Mercedes-Benz ML320. Manual — part 255

ANTENNA SPLITTER, LOCATION - GF82.85-P-3107-01B

Model 163 with code 353

Fig. 93: Identifying Antenna Splitter Location

It is possible to connect a GSM telephone to the connector not specified using a coaxial cable.

ANTENNA SPLITTER, DESIGN - GF82.85-P-3107-03B

Model 163 with code 353

The CTEL and GPS antenna splitter (A2/57) consists of the following components:



Active frequency splitter with GPS antenna amplifier



Coaxial connection socket for CTEL and GPS roof antenna (A2/49)



Coaxial connection socket for GSM telephone



Coaxial connection socket for GPS receiver

The power for the CTEL and GPS antenna splitter (A2/57) is supplied via coaxial cable from the GPS

receiver (phantom feed).

ANTENNA SPLITTER, DESIGN - GF82.85-P-3107-03GH

Model 163 up to 31.08.01

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

Fig. 94: Identifying CTEL And GPS Antenna Splitter Design

A GSM cellular telephone can be connected by means of a coaxial cable to the non-designated

connection.

The CTEL and GPS antenna splitter (A2/57) consists of the following components:



Active frequency splitter with GPS antenna amplifier



Coaxial socket for the CTEL and GPS roof antenna (A2/49)



Coaxial socket for a GSM CTEL



Coaxial socket for a GPS receiver

The voltage for the CTEL and GPS antenna splitter (A2/57) is supplied via the coaxial cable from the

GPS receiver ( phantom feed ).

ANTENNA SPLITTER, FUNCTION - GF82.85-P-3107-04B

Model 163 with code 353

The CTEL and GPS antenna splitter (A2/57) has the following functions:



Separating the signals received from the CTEL and GPS roof antenna (A2/49) :

The GSM and GPS signals are received by the antenna splitter via an antenna lead and leave the CTEL
and GPS antenna splitter (A2/57) via two separate coaxial cables. In addition the GPS signals are
amplified.



Decoupling the GPS receiver from the GSM telephone transmitter:

It must be ensured that the telephone transmitter signals do not reach the GPS receiver. The CTEL and
GPS antenna splitter (A2/57) allows them to pass only in the direction of the roof antenna.

ANTENNA SPLITTER, FUNCTION - GF82.85-P-3107-04GH

Model 163 up to 31.08.01

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

The CTEL and GPS antenna splitter (A2/57) has the following functions:



Separating the receiving signals from the CTEL and GPS roof antenna (A2/49) :

The GSM and the GPS signals are received along an antenna cable at the antenna splitter and leave the
CTEL and GPS antenna splitter (A2/57) in two separate coaxial cables. The GPS signals are
additionally amplified.



Decoupling the GPS receiver from the transmitter of the GSM cellular telephone:

The transmission signals of the cellular telephone must not reach the GPS receiver. They are passed
through by the CTEL and GPS antenna splitter (A2/57) only in the direction of the roof antenna.

ANTENNA SPLITTER, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.85-P-3107B

MODEL 163 with CODE (353) Audio 30 APS

Fig. 95: Identifying CTEL And GPS Antenna Splitter Design

It is possible to connect a GSM telephone to the connector not specified using coaxial cable.

ANTENNA SPLITTER, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.85-P-3107GH

CTEL and GPS antenna
splitter, location

GF82.85-P-3107-01B

CTEL and GPS antenna
splitter, purpose

The CTEL and GPS
antenna splitter (A2/57)
is required for operating a
GSM telephone and a
GPS receiver with one
single antenna cable.

CTEL and GPS antenna
splitter, design

GF82.85-P-3107-03B

CTEL and GPS antenna
splitter, function

GF82.85-P-3107-04B

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

MODEL 163 up to 31.8.01

Location of component

Fig. 96: Identifying Antenna Splitter Components Location

MODULAR CONTROL SYSTEM (MCS) SURVEY OF SYSTEM COMPONENTS LOCATION/TASK/DESIGN/FUNCTION -
GF82.85-P-9995GIZ

MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(819) 6-disk CD changer in trunk with CODE (491) U.S. version

CTEL/GPS antenna
splitter, location

The CTEL and GPS
antenna splitter (A2/57)
is located in the center
console on the left-hand
side in the radio slot.

CTEL/GPS antenna
splitter, purpose

The CTEL and GPS
antenna splitter (A2/57)
is required for operating a
GSM cellular telephone
and a GPS receiver over a
single antenna cable.

CTEL/GPS antenna
splitter, design

GF82.85-P-3107-03GH

CTEL/GPS antenna
splitter, function

GF82.85-P-3107-04GH

Radio/navigation unit
location/task/design/ function

GF82.61-P-4109GI

Sound amplifier
location/task/design/function

with CODE (810)
Sound system

GF82.62-P-3100GH

Antenna splitter,
location/task/design/function

GF82.85-P-3107B

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me