363-206-295
Circuit Pack Descriptions
7-2 Issue 1 December 1997
Compatibility 7
The BBG8/BBG8B SYSCTL, BBF2B TGS, BBF4 TG3, 21D/21D-U OLIU, and
21G/21G-U/21G2-U OLIU circuit packs are common to both the DDM-2000 OC-3
and OC-12 Multiplexers.
Universal Optical Connector 7
Circuit packs having a "-U" after their designation indicate that these circuit packs
have a universal optical connector.
The following circuit packs are available with the connector:
■ 21D-U OLIU
■ 21G-U/21G2-U OLIU
■ 23G-U OLIU
■ 23H-U OLIU.
This connector (Figure 7-1) is a two-part connector consisting of a faceplate-
mounted block and an optical buildout. The faceplate block optionally supports an
ST
®
, SC, or FC-type optical buildout.
A 0 dB
ST
-type connector is shipped as standard. Optional SC, or FC 0 dB, or
attenuated buildouts can be ordered separately. See Section 10, "Technical
Specifications," for a list of universal buildout attenuators.
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