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Cabling the Chassis
After installing the LIU, proceed the cable installation.
To field MDF
HDSL Loop A
CRT AUD
CRT VIS
MAJ AUD
MAJ VIS
Alarms, Test Access,
MIN AUD
MIN VIS
SYS ID
TB2
and MUX Jumpers
Figure 10. Installing Cables for Dual Subtended STS-1 Multiplexers from an OC-3 Network (Backplane View)
Step
Procedure (Continued)
4
Connect the 32-pair shielded amphenol female connector to P11, HDSL LOOP A and route to the field
MDF.
See
"Drain Wire and Cable Tie Installation" on page 9
connectors.
5
Connect the 32-pair shielded amphenol female connector to P12, HDSL LOOP B and route to the field
MDF.
6
Connect the DS3 coaxial cable from System A DS3 OUT to the Module A DS3 IN connector of subtended
STS-1, System A.
7
Connect the DS3 coaxial cable from System A DS3 IN to the Module A DS3 OUT connector of subtended
STS-1, System A.
8
Connect the DS3 coaxial cable from System B DS3 OUT to the Module B DS3 IN connector of subtended
STS-1, System B.
9
Connect the DS3 coaxial cable from System B DS3 IN to the Module B DS3 OUT connector of subtended
STS-1, System B.
After installing the cables, proceed the OC-3 fiber-optic cabling instructions.
16
10Base2
HMU
OSS RS-232 PORT
10BaseT HMU
AUX (LOOP A) TIP
GROUP 2
AUX (LOOP B) TIP
DSX (XMT FROM MUX) TIP
DSX (RCV TO MUX) TIP B
!
LINE (LOOP A) TIP
CAUTION:
GROUP 1
VOLTAGES UP TO 200 VDC
LINE (LOOP B) TIP K
MAY BE PRESENT
UNDER THIS COVER
P11
P11
HDSL LOOP A GROUP 1 (XMT TO SPAN)
Module A
HDSL TEST
TEST LINE
T
R
A
B
T
R
SSC1
TX
EXT ACO
LOOP A
SSC2
RX
LOOP B
TB6
TB3
SSC3
SSC4
DS3
DS3
BITS TIMING
SSC5
FAN
T
R
COM
NO
OUT
IN
A+
A-
SSC6
TB5
TB7
B+
B-
TB4
MODULE A
To subtended STS-1
Module A
System A
for proper installation of all amphenol
January 12, 2001
LOOP A GROUP 2
LOOP B GROUP 2
AUX (LOOP A) RING
19
1
GROUP 2
AUX (LOOP B) RING
20
2
3192 MECH
3 1
A
21
DSX (XMT FROM MUX) RING
4 2
22
DSX (RCV TO MUX) RING
C
23
5 3
D
24
6 4
E
25
7
5
F
26
8 6
LINE (LOOP A) RING
H
27
9
7
GROUP 1
J
28
10
8
VOLTAGES UP TO 200 VDC
29
11
9
LINE (LOOP B) RING
L
30
12
10
UNDER THIS COVER
13
31
14
32
15
33
16
34
35
17
36
18
P12
P12
HDSL LOOP B GROUP 1 (RCV FROM SPAN)
-48
Module B
-48
INPUT POWER: -48V, 30A MAX
RT
!
DS3
DS3
RT
OUT
IN
FGN
MODULE B
MODULE A
To subtended STS-1
Module A
System B
LTPH-SM-1014-03, Issue 3
To field MDF
HDSL Loop B
!
CAUTION:
MAY BE PRESENT
OC-cables (front)
RTN
-48VDC
Chassis ground
ESD strap input
Installer Check ü ü ü ü
H
H
H
H
H
H
Continued
HMS-358 List 1 and List 2
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