Specifications

FCD-E1LC Ver. 1.0 Troubleshooting 6-11
6.4 Troubleshooting
Preliminary Checks
If the problem is detected the first time the FCD-E1LC is put into operation,
perform the following preliminary checks before proceeding:
• Check for proper installation and correct cable connections, in accordance
with the system installation plan.
• Check the configuration parameters in accordance with the specific
application requirements, as provided by the system administrator. In
particular, check for configuration error messages (see the
Configuration
Error Messages
section below).
• If the FCD-E1LC nodal clock is to be locked to the clock recovered from one of
the user ports, make sure a suitable fallback clock source is configured and
provides a good clock signal.
Configuration Error Messages
If FCD-E1LC detects a configuration mismatch, it displays an appropriate
configuration error message on the supervision terminal.
The configuration error messages have the format ERROR, followed by a numeric
code and a short error message after the error code.
Table 6-3 lists the
configuration error messages in ascending order of their codes and explains each
of them.
Table 6-3. FCD-E1LC Configuration Error Messages
Error Code Terminal Message and Description
ERROR 000 MASTER AND FALLBACK CLOCK ARE THE SAME
You are trying to select the same source as both master and fallback clock source. Check
and change as required.
ERROR 001 INVALID MASTER CLOCK SOURCE
The channel you are trying to select as the master clock source is either not connected,
or its clock mode is not DTE2.
Check and change as required.
ERROR 002 INVALID FALLBACK CLOCK SOURCE
The channel you are trying to select as the fallback clock source is either not connected,
or its clock mode is not DTE2
Check and change as required.
ERROR 003 ILLEGAL DCD DELAY AND INTERFACE COMBINATION
You are trying to select a non-zero DCD DELAY after the FCD-E1LC supervisory port
interface has been set as DCE.