Err/Alm Hist Menu; Figure 4-4. Clear History Screen; Table 4-2. Alarms And Errors (Current And Historical) - ADTRAN 1203060L1 User Manual

TSU LT User Manual

ERR/ALM HIST MENU

Use this branch for viewing a history of errors and alarms. If an alarm has occurred since the last
selection, the menu condition is active; otherwise it is inactive (see Figure 4-4). Table 4-2
H
ISTORY
provides a complete list of the errors and alarms.
Errors and Alarms
Loss of Signal No pulses received at NI
AIS Alarm Unframed All-Ones received at NI
Out of Frame No framing pattern sync at NI
Yellow Alarm Receiving yellow alarm pattern from NI
Red Alarm Loss of signal/out of frame (LOS/OOF) causing red alarm at NI
Code Violations Cyclic redundancy check (CRC) errors in ESF, or bipolar violations (BPVs) in Superframe
Format (SF) were received at NI
Bipolar Violations BPVs (the presence of two consecutive bits of the same polarity) in SF or ESF
Frame Bit Errors Frame Bits received incorrectly at NI
PLL Alarm Unable to sync up to selected clock
61203060L1-1A

Figure 4-4. Clear History Screen

Table 4-2. Alarms and Errors (Current and Historical)

© 2003 ADTRAN, Inc.
Meaning
Chapter 4 Status Menu
C
LEAR
37