Prerequisites
Prepare properly a calibrated attenuator and an optical power meter.
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 The single-fiber bidirectional optical module is multimode. Use the multimode fiber.
l The fiber interface and the optical connector on the front panel of the optical interface board
must be clean and properly connected.
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 Connect the device properly based on Figure 1.
Figure 3-42 Diagram of detecting the input optical power of the single-fiber bidirectional optical
port
Peer device
Optical power
meter
T
x
R
x
接口板/主控板
UA5000
Tx
Optical
interface
Optical
interface
RX/TX
ODF
ODF
ODF
ODF
Tested
port
RX/TX
Adjustable optical
attenuator
Step 2 Set the detecting wavelength of the optical power meter based on the working wavelength of
the detected port.
Step 3 On the UA5000, configure the channel from an uplink port to the detected port.
Step 4 Increase the value of the optical attenuation gradually. When a small number of packets are lost,
decrease the value of the optical attenuation gradually. Stop adjusting the optical attenuation
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.
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