3.11.3 Detecting the Average Transmit Optical Power of a Single-
Fiber Bidirectional Optical Port
This topic describes how to detect the average transmit power of a single-fiber bidirectional
optical port from the local end to ensure that the average transmit optical power of the optical
port is in the normal state.
Prerequisites
Prepare properly a calibrated optical power meter and the patch cords with different splices.
Precautions
DANGER
Pay attention to personal safety. Do not look at the laser transmit port and the optical fiber
interface on the optical interface board.
l Select the dBm unit of the optical power meter for the detection.
l Use the single-mode optical fiber for the single-mode optical module and the multi-mode
optical fiber for the multi-mode optical module.
l The fiber interface and the optical connector on the front panel of the optical interface board
must be clean and be connected properly.
l The length of the patch cord used for the detection is 2-5 m generally. It is recommended
that you use the new patch cord.
Procedure
Step 1 Unplug the fiber of the detected port. Connect one end of the detected patch cord to the detected
port, and the other end to the optical power meter, as shown in Figure 1.
UA5000 Universal Access Unit Product
Commissioning Guide-PVM CLI 3 Stand-Alone Commissioning
Issue 04 (2012-06-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
69
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