What is typically the first step to take when adjusting an optical receiver?

Turning on the optical receiver is typically the initial action taken because it allows the device to begin its self-diagnostic processes and initialize its operational parameters. Once powered, the optical receiver can perform necessary functions such as detecting incoming signals and preparing to establish a proper connection with the optical interface.

Once the receiver is powered, technicians can proceed with additional steps such as connecting the optical interface and calibrating the optical detector, which are essential for ensuring optimal performance but cannot be effectively executed until the receiver is powered on. This sequence is crucial because a non-functional receiver would not provide any meaningful feedback or response, making any adjustments to other components premature and potentially ineffective.