Unit installation

Installation and Operation Manual Chapter 3 Operation
FCD-E1 Controls and Indicators 3-5
Additional Function of Enter
When the alarm buffer is displayed, the ENTER push button can be used to erase the
currently displayed alarm message, and to reset the OOS, BPV, or CRC error counters.
If you make an incorrect selection, the selection is not accepted. In this case, you
see a CONFIG ERROR message with a two-digit code in the second display row.
The code indicates what is wrong. Configuration Error Messages on page 6-3
explains the codes and what to do to correct the error.
After a short time, the error message disappears and you see again the original
display. Now you can correct the error.
Normal Indications
LCD
The normal message displayed in the top row is ALARM BUFFER. If no alarm is
stored in the alarm buffer, FCD-E1 continues to display the last user-selected display.
In addition, FCD-E1 automatically aborts the current activity and redisplays the
ALARM BUFFER message if no front-panel button is pressed for one minute and
the alarm buffer is not empty. This ensures that it will not remain in an
indeterminate state even if the operator does not complete a configuration activity.
When the top row shows ALARM BUFFER, the second row displays the following
information:
• During normal operation, the second row should show EMPTY (no alarm
messages).
• If the alarm buffer contains alarms, you will see SCROLL in the left-hand field
of the second row, and CLEAR in the right-hand field.
LEDs
During normal operation, the ALM, SYNC LOSS, and TST indicators must be off.
Fault Indications
Any alarm condition causes the ALM indicator to light. Use the supervision
terminal to read the alarm messages.
If any of the main link alarm indicators or the TST indicator lights, data transfer is
interrupted.
If any of the sublink alarm indicator lights, data transfer is interrupted only for the
sublink.
• The TST indicator lights when a test is activated. If the test is activated from the
local FCD-E1A, see the test type using the supervision terminal. You can
disconnect a local loop as explained in Chapter 4 or Appendix D.
• A LOC indicator lights when a local loss of synchronization condition is present
on the corresponding link.
• A REM indicator lights when a remote loss of synchronization condition is
present on the corresponding link.