ADTRAN HDSL2 - Manual (Page 62)

Maintenance HDSL2 for General Distribution Installation and Maintenance Practice
52 61223HDSL2L2-5B
Loop loss per kilofoot for standard wire gauges is summarized in Table 12 .
An approximation for the maximum amount of wideband noise as measured using an F filter
on an HDSL2 loop having 35 dB loss is < –47 dBrnF.
An approximation for the maximum level of impulse noise as measured using an F filter on an
HDSL2 loop having 35 dB loss is
≤ –38 dBrnF.
For additional information on these and other deployment issues, refer to Supplemental
Deployment Information for HDSL, HDSL2, and HDSL4 (HDSLx), document number
61221HDSLL1-10.
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.
MAINTENANCE
The HDSL2 products detailed in this document do not require routine maintenance. In case of
equipment malfunction, use the front panel bantam jack connectors to isolate the source of
the problem.
ADTRAN does not recommend that repairs be performed in the field. Repair services may be
obtained by returning the defective unit to ADTRAN. For more information, refer to
“Appendix
D, Warranty” .
Table 12. HDSL2 Loss Values
Cable Gauge Cable
Type
Temperature
68°F 90°F 120°F
26 PIC 3.902 4.051 4.253
26 Pulp 4.030 4.179 4.381
24 PIC 2.863 2.957 3.083
24 Pulp 3.159 3.257 3.391
22 PIC 2.198 2.255 2.333
22 Pulp 2.483 2.545 2.629
19 PIC 1.551 1.587 1.634
19 Pulp 1.817 1.856 1.909