Nera WILINK I System Manual page 55

2.2.9 Using the Hot Swap Injector/Ejector Handles
The Base Station modules include special handles for high-force
insertion/extraction of modules. Each of the 6U high modules (NPU, AU-IDU)
includes two such handles, whereas each of the 3U high-modules (PIU, PSU)
includes a single handle at the bottom of the front panel.
The bottom injector/ejector handle of the NPU and AU-IDU modules includes a
micro-switch to support hot-swap control. Second generation PIU modules also
support hot-swap, as indicated by the HOT SWAP blue LED.
2.2.9.1 Inserting Modules
To insert a module with hot-swap support (NPU, AU-IDU, PIU):
1 Firmly push in the module into its intended slot (slot 5 for the NPU, slot 1-4,
7-9 for AU-IDU).
2 Press the handles up (the upper handle if available)/down (the lower handle)
simultaneously until you hear the locking click and the red buttons are
released. The blue HOT SWAP LED will briefly turn on (only in AU and NPU),
indicating that the module is being powered up.
CAUTION
In a PIU with HOT SWAP LED, connect power to the PIU only after it is fully inserted into the
chassis.
3 Secure the module in place by closing the screws at the top and bottom of the
front panel.
NOTE
If a module is fully inserted without properly locking the handles, it will become operational.
However, in this state the hot-swap mechanism is not supported. A warning message (trap) will be
sent.
To insert a PSU or a PIU without HOT SWAP support:
CAUTION
In a PIU without HOT SWAP LED, disconnect power from the PIU module before inserting it to the
chassis.
1 Firmly push in the module into its intended slot.
2 Press the handle down until you hear the locking click and the red button is
released.
3 Secure the module in place by closing the screw at the top of the front panel.
WILINK I MODULAR BASE STATION SYSTEM MANUAL
Installing the Base Station Equipment
43