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FAQ-How to Transfer Clocks Between the OptiX Metro 1000 V3 Equipment and the OptiX Metro 1000 V2 Equipment Through Clock Cables

Publication Date:  2012-07-25 Views:  58 Downloads:  0
Issue Description

Q:

A customer installs several sets of OptiX Metro 1000 V3 and OptiX Metro 1000 V2 equipment in the same telecommunications room. The customer wants to trace clocks between different equipment that has different platforms and is not connected through fibers to ensure that the unique clock source is traced for all the services in the entire network. 

 

Alarm Information
Null
Handling Process
A:
1. The OptiX Metro 1000 V3 equipment uses the 5.0 platform and its clock interface type is ETH. Therefore, only 120 ohm impedance can be used. The OptiX Metro 1000 V2 equipment, however, uses the 4.0 platform and its clock interface type is SMB. Therefore, only 75 ohm impedance can be used.
2. Huawei can provide cables whose type is 04044726 to synchronize the clocks between the OptiX Metro 1000 V3 equipment and the OptiX Metro 1000 V2 equipment.
3. The cables for converting 75-ohm clocks into 120-ohm clocks are as follows:
43SCB:
a. 1,04042312 Single Cable, Clock Conversion Cable,30m,SMB75SF-IV,120CC1P0.5(S)+SYV75-2/0.34(S))
b. 04042313 Single Cable,2 Channel Clock Conversion Cable,30m,2*SMB75SF-IV,2*120CC2P0.5(S)+2*SYV75-2/0.34(S))
46SCB:
04044726 Single Cable,120ohm To 75ohm Clock Cable,30m,MP8-II,120CC4P0.4P430U(S)+4*SYV75-2/0.34(S))
In addition, the transfer box can be also provided.
04026814 Single Cable,120ohm,75ohm Converter Box(With SMB Socket 14040127),PCB03022834+Box Body 21210634) 

 
Root Cause
The possible causes are as follows:
1  The OptiX Metro 1000 V3 equipment has a different platform from the OptiX Metro 1000 V2 equipment. In addition, the clock configuration is also different.
2  The OptiX Metro 1000 V3 equipment has a different clock interface and impedance from the OptiX Metro 1000 V2 equipment. 

 
Suggestions
1 The equipment clock must be unified in the entire transmission network.
2 Know the specific models of 75-to-120 ohm clock conversion cables.
3 Apply for dedicated cables (04044726) from Huawei to trace the clocks between the OptiX Metro 1000 V3 equipment and the OptiX Metro 1000 V2 equipment. 

 

END