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61221002L2-5B 9
Loop loss per kft for other wire is summarized in
Table 11.
Cable Gauge
26
26
24
24
22
22
19
19
Cable Type
PIC
Pulp
PIC
Pulp
PIC
Pulp
PIC
Pulp
Temperature (
°
F)
68
°
90
°
120
°
3.902 4.051 4.253
4.030 4.179 4.381
2.863 2.957 3.083
3.159 3.257 3.391
2.198 2.255 2.333
2.483 2.450 2.629
1.551 1.587 1.634
1.817 1.856 1.909
Table 11. HDSL2 Loss Values
)zH(ycneuqerF)Bd(ssoLmumixaM
000,3
000,01
000,05
000,001
000,051
000,691
000,002
000,052
000,523
0.21
0.51
5.52
0.03
57.23
0.53
52.53
05.73
00.24
Table 12. Loop Insertion Loss Data
Table 12 provides the recommended maximum local
loop loss information for PIC cable at 70ºF, 135 ohms,
resistive termination.
An approximation for the maximum amount of
wideband noise on an HDSL2 local loop as measured
by a 50 kb filter is
< 31 dBrn.
An approximation for the maximum level of impulse
noise as measured using a 50 kb filter on an HDSL2
loop is
< 50 dBrn.
NOTE
These approximations are to be used as guidelines
only and may vary slightly on different loops.
Adhering to the guidelines should produce
performance in excess of 10
-7
BER.
For further information regarding deployment
guidelines, and applications, reference ADTRAN’s
Supplemental Deployment Information for HDSLx,
document P/N 61221HDSLL1-10.
5. MAINTENANCE
The ADTRAN Litespan H2TU-C requires no routine
maintenance. ADTRAN does not recommend that
repairs be performed in the field. Repair services may
be obtained by returning the defective unit to the
ADTRAN Customer and Product Service (CAPS)
department.