Mercedes-Benz ML320. Manual — part 243

ANTENNA SYSTEM (ATS) ARRANGEMENT OF COMPONENTS - GF82.62-P-0001-03D

Model 163

Fig. 62: Identifying Antenna System (ATS) Components Arrangement

ANTENNA SYSTEM (ATS), FUNCTION - GF82.62-P-0001GH

MODEL 163

2001 Mercedes-Benz ML320

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

me

Fig. 63: Identifying Antenna System Function - Block Diagram

2001 Mercedes-Benz ML320

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

me

Fig. 64: Identifying Antenna System Block Diagram (01.09.01)

Preliminary remark

This description concerns mainly the audio, CTEL and navigation antenna system for vehicles fitted with
COMAND or radio and navigation unit (MCS).

General

The different antennas are matched in terms of design to their specific reception and transmitting ranges.

A distinction must be made between passive and active antennas:

Passive antennas do not require a voltage supply, they can therefore not directly amplify the radio signal
received.

Active antennas are supplied with voltage. They feature an integrated amplifier.

The voltage can be supplied over separate cables or over the coaxial cables over which the actual signals are
transmitted simultaneously ( phantom feed ) . In this case, no separate leads are required for the power
supply .

2001 Mercedes-Benz ML320

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

me

A further distinction in terms of the antennas is that certain antennas are used only for reception while others
are used both for reception as well as for transmission .

Function up to 31.08.01

The CTEL and GPS roof antenna (A2/49 ) is supplied with direct voltage via the antenna cable ( phantom
feed ).

It is connected by a coaxial cable to the CTEL and GPS antenna splitter (A2/57) . These two components
ensure reception and transmission of the GSM signals and reception of the GSP signals .

Function as of 01.09.01

The CTEL and GPS roof antenna (A2/49) has the antenna splitter and an antenna amplifier integrated, which
eliminates the need for the CTEL and GPS antenna splitter (A2/57) .

The detailed descriptions of the individual systems and components are given in the reference documents

listed below.

SPEAKER SYSTEM (LSA) ARRANGEMENT OF COMPONENTS - GF82.62-P-0002-01D

Model 163

Cockpit management and data system
(COMAND) function

GF82.85-P-
0003GH

Modular control system (MCS), function

GF82.85-P-0011GI

Rear window antenna,
location/purpose/design/ function

GF82.62-P-
3106GH

FM/AM antenna amplifier,
location/purpose/ design/function

GF82.62-P-4101A

GPS/CTEL roof antenna,
location/purpose/ design/function

GF82.70-P-4111A

Antenna, location/purpose/design/function Valid up to

31.08.01

GF82.85-P-
3107GH

2001 Mercedes-Benz ML320

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

me