Service Manual

211
6802800U74-AN
Chapter 5: Interconnection and Internal Cabling
5.6
CAN Bus Cabling
The CAN Bus is integrated in the Site Controller. There is one CAN Bus in the cabinet. The CAN Bus
can be connected to the Site Controllers, PSUs, DPMs, and ATCCs.
NOTICE: The pinout has been designed so that an accidental mis-connection by one or into
one of the other RJ45 connectors (Ethernet, Service port, or E1) does not damage any circuitry.
The CAN Bus is a 120 twisted line with termination at the ends.
5.6.1
CAN Bus Cabling – MTS LiTE
The Site Controller contains the internal termination in one end of the CAN Bus, and the last Duplexer
in the CAN Bus has a terminator in one connector.
Table 67: CAN Bus Cabling for MTS LiTE
In-
dex
Cable Part
Number
From Unit / Connection
Name
To Unit / Connection
Name
Notes
MTS LiTE
1 3066575B01 Site Controller/ CAN Power Supply Unit/
CAN1
Red cable
2 3066544B25 Power Supply Unit/
CAN2
Duplexer/ CAN1 Red cable
3 0966513A01 Duplexer/ CAN2 CAN Bus termination
Figure 122: CAN Bus Cabling Diagram for MTS LiTE
JUNCTION PANEL TOP VIEW
FRONT VIEW
GND
DUPLEXER
TOP VIEW
TX/RX
Ant. 2
Ant. 1
LINK 1 LINK 2
X.21
AC in
DC GPS
RGPS
User Alarms/Controls
BR1 BR2
E1 Bat. Temp
Tx
POWER SUPPLY UNIT
FRONT VIEW
BASE RADIO
FRONT VIEW
FRONT VIEW
SITE CONTROLLER
REAR VIEW
CAN 1 CAN 2
SITE CONTROLLER
POWER SUPPLY
BASE RADIO
Power
Power 2
Rx 1
Power 1
AC In
DC in
AC In Status
DC In Status
DC Out / Temp
Rx 2
BR1
BR3
BR2
BR4
Rx 3
FRONT VIEW
CAN
PRESELECTOR
TOP VIEW
RX
DC Out.
Reset
Service
E1
Exp. Cab
Fan 1
Status
TX
Red
In
Fan 2
AUX
Red.
Out
BR1 BR2
Tx
Status
Status
BR
Alarm
Fan 3
Active
Mode
ATCC
DC Out
Status
GPS
BTS Alarm
Battery Temp.
Service
Sens.
SC1
DC in
Battery
SC2
Reset
CAN 1
CAN 2
GPS
Alarms/Control
X.21/Remote GPS