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ePico3801
User Guide
Procedure
Step 1 Log in to the APM. Choose Configuration > Single Configuration and select an ePico3801 to
be maintained. Then, click Configure to enter the configuration window.
Step 2 Choose Terminal Parameter > OM > Maintenance in the navigation tree to set clock
synchronization parameters of the ePico3801.
1.
2.
Step 3 Choose Terminal Parameter > TRANSFER > Configuration > MD5PARA in the navigation
tree to configure the MD5 username and password. This command is used when the
ePico3801 uses the MD5 authentication.
Step 4 After the parameter setting is complete, click Apply. A system message is displayed, indicating
whether the parameter setting is successful.
----End
5.5.2 Modifying Transmission Parameters
This chapter describes how to modify transmission parameters. Generally, the transmission
parameters need not be modified after being set. Modifying transmission parameters may affect
the network connection. In addition, some transmission parameters being modified can take
effect only after the ePico3801 is restarted.
Prerequisite
l
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Procedure
Step 1 Log in to the APM. Choose Configuration > Single Configuration and select an ePico3801 to
be maintained. Then, click Configure to enter the configuration window.
Step 2 Choose Terminal Parameter > TRANSFER > Configuration in the navigation tree to set
transmission parameters.
Issue 01 (2009–09–23)
Fast pull-in: After the board starts the clock synchronization and detects that the clock
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packet is normal, the related algorithm calculates the required DA value based on the
clock packet. During the calculation period, the clock is in fast pull-in state.
Locked: The ePico3801 adjusts the system clock according to the calculated DA value.
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If the output clock is within the required precision range, the clock is locked. After that,
the ePico3801 continues to receive clock packets for a certain period to adjust the DA
value when the clock stays locked.
Hold: After the clock synchronization is successful and the clock enters locked state,
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the ePico3801 receives clock packets for a certain period to adjust the DA value. If the
clock source is lost or becomes abnormal during this period, the clock enters hold state.
If the clock is being synchronized, another clock synchronization cannot be started.
Choose SET_IPCLKPARAM to set IP clock parameters.
Choose SET_IPCLKTEST to perform the IP clock delay and jitter test.
NOTE
For details about how to set the parameters, see Help in the corresponding command configuration window.
The parameters of the ePico zone have been set successfully.
You have logged in to the AP Manager (APM). The login account belongs to the
Administrator or Operators group.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5 Reconfiguring the ePico3801
5-11
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