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Chapter 3. Operation
3-12 TSU User Manual 61200060L1-1
CURR ERR/ALM Submenu of 1)Status
The Current Error/Alarm menu is used for viewing currently
Active/Inactive errors and alarms.
1. With the cursor on main menu item 1)S
TATUS
,press
ENTER
. The first of three Status submenu items with the
cursor on 1)NI PERF RPTS displays.
2. Press the down scroll key.
3. Press
ENTER
.
The results display the first current E
RRORS
/A
LARMS
screen.
The up and down scroll keys are used to access the complete
display of the errors/alarms that are currently active. The
alarms and errors which can be seen are shown below.
LOSS OF SIGNAL
ACTIVE
Alarm Investigated
State (Active/Inactive)
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 LOS/OOF causing red alarm at NI.
Code Violations CRC errors in ESF, or BPVs in SF were
received at NI.
Bipolar Violations BPVs in SF or ESF.
Frame Bit Errors Frame Bits received incorrectly at NI.
PLL Alarm Unable to sync up to selected clock
source.