ADC H2TU-C-231 - Manual (Page 64)

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 Table 21 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