Huawei UA5000 - Page 74

Figure 3-40 Detecting the input optical power of an optical port
光接口
Peer device
Optical power
meter
T
x
R
x
接口板/主控板
UA5000
T
X
R
x
T
x
Optical
interface
T
X
R
X
Optical
interface
T
X
R
X
ODF
ODF
ODF
ODF
Tested port
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 a channel from an uplink port to the detected port.
Step 4 Increase the optical attenuation gradually. When a small number of packets are lost, decrease
the optical attenuation gradually until no packet is lost in a short period (method: ping the peer
device on the UA5000 to check the packet loss condition). Then, stop adjustment the optical
attenuation. (Note: Adjust the attenuation slowly and stably as much as possibly.)
Step 5 Unplug the RX patch cord of the detected port, connect the unplugged RX patch cord to the
optical power meter, and record the input optical power of this point through the optical power
meter.
Step 6 If the detected optical power value does not meet the technical requirements (see the following
table for the detailed technical specifications), check whether the detecting wavelength set by
the optical power meter is consistent with the transmit wavelength of the optical module. In
addition, check whether the connection point of the optical port is loose.
Step 7 After the detected optical power value meets the technical requirements, resume the fiber
connection of the detected port.
----End
Result
The input optical power of the measured port complies with the technical specifications.
The technical specifications for the optical power are as follows:
1000Base-Lx
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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