?

To ensure that a device is correctly chasing an external clock in Dante Controller, it is essential to check the setting that allows the device to synchronize with the external clock source. Marking the "External Clock" checkbox explicitly configures the device to listen for and follow an external clock signal rather than relying on its internal clock source or selecting another device as the master clock.

When this option is enabled, it allows the device to properly synchronize its timing references, which is critical for maintaining audio quality and preventing issues such as drift or dropouts, especially in installations where multiple devices need to work in harmony. This is a vital part of networked audio setups, particularly in complex environments like large venues or studios.

The other answer choices do not pertain to the specific operation of syncing to an external clock. Some choices, like marking the "Preferred Master" checkbox, pertain to selecting which device will control the clock for the network, while factory resetting a device is unrelated to clock chasing settings. As such, checking the "External Clock" option is the definitive action needed to configure a device for the external timing source correctly.