Huawei MA5833 User manual

MA5833-DD60
Hardware Commissioning Guide
Issue 01
Date 2018-12-26
HUAWEI TECHNOLOGIES CO., LTD.

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Huawei Technologies Co., Ltd.
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Email: [email protected]
Issue 01 (2018-12-26) Copyright © Huawei Technologies Co., Ltd. i

Contents
1 Measuring the 60 V AC Output Voltage...................................................................................1
2 Checking Upstream Optical Port Optical Power.....................................................................3
3 Commissioning the Optical Power of the Optical Receiver................................................. 5
4 Commissioning the Output Optical Power of the Optical Transmitter............................. 7
5 Adjusting the Signal Level.......................................................................................................... 9
5.1 Adjusting the CATV Signal Level..................................................................................................................................9
5.2 Adjusting the Downstream DOCSIS Signal Level.......................................................................................................11
5.3 Adjusting the Upstream DOCSIS Signal Level........................................................................................................... 12
6 Checking Device Running.........................................................................................................15
MA5833-DD60
Hardware Commissioning Guide Contents
Issue 01 (2018-12-26) Copyright © Huawei Technologies Co., Ltd. ii

1 Measuring the 60 V AC Output Voltage
NOTE
lIf the MA5833 needs to transmit power to a lower-layer device, check the 60 V power pass-through
indicator to identify whether the 60 V output power supply is available. The indicator is on
when power is transmitted through a port.
lCheck the 12 V DC and 34 V DC power supply indicator .The indicator is on when the power
supply is within the specified range.
lAlternatively, test whether the voltage on the test point of the 12 V DC and 34 V DC power
supply meets requirements. To do so, adjust the multimeter for the DC voltage test, connect the
black probe of the multimeter to the metal place on the front panel, and connect the red probe to the
test point of the 12 V DC and 34 V DC power supply.
MA5833-DD60
Hardware Commissioning Guide 1 Measuring the 60 V AC Output Voltage
Issue 01 (2018-12-26) Copyright © Huawei Technologies Co., Ltd. 1

Voltage Test Points and Indicators on MA5833
MA5833-DD60
Hardware Commissioning Guide 1 Measuring the 60 V AC Output Voltage
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2 Checking Upstream Optical Port Optical
Power
lWhen measuring upstream optical port optical power, do not stand close to or look into the
optical port without eye protection.
lThe Rx optical power of the upstream optical port on the MA5833 must be within the Rx
optical power range. Otherwise, the optical module will be damaged (excessively high Rx
optical power) or cannot receive signals properly (excessively low Rx optical power).
lWhen the receive optical power is close to the critical value, the MA5833 can be
functional for a short period of time. To ensure that the MA5833 is functional for a long
period of time, adjust the receive optical power.
Step 1 Set the wavelength of an optical power meter to 1490 nm and use it to measure the output
power on optical fibers.
Step 2 If the test result exceeds the preceding range, use an optical attenuator on the OLT side to
decrease the input optical power of the MA5833.
Step 3 Measure and verify that the input optical power of the MA5833 is within the supported range.
MA5833-DD60
Hardware Commissioning Guide 2 Checking Upstream Optical Port Optical Power
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Upstream Mode Range of the Rx Optical Module
GPON -8 dBm to -27 dBm
10G GPON -8 dBm to -28 dBm
GE -3 dBm to -19.5 dBm
10GE -1 dBm to -11.1 dBm
lRanges of the Rx optical power of the upstream port may be different according to
optical modules of different types used in the same upstream direction. Specifications of
the actual optical module prevail.
lIf the test result exceeds the upper limit of the Rx optical power, optical attenuator can be
added on the ONU side to reduce the input optical power of the MA5833.
----End
MA5833-DD60
Hardware Commissioning Guide 2 Checking Upstream Optical Port Optical Power
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3 Commissioning the Optical Power of the
Optical Receiver
NOTE
The following introduces how to use a multimeter to measure the optical power. You can also use an
optical power meter to measure the optical power of the optical receiver.
Step 1 Adjust the multimeter for the DC voltage test. Connect the black probe of the multimeter to
the screw on the front panel and connect the red probe to the optical power test point of the
optical receiver to measure the DC voltage. Obtain the optical power from the following table
based on the measured voltage.
Figure 3-1
Step 2 The input optical power ranges from -8 dBm to 3 dBm.
lIf the input optical power is greater than 0 dBm, add a fixed optical attenuator to
decrease the receive optical power of the optical receiver.
lIf the input optical power is less than -6 dBm, check the output optical power of the
optical transmitter and whether the physical connection between the optical transmitter
and optical receiver is functional.
MA5833-DD60
Hardware Commissioning Guide
3 Commissioning the Optical Power of the Optical
Receiver
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Table 3-1
Input Optical Power
(dBm)
V DC (or mW) Recommended or Not
(Yes/No)
3 2 No
2 1.58 No
1 1.26 No
0 1 Yes
-1 0.79 Yes
-2 0.63 Yes
-3 0.5 Yes
-4 0.4 Yes
-5 0.32 Yes
-6 0.25 Yes
-7 0.2 No
-8 0.16 No
----End
MA5833-DD60
Hardware Commissioning Guide
3 Commissioning the Optical Power of the Optical
Receiver
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4 Commissioning the Output Optical Power
of the Optical Transmitter
NOTE
The following introduces how to use a multimeter to measure the optical power. You can also use an
optical power meter to measure the optical power.
Step 1 Adjust the multimeter for the DC voltage test. Connect the black probe of the multimeter to
the screw on the front panel and connect the red probe to the optical power test point of the
optical transmitter to measure the DC voltage. Obtain the optical power from the following
table based on the measured voltage.
Step 2 The output optical power ranges from 2 dBm to 4 dBm. If the input optical power is out of
this range, replace the optical transmitter.
Output Optical Power (dBm) V DC (or mW)
4 2.51
3 2
MA5833-DD60
Hardware Commissioning Guide
4 Commissioning the Output Optical Power of the Optical
Transmitter
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