The GPS or RGPS clock is recommended for macro eNodeBs. The 1PPS+TOD clock is not preferred. The 1PPS+TOD clock can be used in scenarios where GPS
antenna installation is difficult. Micro eNodeBs cannot be synchronized with 1PPS+TOD clock. To synchronize with the 1PPS+TOD clock, eNodeBs must be configured with the USCUb, UMPT, or UMDU.
To configure the 1PPS+TOD use the following commands:
- Run the SET CLKSYNCMODE command to set the clock synchronization mode.
- Run the SET CLKMODE command to set the clock working mode.
- Run the ADD TOD command to add a 1PPS+TOD clock link.
An example of how to configure it:
SET CLKSYNCMODE: CLKSYNCMODE=TIME;
//To set the clock working mode to AUTO(Auto), run the following command:
SET CLKMODE: MODE=AUTO;
//To add a 1PPS+TOD clock link, run the following command:
ADD TOD: TYPE=IN, SN=7;
//To query the status of the clock source, run the following command:
DSP CLKSTAT: SN=7;
The following table describes the key parameters that must be set in the TASM MO to configure the clock working mode and synchronization mode. The key parameters in this MO are described in the following table.
