Unit installation

Chapter 6 Troubleshooting and Diagnostics Installation and Operation Manual
6-4 Detecting Errors FCD-E1
Table 6-1. Performance Monitoring Parameters (Cont.)
FCD-E1 also provides local statistics support. These are long-term statistics
gathered over the long-term interval (96 intervals of 15 minutes each, i.e., a total
of 24 hours) for each link interface. The additional parameters included in this
class are:
Display Name Description
L.TERM ES*
Long-term errored seconds The total number of ES in the current 24-hour interval.
L.TERM UAS* Long-term fail seconds The total number of UAS in the current 24-hour interval.
L.TERM SES* Long-term severely errored seconds The total number of SES in the current 24-hour interval.
L.TERM BES* Long-term bursty errored seconds The total number of BES in the current 24-hour interval.
L.TRM LOFC* Long-term loss of frame counter The total number of LOF events in the current 24-hour
interval.
L.TERM CSS* Long-term slip second counter The total number of CSS in the current 24-hour interval.
L.TERM INT* Long-term interval The number of valid 15-minute intervals in the previous
24 hour period.
CUR DEG MIN* Current degraded minutes The total number of degraded minutes in the current
24-hour interval. A degraded minute is a minute in
which the bit error rate (BER) exceeded 1×10
-6
. This
number is updated every minute.
LST DEG MIN* Last degraded minutes The total number of degraded minutes in the last
24-hour interval. This number is updated every
24 hours.
BPV COUNT Bipolar violations (BPV) count The total number of bipolar violations counted in the
last minute. This number is updated every minute.
BPV WORST Bipolar violations worst count The number of bipolar violations counted in the worst
minute since the last resetting of the BPV count. This
number is updated every minute.
* Indicates performance monitoring with the CRC-4 option enabled.
6.2 Detecting Errors
This section explains how to detect and fix errors and other problematic conditions
in FCD-E1. Included in this section is information on:
• Power-Up Self-Test
• Configuration Error Messages
Power-Up Self-Test
Upon power-up, FCD-E1 automatically performs a self-test, to test critical circuit
functions, and then decompresses and loads the operational software. During
software decompression, the TST front-panel indicator flashes slowly, and then
turns off.
• If a problem is detected during self-test, FCD-E1 automatically sends reports to
the supervision terminal and the front panel LCD.