User's Manual

Table Of Contents
82 Commissioning
Chapter 3 - Commissioning
Table 3-4: NPU LEDs
Name Description Functionality
PWR Power indication
Off - NPU is not powered
Red - NPU power failure
Green - NPU power is ok
ALRM NPU Alarm indication
Off - NPU is OK
Red - NPU failure
BST ALRM Base Station chassis alarm
indication
Off - All Base Station modules are OK
Red - Failure in one (or more) Base Station
modules
EXT ALRM External alarm indication
Off - No alarm received via the AL IN connector
Red - Alarm received via the AL IN connector
MASTER Master/Slave
(primary/secondary)
operation indication
Off - Secondary NPU (backup)
Green - Primary NPU
GPS/SYNC GPS/IF clock synchronization
functionality indication
Off - GPS/IF clock synchronization is disabled
Green - GPS/IF clock synchronization is enabled
HOT SWAP NPU readiness for hot-swap
removal
Off: Power to the module is not disconnected, the
NPU is not ready for removal
Blue: Power to the module can be disconnected
and the NPU can be safely removed
For instructions on using the HOT SWAP handles refer
to
Section 2.2.9.