Deployment Guidelines; Figure 6. Dds-Dp Response To Dds-R Ace; Table 4. Cable Type And Temperature Loss Data@13.3 Khz; Table 5. Dds Insertion Loss Measurements - ADTRAN Total Reach DDS-DP 5 Series Installation And Maintenance Manual
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- Installation and maintenance manual (8 pages)
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Loopback Pushbutton (Remote Unit)
The DDS-DP initiates a loopback in response to a
remote unit with a loopback pushbutton feature,
Figure 6. This allows a field technician or craft
personnel to conduct loop testing from the remote end
independent of the test center or CO.
Series 5
DDS-DP
Loopback
Toward Customer
Figure 6. DDS-DP Response to DDS-R ACE
Loopback Button
5. DEPLOYMENT GUIDELINES
The DDS-DP and DDS-R use technology designed to
eliminate the need for repeaters and concerns over
impairments caused by typical noise and bridged tap.
Listed below are the loop design guidelines for Total
Reach DDS. See Table 4 and Table 5 for more
information.
• All loops must be nonloaded.
• Actual Measured Loss (AML) should not exceed
50 dB at 13.3 kHz (135 Ω termination), the
Nyquist frequency of Total Reach DDS.
Table 4. Cable Type and Temperature Loss Data @ 13.3 kHz
P
a l
t s
c i
C
a
b
e l
9 1
G
u a
e g
P
C I
(
° 0
) F
9 1
G
u a
e g
P
C I
7 (
° 0
) F
9 1
G
u a
e g
P
C I
(
2 1
° 0
) F
2 2
G
u a
e g
P
C I
(
° 0
) F
2 2
G
u a
e g
P
C I
7 (
° 0
) F
2 2
G
u a
e g
P
C I
(
2 1
° 0
) F
4 2
G
u a
e g
P
C I
(
° 0
) F
4 2
G
u a
e g
P
C I
7 (
° 0
) F
4 2
G
u a
e g
P
C I
(
2 1
° 0
) F
6 2
G
u a
e g
P
C I
(
° 0
) F
6 2
G
u a
e g
P
C I
7 (
° 0
) F
6 2
G
u a
e g
P
C I
(
2 1
° 0
) F
61433105L1-5F
(example)
DDS-R ACE
Test
Unit
Loopback Button
d
B
L
o
s s
k /
t f
. 0
3 5
2 0
. 0
0 6
3 8
. 0
6 6
0 1
0
9 .
2 1
. 1
2 0
8 5
. 1
0 1
5 1
. 1
5 2
1 7
. 1
9 3
2 8
. 1
9 4
7 1
. 1
7 6
1 5
. 1
4 8
9 6
. 1
6 9
8 0
Section 61433105L1, Issue 6
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 should not exceed
-40 dBm, (+50 dBrn).
Measure noise with 50 kbit weighting
characteristic approximating a filter with a
passband of 40 Hz to 30 kHz. Background noise
level or impulse noise level is referenced from
56/64 kbps data rate in TR62310.
Table 5. DDS Insertion Loss Measurements
T
t o
l a
1
3
3 .
k
H
z
c
o
m
p
a
e r
d
i L
e n
C
o
f n
g i
r u
t a
o i
n
7 2
k
t f
6 2
A
W
G
3
. 6
5 2
k
t f
4 2
A
W
G
0 5
k
t f
2 2
A
W
G
P
a
p
r e
C
a
b
e l
9 1
G
u a
e g
P
U
L
P
(
° 0
) F
9 1
G
u a
e g
P
U
L
P
7 (
° 0
) F
9 1
G
u a
e g
P
U
L
P
(
2 1
° 0
) F
2 2
G
u a
e g
P
U
L
P
(
° 0
) F
2 2
G
u a
e g
P
U
L
P
7 (
° 0
) F
2 2
G
u a
e g
P
U
L
P
(
2 1
° 0
) F
4 2
G
u a
e g
P
U
L
P
(
° 0
) F
4 2
G
u a
e g
P
U
L
P
7 (
° 0
) F
4 2
G
u a
e g
P
U
L
P
(
2 1
° 0
) F
6 2
G
u a
e g
P
U
L
P
(
° 0
) F
6 2
G
u a
e g
P
U
L
P
7 (
° 0
) F
6 2
G
u a
e g
P
U
L
P
(
2 1
° 0
) F
NOTE
NOTE
R
e
a
c
h
D
D
S
o t
2
8
k
H
z
o f
t r
a r
d
t i
o i
n
l a
s
e
v r
c i
e
@
3 1
3 .
k
H
z
@
8 2
5
. 0
2 1
d
B
6
. 5
5 3
5
. 0
0 0
d
B
6
. 2
0 5
5
. 0
4 2
d
B
5
. 9
3 3
d
B
L
o
s s
k /
t f
. 0
6 5
6 1
. 0
4 6
5 1
. 0
9 6
5 5
. 0
4 9
4 5
. 1
6 0
6 0
. 1
3 1
0 7
. 1
9 2
0 0
. 1
3 4
4 2
. 1
2 5
8 6
. 1
8 6
3 2
. 1
5 8
8 6
. 1
7 9
8 1
D
D
S
k
H
z
d
B
d
B
d
B
5
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