Backplane Wiring; Figure 2. Deployment From A Litespan Channel Bank - ADTRAN H2TU-C Installation And Maintenance Practice

Litespan 2000 or 2012 System with Litespan H2TU-C deployment
Common
Control
Channel Bank
Assembly with
a Litespan
H2TU-C
Installed
Typical Starspan System
Common
Control
High-Density
Fiber Bank

Figure 2. Deployment from a Litespan Channel Bank

The Litespan H2TU-C uses negative ground-referenced span powering voltage (–190 VDC) on
the HDSL2 loop. H2TU-R span powering can be disabled to allow locally powered H2TU-R
applications, if desired.

Backplane Wiring

The Litespan H2TU-C plugs directly into a Litespan channel bank assembly channel unit slot.
Litespan system software must be version 11.0.0, or later. The tip and ring connections from
the H2TU-C to the shelf are made through the following card edge pins:
• 1221002L1 H2TU-C Line Card Using Narrowband/Wideband Pairs
– Narrowband Tip - Pin A3
– Narrowband Ring - Pin A4
– Wideband Tip - Pin C7
– Wideband Ring - Pin C8
• 1221002L2 H2TU-C Line Card Using Narrowband Pairs
– Narrowband Tip - Pin A3
– Narrowband Ring - Pin A4
• 1221002L3 H2TU-C Line Card Using Wideband Pairs
– Wideband Tip - Pin C7
– Wideband Ring - Pin C8
61221002L1-5F
HDSL2 Loop Pair
HDT
OLNK
Litespan H2TU-C
HDSL2 Unit
Remote End
HDSL2 Loop Pair
ONU-96 with
an installed
Applications
HDSL2 Unit
Remote End
7