Generic Information LTPH-UM-1234-01
18 April 30, 2003 HDU-409 Lists 1, 2, and 3
MIXING HIGAIN DOUBLERS
The HiGain HDU-439 mini doubler can also be installed along with the
HDU-409 micro doubler in the same enclosure. Assign a thermal weight of
1.5 HDU-409 for every HDU-439 and round down to the nearest whole
number. This results in one of the following thermal relationships:
a) 1.5 (HDU-409) = 1 (HDU-439)
b) 1 (HDU-409) = 2/3 (HDU-439)
For example, if an AT&T 819 case has only 10 HDU-409 doublers leaving
room for four more HDU-409 doublers, the number of HDU-439 doublers
that can be allotted to these 4 slots is determined by using (b) as follows:
4 (HDU-409) = (4) (2/3) (HDU-439)
4 (HDU-409) = 2.66 (HDU-439) = 2 (HDU-439)
Similarly the number of HDU-439 doublers that can be allotted to 6 empty
HDU-409 slots is:
6 (HDU-409) = (6) (2/3) (HDU-439) = 3 (HDU-439)
MICRO DOUBLER CAPACITY DEPLOYMENT
R
ULES
The deployment rules for micro doubler capacity are summarized below:
1 Use Table 4 on page 11 for indoor enclosures.
2 Use Table 5 and Table 6 on page 15 for outdoor enclosures with full
solar load for ambient temperatures up to 115°F maximum.
3 The capacities shown in Table 5 can be increased to all odd or even slots
(where applicable) for non-solar load (shaded or manhole applications).
The non-adjacency constraint still applies for these increased capacity
applications. The capacity of the ABACON HDSL 16 enclosure can be
increased to 16 for non-solar load applications.
When assigning slot locations, make sure there is an empty
slot between any two adjacent doublers (HDU-409 and
HDU-439).
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