clock sa-bit (system view)

Function

The clock sa-bit command configures a timeslot of 2 Mbps signals of a BITS clock source from which the device extracts SSM levels of clock signals.

By default, the device extracts SSM levels of clock signals from the sa4 timeslot of 2 Mbps signals of a BITS clock source.

Format

clock sa-bit { sa4 | sa5 | sa6 | sa7 | sa8 } source bits0

Parameters

Parameter	Description	Value
sa4	sa4 timeslot.	-
sa5	sa5 timeslot.	-
sa6	sa6 timeslot.	-
sa7	sa7 timeslot.	-
sa8	sa8 timeslot.	-
source	Specifies the clock reference source.	-
bits0	Indicates that the external BITS clock source is a BITS0 interface.	-

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
clksync	write

Usage Guidelines

Usage Scenario

If the signal type of an external clock source connected to the NetEngine 8000 F's BITS interface is 2 Mbps, the external clock signal has carried SSM levels in an Sa timeslot. To enable the NetEngine 8000 F to automatically extract SSM levels from clock signals, configure the Sa timeslot from which the NetEngine 8000 F extracts SSM levels to be the same as the Sa timeslot of the external clock signal. If the two Sa timeslots are different, the NetEngine 8000 F cannot extract SSM levels of clock signals received on the BITS interface. In this situation, the SSM levels of the clock signals are unk.

NOTE:

SR does not support this command.

In VS mode, this command is supported only by the admin VS.

Example

# Set the timeslot from which the BITS0 interface extracts SSM levels of clock signals to sa5.

<HUAWEI> system-view
[~HUAWEI] clock sa-bit sa5 source bits0