Alpha Telecom UT3620 Triple NT1, Installation Manual

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Y-Bus Configuration:
This covers cases where more than 4 terminals
are required. An example is shown in
Figure 11 .
Solution: Wire two equally distant TR a
maximum of 140 meters from the NT1, within a
10 meter tolerance. Each TR can support up to 4
terminals, and terminals must be within 25
meters of a TR. No TE symmetry is required, so
one TR can have four terminals connected while
the second only has one.
From NT1 to TR is 140m
ON
OFF
Figure 11. Y-Bus Configuration
TR
TR
11 UT3620 Triple NT1 Installation Guide