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LTPH-SM-1052-04
S
ETTING UP A
The HMS-358 can be connected by an external hub to other shelves in a 10BASE-2 network.
M
10BASE-2 C
ULTISHELF
An HMS-358 multishelf 10BASE-2 configuration can be managed locally or by a remote terminal over an X.25
network as shown in
Figure
For more information on setting up an X.25 connection, refer to the HMU-319 List 5A, List 7A, and List 7C user
manuals.
Maintenance
Terminal
RS232
OR
Wideband 3190
System 1
DSX-1 (IN) PORT 1
P15
P13
LOOP A GROUP 2
10Base2 HMU
J32
CAUTION:
VOLTAGES UP TO 200 VDC
MAY BE PRESENT
UNDER THIS COVER
AUX RS-232 PORT
HDSL LOOP A GROUP 1 (XMT TO SPAN)
P11
J31
10BaseT HMU
OS RS-232 PORT
J30
DSX-1
METALLIC
TEST ACCESS
TEST ACCESS
T
R
1
2
T
R
CRT AUD
TX
OUT
CRT VIS
RX
IN
TB3
TB6
DS3
DS3
MAJ AUD
MAJ VIS
OUT
MIN AUD
BITS TIMING
FAN
TIP
RING
COM
NO
A+
A-
MIN VIS
TB5
TB7
SYS ID
B+
B-
TB2
TB4
MODULE A
OS port (J30)
10BASE-2 port (J32)
Ω
50
termination
•
The bayonet-locking connector (BNC) T-adapter must directly connect to the 10BASE-2
connector.
•
Do not use coax cable between the BNC T-adapter and J32.
•
The first and last shelf in a multishelf system require a 50Ω termination.
HMS-358 List 5 and List 6
10BASE-2 C
ONFIGURATION
15. For the purposes of installation, this manual only describes local management.
X.25
Network
DSX-1 (OUT) PORT 1
P16
P14
LOOP B GROUP 2
1
32
1
32
33
64
33
MALE
64
CAUTION:
VOLTAGES UP TO 200 VDC
MAY BE PRESENT
UNDER THIS COVER
HDSL LOOP B GROUP 1 (RCV FROM SPAN)
P12
1
32
33
MALE
64
TB1
-48VA
10BaseT
-48VB
INPUT POWER: -48V, 30A MAX
RTN
RTN
FGND
MODULE B
Coaxial cable
984 feet (300 meters) maximum
Figure 15. Multishelf 10BASE-2 Configuration
July 14, 2002
ONFIGURATION
PC
Modem
Wideband 3190
DSX-1 (IN) PORT 1
P15
P13
LOOP A GROUP 2
10Base2 HMU
J32
CAUTION:
VOLTAGES UP TO 200 VDC
MAY BE PRESENT
UNDER THIS COVER
AUX RS-232 PORT
HDSL LOOP A GROUP 1 (XMT TO SPAN)
P11
J31
10BaseT HMU
OS RS-232 PORT
J30
DSX-1
METALLIC
TEST ACCESS
T
R
1
2
TEST ACCESS
T
R
CRT AUD
TX
OUT
CRT VIS
IN
RX
TB3
TB6
DS3
MAJ AUD
OUT
MAJ VIS
MIN AUD
BITS TIMING
FAN
TIP
RING
COM
NO
MIN VIS
A+
A-
TB5
TB7
SYS ID
B+
B-
TB2
TB4
MODULE A
BNC T-type adapter
50
Setting up a 10BASE-2 Configuration
System 32
DSX-1 (OUT) PORT 1
LOOP B GROUP 2
P16
P14
1
32
1
32
33
64
33
MALE
64
CAUTION:
VOLTAGES UP TO 200 VDC
MAY BE PRESENT
UNDER THIS COVER
HDSL LOOP B GROUP 1 (RCV FROM SPAN)
P12
1
32
33
MALE
64
TB1
-48VA
10BaseT
-48VB
INPUT POWER: -48V, 30A MAX
RTN
DS3
RTN
FGND
MODULE B
Ω
termination
23
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