ADC H2TU-C-231 Manuel D’Utilisation
Appendix A - Specifications
LTPH-UM-1109-01, Issue 1
56
January 9, 2002
H2TU-C-231 List 2
L
OOP
A
TTENUATION
, I
NSERTION
L
OSS
,
AND
R
EACH
Each loop has no more than 35 dB of loss at 196 kHz, with driving and terminating impedances of 135
Ω
, as shown
in
below. This is equivalent to no more than 28 dB loop attenuation.
Table 21.
HDSL2 Reach Chart
Cable Gauge
Insertion Loss
(a)
at
196 kHz (dB/kft)
(a) Insertion Loss = 1.25 times loop attenuation
Loop Attenuation
(dB/kft)
Maximum Reach
(kft)
Ω
per kft
26/0.4 mm
3.88
3.1
9
83
24/0.51 mm
2.84
2.2
12
52
22/0.61 mm
2.18
1.7
16
32
19/0.91 mm
1.54
1.2
23
16