Total Access
®
3000/3010 System Manual
6TAAPP331-1E
TOTAL ACCESS 3000/3010
APP-331
Page 6 of 6
© 2002, ADTRAN, Inc.
Table 3. Maximum DC Loop Resistance Worksheet
A. Total length of 26 AWG cable in kft.
____________ kft
B. Calculate total 26 AWG DC loop resistance (A x 83)
____________ ohms
C. Total length of 24 AWG cable in kft.
____________ kft
D. Calculate total 24 AWG DC loop resistance (C x 52)
____________ ohms
E. Total length of 22 AWG cable in kft.
____________ kft
F. Calculate total 22 AWG DC loop resistance (E x 32)
____________ ohms
G. Total length of 19 AWG cable in kft.
____________ kft
H. Calculate total 19 AWG DC loop resistance (G x 16)
____________ ohms
I.
Cable length from MDF to equipment rack in kft.
____________ kft
J.
Calculate office loop resistance (I x 32)
____________ ohms
K. Cable length from customer interface to remote unit (J x 3.0)
____________ kft
L. Calculate customer premises loop resistance (K x 32)
____________ ohms
M. Calculate total loop resistance (B + D + H + J + L)
____________ ohms
N. Consider HDSL t-r resistance in total (M + 5)
____________ ohms
Note: Total resistance must be < 800 ohms.