Events; Indication - NEC PASOLINK+ Manual

MTD-PL-028/141005
7) Mechanical Dimension
ODU
IDU 1 + 0
1 + 1
Note*: Including option panel
Note : Salt damage
In case of operating in the sea or around the coast area (within 3 km from coastline),
measure must be taken for the ODU against salt damage. Please ask NEC for
countermeasure.
6.5

Events

Alarm Events for 1+0 system
Event
LOS Input signal lost (Input STM-1 signal)
LOF Frame synchronization lost (Input STM-1 signal)
INTFC ALM STM-1 interface unit failure, Loss of output STM-1 signal
BER (RX) ALM Excessive BER
BER degraded worse than preset value (10e-3 to 10e-
5)
MOD ALM TX side alarm includes unit failure, IF output signal
degraded.
DEM ALM RX side alarm includes unit failure, IF signal input lost.
WS ALM Unit fail, WS input signal lost.
TX PWR ALM ODU transmitting power decreased
TX IN ALM Receiving TX IF signal level decreased
RX IN ALM Receiving signal level decreased
APC ALM ODU APC loop is out of lock
MAINT ALM LCT set to MAINT status
6.6

Indication

LED Indication on the equipment front
Failure indication of the equipment unit to be replaced.
1+0 Equipment
LED indication
MAINT
ODU ALM
IDU ALM
PWR
: 240(W) x 243(H) x 124(D) : Approx. 5 Kg (Type 1)
: 260(W) x 410(H) x 190(D) : Approx. 10 Kg (Type 2)
: 482(W) x 44(H) x 292(D) : Approx. 5 Kg*
: 482(W) x 133(H) x 300(D) : Approx. 13 Kg*
Event conditions
Condition
During Maintenance
ODU equipment failure
IDU equipment failure
On power
- 25 -
+
PASOLINK 155 MB 1+0/1+1 SYSTEM
ALM indication
LED
LED on Module panel
IDU ALM and LED on Module
panel
IDU ALM and LED on Module
panel
IDU ALM
IDU ALM
IDU ALM
IDU ALM
ODU ALM
ODU ALM
ODU ALM
ODU ALM
MAINT
Color
Yellow
Red
Red
Green