Cisco AGS+, Установка и обслуживание оборудования

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Applique
and Cable
Pinouts
Ethernet AUI Pinout
An
attachment unit
interface
AUI
transceiver must be
used
with
most
Ethernet products
The
lOBaseT
transceiver
applique
is
an exception
to
this
Transceivers
are
available
from
variety of
sources for
thick
LAN
thin
LAN
twisted-pair Ethernet
and
other
media
Table
A-4
lists
the
Ethernet
AUI
pullout
Table A-4
Ethernet
AUI
Pinout
Pin
Circuit
Description
DO-A
Data Out
Circuit
10 DO-B
Data Out
Circuit
11
DO-S
Data Out
Circuit Shield1
DI-A
Data
In Circuit
12
DI-B Data
In Circuit
DI-S Data
In Circuit
Shield
CO-A
Control Out
Circuit
A1
15
CO-B
Control Out
Circuit
B1
CO-S
Control Out
Circuit Shield1
Cl-A
Control
In Circuit
Cl-B
Control
In Circuit
Cl-S Control
In Circuit Shield
VC
Voltage
Common
13
VP
Voltage
Plus
14
VS
Voltage Shield1
Shell
PG
Protective
Ground
Not used
Twisted-Pair
Cabiinq
There
are
several types of twisted-pair cable Unshielded
twisted-pair
UTP
cable should
be 26
to
22 American
wire
gauge
AWG0.4-
to
0.6-millimeter
mmwire
in
multiwire cable with
100-ohms impedance The
802.3
specification
states that the
maximum
length of
lOBaseT
link
segment
is
100 meters or
328
feet
of
UTP
wiring
Do
not exceed these limits
If
you are
not connected
to
hub and
another
lOBaseT
transºeiver
applique
is
connected
to
the
opposite
end
of your link the
UTP
cabling
must be
crossed as
shown
in Figure
A-4
The
RD
and
RD
signals
must be swapped
with
the
TD
and
TD
signals
When
the opposite
end
of your link
is
connected
to
hub
the
hub
performs this crossover
function
and
it is
not necessary
to cross the
cables
Cabling Specifications
A-5