HDSL4 LOOP SPECIFICATIONS
FOR OPTIMUM OPERATION
NOTE
: The H4TU-Cs P/N 1221401L6, 1221403L6, 1221404L6 support only one H4R in
the HDSL4 circuit.
■
HDSL4 circuit containing no H4Rs will reach up to 16 kft on the local loop
(24 AWG)
■
HDSL4 circuit containing one H4R will reach up to 16 kft on the first
segment and 15 kft on the second segment (24 AWG)
■
HDSL4 circuit containing two H4Rs will reach to 13.5 kft on the first
segment, 14 kft on the second segment, and 15 kft on the third segment (24
AWG) *
■
Refer to the H4TU-C or H4TU-R Installation and Maintenance Practice,
Section HDSL4 Deployment Guidelines, for other loop parameters
including Insertion Loss, Pulse Attenuation, and Resistance Budgets for
span powering
*This is one example of a circuit with two H4Rs. Other loop length
configurations are possible in compliance with loop resistance restraints.
See the H4R Installation and Maintenance Practice, Section HDSL4
Deployment Guidelines, for resistance budgets.
UNIT RESISTANCE
Measurements are with no power applied
The H4R Tip-to-Ring resistance is approximately 6
Ω
for each pair.
WARRANTY
Warranty for Carrier Networks products manufactured by ADTRAN and
supplied under Buyer’s order for use in the U.S. is ten (10) years. For a
complete copy of ADTRAN’s
U.S. and Canada Carrier Networks Equipment
Warranty
(P/N 60000087-10): (877) 457-5007, Faxback Document 414.
H4TU-C
VMDF
H4R1
H4R2
H4TU-R
TURNUP & TROUBLESHOOTING GUIDE
PRICING AND AVAILABILITY 800.827.0807
TECHNICAL SUPPORT 800.726.8663
RETURN FOR REPAIR 256.963.8722
www.adtran.com
61222441L1-22A
ADTRAN Related Housings
Part Number
Description
1150043L1
4-slot, Air-filled
1150043L2
4-slot, Gel-filled
1150087L1
T400, single slot (above ground only)
1150090L1, L2
24-slot, T400 high capacity cabinet (Pad or pole mount)
First Segment
Second Segment
Third Segment
