What are the two modes of operation mentioned for the device?

The two modes of operation referred to in this context focus on how the device interacts in its operational environment. RANGE typically pertains to the measurement or capability of assessing distances or the extent of influence of the device, which is crucial in applications such as targeting and weapon deployment within aircraft armament systems. HOLD usually indicates a state in which the device maintains its current parameters or settings without further changes until a specific action is taken or another mode is initiated. This dual mode allows operators to effectively manage and utilize the device's functionalities under varying circumstances, ultimately ensuring optimal performance during missions.

In contrast, the other options do not accurately reflect the operational modes relevant to the context of aircraft armament systems, as they describe functionalities that may not align with the targeted operational capabilities required in this specific field.