4-12
Issue 9 October 1998
363-206-204
Powering, Verification, and Circuit Pack Installation
NOTE
:
Releases 6 and 8 configurations may require (depending on the configura-
tion) 21G optical line interface unit (OLIU) circuit packs in function unit posi-
tions and also in the Main OLIU positions. Releases 7, 9, 11 and 13 do not
use the 21G OLIU.
22F/22F-U/22F2-U (OLIU) Circuit Packs
The 22F OLIU circuit packs are required for ring configurations (Releases 7, 9, 11
and 13) and linear configurations if the add/drop function is being utilized
(Releases 6 and 8).
1. The 22F OLIU circuit pack has no customer set options.
2. Place, but do not fully install, the 22F OLIU circuit pack(s) into the shelf.
22G-U/22G2-U/22G3-U (OLIU) Circuit Packs
The 22G3-U circuit pack replaces all 22F and all previous 22G circuit packs. Care
should be taken if the circuit pack at the other end of the fiber is a 22F or a 22G-U
circuit pack because the latter two are not designed to accept the greater optical
power levels emitted by the 22G3-U (or by the 22G2-U).
The 22G-U and 22G3-U OLIU circuit packs have no customer switch set options.
3. The 22G-U OLIU circuit pack is shipped with a 0 dB
ST
®
universal LBO
installed. If an SC or FC/PC connector or different LBO is required; the uni-
versal LBO can be ordered separately. See Table 4-3
1. To remove the universal LBO.
2. Depress the locking tab on the buildout until it is free from the locked
position, rotate the buildout counterclockwise to the stop position,
and separate the buildout block by pulling it toward you. Refer to the
appropriate figure in Figure 4-16 for the specific buildout type.
3. To install the universal LBO.
Do not attach the LBO to the fiber jumper before installation
of the LBO on the OLIU. Installing the LBO with the fiber
jumper attached could damage the OLIU.
4. Remove the protector caps and plugs (if equipped) from buildout
and buildout block.
5. Align the lightguide buildout locking tab with slot in buildout block
(unlocked position), push in, and rotate clockwise until locked into
position. Refer to the appropriate figure in Figure 4-16 for the spe-
cific buildout type.
4. Place, but do not fully install, the 22G-U OLIU circuit pack(s) into the shelf.
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