Figure 54. Resistance Budget, Span Powering Two Repeaters (Example) - ADTRAN HDSL4 Installation And Maintenance Manual

HDSL4 for General Distribution Installation and Maintenance Practice
An example problem is illustrated in
measurements:
• 600 ohm first segment resistance
• 700 ohm second segment resistance
• 900 ohm third segment resistance
Refer to the graph, follow these steps to solve the example problem:
1. Find the 900 ohm third segment resistance line on the graph. This line is depicted in bold
in Figure 54. This line is the upper span power limit.
2. Find the 600 ohm first segment resistance point on the vertical axis.
3. Find the 700 ohm second segment resistance point on the horizontal axis.
4. Find the instance on the graph where the points from
If this point is below the bold line defined in the
parameters is capable of span powering two H4Rs and one H4TU-R.

Figure 54. Resistance Budget, Span Powering Two Repeaters (Example)

61223HDSL4L2-5C
Figure
WITHIN LIMITS
54. For this example, begin with three known
step 2
step 1, then a circuit with these
OUTSIDE LIMITS
Third Segment Resistance
HDSL4 Deployment Guidelines
and step 3 meet.
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