Deployment Guidelines; Table 8. Cable Type And Temperature Loss Data @ 13.3 Khz; Table 9. Total Reach Dds Insertion Loss Measurements - ADTRAN Total Access 1500 Total Reach DDS-DP Installation And Maintenance Manual

Deployment Guidelines

The Total Reach DDS‐DP and DDS‐R use technology intended to eliminate the need for
repeaters and concerns over impairments caused by typical noise and bridged tap. Table 8
describes cable loss for the Total Reach DDS Nyquist frequency of 13.3 kHz, while Table 9
measures the DDS insertion loss. Listed below are the loop design guidelines for Total Reach
DDS:
• All loops must be nonloaded.
• Actual measured loss (AML) should not exceed 50 dB at 13.3 kHz (135 Ω termination), the
NOTE
The 50 dB AML limit includes 6 dB of signal margin to account for potential
near‐end cross talk (NEXT) from other digital services that may be
provisioned in the same binder group.
• Loop length should not exceed 50 kft.
• Bridged tap length should not exceed 12 kft.
• Background noise level should not exceed 34 dBrn.
• Impulse noise level should not exceed ‐40 dBm, (+50 dBrn).
Plastic Cable
19 Gauge PIC (0° F)
19 Gauge PIC (70° F)
19 Gauge PIC (120° F)
22 Gauge PIC (0° F)
22 Gauge PIC (70° F)
22 Gauge PIC (120° F)
24 Gauge PIC (0° F)
24 Gauge PIC (70° F)
24 Gauge PIC (120° F)
26 Gauge PIC (0° F)
26 Gauge PIC (70° F)
26 Gauge PIC (120° F)
Line Configuration
27 kft 26 AWG
36.25 kft 24 AWG
50 kft 22 AWG
61180105L1-5C
Nyquist frequency of Total Reach DDS.

Table 8. Cable Type and Temperature Loss Data @ 13.3 kHz

Table 9. Total Reach DDS Insertion Loss Measurements

dB Loss/kft Paper Cable
0.5302 19 Gauge PULP (0° F)
0.6083 19 Gauge PULP (70° F)
0.6610 19 Gauge PULP (120° F)
0.912 22 Gauge PULP (0° F)
1.0258 22 Gauge PULP (70° F)
1.1015 22 Gauge PULP (120° F)
1.2571 24 Gauge PULP (0° F)
1.3982 24 Gauge PULP (70° F)
1.4917 24 Gauge PULP (120° F)
1.6751 26 Gauge PULP (0° F)
1.8469 26 Gauge PULP (70° F)
1.9608 26 Gauge PULP (120° F)
@13.3 kHz
50.12 dB
50.00 dB
50.24 dB
Deployment Guidelines
dB Loss/kft
0.5616
0.6415
0.6955
0.9454
1.0606
1.1370
1.2900
1.4324
1.5268
1.6823
1.8568
1.9718
@ 28 kHz
65.35 dB
62.50 dB
59.33 dB
27