ADC EDU-409 - Manual (Page 8)

Overview 150-409-115-05, Issue 5
2 January 26, 2000 EDU-409 List 1
A
PPLICATIONS
HiGain doublers operate with any number of T1, Plain Old Telephone
Service (POTS), Digital Data Service (DDS), or other HiGain systems
sharing the same cable binder group.
The EDU-409 List 1 has a range of up to 35 dB loss at 260 kHz on each of
the four HDSL loops. A list of HDSL signal cable losses for various cable
gauges at 260 kHz and 135
Ω
is provided in Table 1 . The table is applicable
to HDSL cable pairs running between the ELU and the EDU-409 List 1 and
between the EDU-409 List 1 and another EDU or ERU.
The EDU-409 List 1 can be used in two-span to four-span circuits, depending
on the models of the ELU and ERU being used with the doubler units and the
power option chosen for the ERU. The number of doublers is equal to one less
than the number of Spans (as shown in
Figure 3 on page 10 ).
Table 1. HDSL Signal Cable Loss
Cable Gauge
Loss @ 260 kHz
(dB/km) (a)
Ω
per km
0.4 mm/26 AWG 13.94 272
0.51 mm/24 AWG 10.47 171
0.61 mm/22 AWG 8.14 105
0.91 mm/19 AWG 5.74 52
(a) Add 3 dB for each bridged tap and 1 dB for each cable gauge change.