FieldSmart
®
Fiber Active Cabinet (FAC) 400
Installation Manual
_________________________________________________________
Proprietary Information: Not for use or disclosure except by written agreement with Clearfield.
100
Installing a Protection Block
Prepare the expansion protection block(s) for installation as follows:
a.
Unpack the protection block from the shipping packaging.
b.
On the back of the protection block, remove any cable ties that coil up the interface cables (two with
MS2or 710) connectors, two with RJ-21 connectors).
c.
Open the cabinet’s front and side doors.
d.
Locate the open position(s) on the mounting fixture, and then feed the protection block’s interface cables
through the fixture into the area behind it.
Note:
On the mounting fixture, the (2) upper positions hold blocks for the first active service unit, the (2) lower
positions hold blocks for the second active service unit, and if present, the bottom/expansion frame hold blocks
for a third active service unit.
Attach the protection block to the mounting fixture as follows:
a.
Insert the tabs on the bottom of the protection block into the slots on the frame.
b.
Pull down the spring-loaded plunger latch at the top of the protection block. While holding the plunger down,
rotate the block back into its mounting position. Release the plunger latch to secure it in to the
mounting fixture.
c.
Install two supplied screws into the base of the block to secure it to the frame.
Note:
The screws provide a critical ground path to the cabinet’s main ground bar.
Step 1:
Step 2:
You can increase the cabinet’s copper line protection capacity in the field to support expansion equipment. The protection
blocks reside in a mounting fixture that holds up to four blocks, or up to six blocks if the cabinet is configured with the
expansion frame.
Note:
All Clearfield protection blocks use dead pair wiring, with a dead pair at the 25th position on both the equipment side
(RJ-21) and subscriber side (MS2 or 710) interface cables. On the protection blocks, line identification labels cover the dead
pair positions (25 and 50).
To install a protection block
