Mounting the Chassis
800-357-104-01, Revision 01
8
September 29, 2000
HMS-357 List 4 and List 5
I
NSTALLING
THE
LIU, M
ODULE
B—F
OR
THE
HXU-357 M
ULTIPLEXER
The Line Interface Unit (LIU) Module A is preinstalled with the Wideband System 3190. Module A is used for
HXU-358 (DS3) and HXU-359 (STS-1) multiplexers, as well as for subtending STS-1 systems from an OC-3
multiplexer.
Module B is an option that is required when installing an HXU-357 List 1 DS3 multiplexer. The 10BASE-T
module is required for use with the HXU-357 multiplexer.
Figure 3.
Installing the 10BASE-T LIU, Module B
Step
Procedure
Installer Check
ü
ü
ü
ü
Whenever installing or removing units from the HMS-357 chassis, be sure to wear an
antistatic wrist strap and connect it to the ESD strap input above the HMU slot on the
inside of the chassis.
1
Align the guide pins from the 10BASE-T LIU with the guide holes in the chassis (see
H
2
Press the module into the P10 and P9 connectors until firmly seated.
H
3
Tighten the two locking screws using a #2 Phillips or slotted screwdriver.
H
4
Proceed to
“Cabling the Chassis” on page 9
.
H
Installer Signature
?
?
?
?
Date
For 10BASE-T, use a category 5 shielded cable.
RT
-48
-48
RT
FG
N
MODULE A
MODULE B
CAU
TION
:
VOLTA
GES
UP TO
200
VDC
MAY
BE P
RES
ENT
UND
ER T
HIS
COV
ER
!
INP
UT
PO
W
ER
: -4
8V, 3
0A
M
AX
!
P10
P9
Alignment pin
Alignment pin
P10
P9
10BaseT MUX
ESD strap input
