2
Section 61242.047L2-13, Issue 1
61242.047L2-13A
0
12
11
10
9
8
7
6
5
4
3
2
1
0
1
2
3
4
WORKING LENGTH OF 26 GAUGE CABLE (KFT)
WORKING LENGTH OF 24 GAUGE (OR COARSER) CABLE (KFT)
5
6
7
8
9
2.5
INVALID HDSL CABLE LENGTHS
2.0
1.5
1.0
0.5
0.0
TOTAL
BRIDGED
TAP
LENGTH
(KFT)
VALID HDSL CABLE LENGTHS
ADTRAN Customer Service:
ADTRAN Telco Technical Support ............... (800) 726-8663
Standard support hours ................................ Monday-Friday
7 a.m. - 7 p.m. CST
Emergency support ................... 7 days/week, 24 hours/day
Sales ............................................................. (800) 827-0807
RMA (repair service) .................................... (205) 963-8722
Repair and Return Address:
ADTRAN, Inc.
Customer Service Department
901 Explorer Boulevard
Huntsville, Alabama 35806-2807
These approximations are to be used as guidelines
only and may vary slightly on different loops. Adhering
to these guidelines should produce performance in
excess of 10
-7
BER.
Frequency (Hz)
Maximum Loss (dB)
3,000
12.0
10,000
15.0
50,000
25.5
100,000
30.0
150,000
32.75
200,000
35.25
Loop Insertion Loss Data
Cable
Cable
Temperature:
Gauge
Type
68
°
90
°
120
°
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
2.45
2.629
19
PIC
1.551
1.587
1.634
19
Pulp
1.817
1.856
1.909
HDSL Loss Values
(200 kHz cable loss in dB/kft at 135
Ω
)
Channel Bank
Backplane
Central Office
Customer Premises
2B1Q
12 kft 24-AWG
9 kft 26-AWG
(max.)
Loop 1
Loop 1
5
6
3
4
FT1-DP
FT1-Repeater
DS1
7
13
5
15
FNID
55
49
2B1Q
12 kft 24-AWG
9 kft 26-AWG
(max.)
