User's Manual

Table Of Contents

NOTE

l The transmission distance of an optical module is 10 km, 15 km, 20 km, 40 km, or 80 km.

The optical modules with a longer transmission distance have a higher transmit power. If an

optical module with a long transmission distance is used for short-distance transmission, the

optical interface cannot turn Up because the transmit power is too high. The high transmit

power may even burn the receiver of the remote optical module. To reduce the transmit power

in this situation, use an optical attenuator between the optical module and optical fiber.

l Optical modules with different speeds are available, for example, 155 Mbit/s, 622 Mbit/s,

and 1.25 Gbit/s. It is recommended that you use an optical module with the same speed as

the optical interface to ensure efficient optical transmission.

3. If the interface remains Down, contact Huawei technical support.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 4 Hardware Failures

Issue 03 (2015-05-18) Huawei Proprietary and Confidential