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FAQ-how to Configure External Clock Output Mode to 2MHz (instead of 2Mbs) in RTN910 and RTN950.

Publication Date:  2012-07-25 Views:  141 Downloads:  0

Issue Description

When you try to change "External Clock Source" in: NE Explorer--Configuration---Clock---Physical clock---Phase-Locked Source Output by Externar Clock, from 2Mbit/s to 2 Mhz you received a error message telling: "Path is already occupied, error code: 39747", and is not possible to change.

Alarm Information

Error message: "Path is already occupied, error code: 39747", and is not possible to change":

Handling Process

First go to: Configuration---Communication---DCC Management and Disable "External Clock Source 1":

Then you will able to change External clock source to 2Mhz. 

Note:  If "External Clock Source" does not exist in DCC menu first is necessary to create it (and then set in disable):

Root Cause

By default, external clock source is configured in 2Mbit/s so for change it, first is necessary to disable the "External Clock Source 1" in order to not use management bits D1, D2 and D3  and system allows to change to 2 Mhz.