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Table 6. Capacities with Full Solar Load, LD-1 Repeaters Vendor Description Model No. HDU-409 Doubler Capacity LD-1 Repeater Capacity Recommended Slot Assignment for maximum Capacity NORTEL LD1 Outdoor canister, pole/wall mount QCD14 (A & B) 4 6 2 per row, non-adjacent, staggered (non-overlapping) QCD15 (A & B) QCD10 A 6 12 QCD7 A 10 25 QCD16 (A & B) QCD8 (A & B) QCD9 (A & B) QCD17 (A & B) 20 50 Thermal constraints must be observed to ensure reliable service for worst-case conditions. HDU-409 Lists 1, 2, and 3 April 30, 2003 Generic Information LTPH-UM-1234-01 ALTERNATIVE DOUBLER ENCLOSURE CAPACITIES Reduce the doubler capacity by one for every two doublers that do not have an empty slot between them. If the application allows seven doublers, but two are directly adjacent to each other, then the total capacity must be reduced to six. Standard T1 or LD1 repeaters can be installed in the same enclosure with doubler units. If this method is used, the maximum number of doublers that can occupy the same case with the standard repeaters must be reduced by one for every four T1 or LD1 repeaters (or fractions thereof) installed. Rule one on page 11, in the section titled, “Doubler Enclosure Capacities with Full Solar Load” on page 9, does not apply if the adjacent slot is occupied by a T1 or LD1 repeater; however, slots adjacent to doublers should be left vacant if possible. April 30, 2003 HDU-409 Lists 1, 2, and 3 LTPH-UM-1234-01 Generic Information The AT&T 819 enclosure has two, individual isolated chambers as shown in Figure 4. Slots 1 through 14 are in one chamber. The other chamber contains slots 15 through 25, along with the Pressure (PRES), Filter (FIL), Capacitor (CAP), and COIL slots. . Top Chamber 1 8 D5 9 10 D6 11 12 D7 1 D1 2 4 5 D3 3 D2 6 7 D4 13 14 D8 20 21 D12 22 23 D13 24 25 D14 C A P C O I L 15 D9 16 17 D10 18 19 D11 P R E S F I L Chamber 2 Bottom H0080-A Figure 4. AT&T 819 Enclosure, Slot Locations 1 through 14 The AT&T 819 can house up to 14 HDU-409 doublers in the slots designated as D1 through D14 as shown in Figure 4. Because the length of the HDU-409 extends beyond the depth that older AT&T 819 T1 repeater apparatus covers can accommodate, the cover must be replaced by a deeper cover. HDU-409 Lists 1, 2, and 3 April 30, 2003 Generic Information LTPH-UM-1234-01 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) When assigning slot locations, make sure there is an empty slot between any two adjacent doublers (HDU-409 and HDU-439). MICRO DOUBLER CAPACITY DEPLOYMENT RULES 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. April 30, 2003 HDU-409 Lists 1, 2, and 3 LTPH-UM-1234-01 Generic Information 4 For non-solar applications in an environment up to 95°F maximum, the capacity for an SPC, 32-slot 7030-32P enclosure can be increased to all 32 slots. 5 Decrease capacities in Table 5 and Table 6 on page 15 by five percent (round up to the nearest whole number) for every 5°F (2.8°C) increase, or fraction thereof, in ambient temperatures above 115°F (46°C). Always assign the empty slots to the highest (uppermost) positions. 6 Increase the capacities by five percent (round down to the nearest whole number) for every full +5°F (2.8°C) reduction in ambient temperature, below 115°F (46°C). The non-adjancency constraint still applies for these increased capacity applications. 7 Decrease any outdoor capacity by one for every four T1 or LD1 repeaters, or fraction thereof, that are installed with the doublers. 8 For all outdoor applications, decrease the capacity by one for every two adjacent doublers that are not separated by at least one empty slot. HDU-409 Lists 1, 2, and 3 April 30, 2003 Installation LTPH-UM-1234-01 INSTALLATION To install the HDU-409 in an enc...

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