l The wavelength of the optical module is the same as that of the remote optical module.
l The transmission distance of the optical module is suitable for the actual distance
between the two devices.
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 through Hotline&Email.
Huawei AP8030DN & AP8130DN
Hardware Installation and Maintenance Guide 4 Hardware Failures
Issue 02 (2014-12-05) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
42
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