Installing
and
Configuring
Processor
Modules
Configuring
Jumper
J6 on
the
El
Port
Adapter
By
default
channelized
El
port
adapters
are
set
with
capacitive
coupling
between
the receive
Rx
shield
and
chassis
ground
This
provides
direct
current
DC
isolation
between
the chassis
and
external
devices
as
stated
in the
G.703
specification
Jumper
J6 controls
this
function
To
make
changes
remove
the
El
port adapter
from
the
mother board
place
one
of the spare
jumpers on
J6
pins
one and two
or pins
two
and
three
refer
to
Table
5-8
and
replace
the port adapter
on
the
mother board
Pin
of J6
is
designated
with
square
See
Figure
5-11
Figure
5-11
Location
of
Jumper
J6 on
the
El
Port
AdapterPartial
View
El
port
adapter
Cable
connector
Jumper
J6
Table
5-8
Jumper
Settings
and
Functions
Jumper
Pins
and
Impedance
Function
J6
and
for
120
ohm
Controls
capacitive
coupling
for either
120-ohm
or
75-ohm
operation
an
and
for
75
ohm
installed
jumper
directly
connects
the
Rx
shield
to
chassis
ground
Warning
To
prevent
problems
with
the
El
interface
and
to
reduce
the potential
for
injury
jumper
J6 should
be
installed
by
trained
service
personnel
only
For
either
impedance
option
jumper
installed
at
J6 bypasses
the
AC-decoupling
capacitor
to
ground
thereby
coupling
the
interface
directly
to
AC
This
is
setting
that
could
pose
risk
of severe
injury
By
default
and
for
safety
J6 has
no jumper
installed
After
you
set
jumper
J6
proceed
to
the section
Removing
and
Replacing
MIP
Port
Adapters
to
replace
the
MIP
port
adapter
5-50
Cisco
7513
Hardware
Installation
and
Maintenance
Summary of Contents for 7513 Series
Page 1: ......
Page 11: ...Cisco 7513 Hardware Installation and Maintenance ...
Page 121: ...Site Log 2 56 Cisco 7513 Hardware Installation and Maintenance ...
Page 162: ...Troubleshooting the Processor Subsystem 4 10 Cisco 7513 Hardware Installation and Maintenance ...
Page 266: ...Interface Processor LEDs B 16 Cisco 7513 Hardware Installation and Maintenance ...
Page 270: ...C 4 Cisco 7513 Hardware Installation and Maintenance ...
Page 288: ...18 Cisco 7513 Hardware Installation and Maintenance ...