The OA module inside an EMR8 board provides the____function.

The Optical Amplifier (OA) module inside an EMR8 board includes a critical function called "gain locking." This function ensures that when channels are added, dropped, or experience fluctuations, the gain of the remaining channels stays stable. Without gain locking, changes in one channel's power could inadvertently affect the amplification of other channels, causing signal degradation and uneven performance. Gain locking maintains consistent output power levels and improves overall system stability, which is vital in dense WDM networks. This function helps avoid cascading issues during dynamic network changes and supports reliable service delivery in HCIP-Transmission systems.