Table 3. Hdsl Loss Values; Table 4. Loop Insertion Loss Data - ADTRAN HDSL DDM+ HTU-C Installation And Maintenance Practice

HDSL DDM+ Transceiver Unit for Central Office Installation and Maintenance Practice
Cable Gauge
Recommended maximum local loop loss information for PIC cable at 70°F, 135 Ω resistive
termination is provided in
An approximation for the maximum amount of wideband noise on an HDSL 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 HDSL loop is ≤ 50 dBrn.
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
6

Table 3. HDSL Loss Values

(200 kHz cable loss in dB/kft at 135 Ω )
Cable Type
26 PIC
26 Pulp
24 PIC
24 Pulp
22 PIC
22 Pulp
19 PIC
19 Pulp
Table 4.

Table 4. Loop Insertion Loss Data

Frequency (Hz)
3000
10000
50000
100000
150000
196000
200000
250000
325000
Temperature
68° 90°
3.902 4.051
4.030 4.179
2.863 2.957
3.159 3.257
2.198 2.255
2.483 2.45
1.551 1.587
1.817 1.856
Maximum Loss (dB)
12.00
15.00
25.50
30.00
32.75
35.00
32.25
37.50
42.00
NOTE
-7 BER.
120°
4.253
4.381
3.083
3.391
2.333
2.629
1.634
1.909
61247003L6-5A