function packet_gain_modify_encode packet_gain_modify_encode(lane_id,modified_gain_db,) Create gain_modify packet Parameters lane_id Lane ID to control modified_gain_db Modified gain value Return Type Throws TypeError If lane_id is not number TypeError If modified_gain_db is not number RangeError If lane_id is over 80 RangeError If modified_gain_db is not in -80~80