Tools and Meters
l
Single-mode optical jumper no longer than 1 m whose connector matches the ONU's
interface specifications. A new jumper is recommended.
l
Burst optical power meter
Impact on the System
When the transmit optical power of a PON port on the ONU is measured, the PON port is not
able to carry any service.
Precautions
DANGER
Do not look into the optical port or the optical fiber connector without eye protection.
Before or after measuring the optical power, you need to clean the connector of the optical fiber.
This is because if a contaminated optical fiber is connected to a normal optical fiber connector,
the connector will be contaminated, which leads to abnormal attenuation and reflection and thus
affecting optical path quality.
Procedure
Step 1
Configure the measuring parameters of the optical power meter.
l
Optical power unit: dBm
l
Wavelength (nm): 1310
Step 2
Remove all optical fibers connected to the PON ports on the ONU and ensure that the ONU is
not connected to any optical splitters or OLTs.
NOTE
When certain ONUs support network protection in the case that multiple PON ports are used for upstream
transmission, you need to remove all the optical cables of the ONU PON ports. This is because the
continuous mode of the ONU needs to be enabled when you measure the ONU transmit power. If the ONU
is connected to a splitter or OLT, the other ONUs that are connected to the same PON port fail to go online.
Step 3
Connect the optical power meter directly to the optical module on the ONU PON port using an
optical jumper, as shown in
Figure 1-47
Measuring the transmit optical power of an ONU PON port
Step 4
Wait 10s and then read the value. Check the value on the optical power meter in one minute.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
1 Commissioning
Issue 01 (2014-04-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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