What should be maintained during the power transition to the secondary power supply?

Maintaining signal integrity during a power transition to a secondary power supply is crucial to ensure that communication and data transmission remain stable and uninterrupted. When transitioning power sources, there can be fluctuations in voltage and current that may disrupt signals. Ensuring signal integrity protects against data loss or corruption, which could compromise operations that rely on real-time data communication, such as those in emergency response situations.

The other options, while they may be relevant in different contexts, do not specifically pertain to the critical aspect of signal transmission during a power source change. Temperature settings, for example, are important for certain equipment but do not directly impact signal quality. Water pressure might be relevant in firefighting or plumbing contexts but is not applicable to power transitions. Lighting conditions might matter for visibility but do not affect the integrity of signals transmitted during a power switch. Therefore, the focus on maintaining signal integrity is essential for operational reliability.