Siemens AC75 Manuel D’Utilisation

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AC75_ATC_V01.002

Page 485 of 569

10/30/06

Confidential / Released

The 

 command checks the presence and the connection status of the antenna by measuring the DC

resistance inside the antenna feed point. To allow the ME to detect the antenna, take care that the antenna circuit

meets the requirements specified in 

.

The exec command can be executed no matter whether the ME is registered to the network or deregistered. The

antenna diagnosis delivers the present status of the antenna connection. 

The following error messages may be returned by the 

 command: 

•

 

AC75 is initializing, antenna diagnosis is currently not possible. Please wait a few seconds. 

•

 

The calculation of the antenna status takes too much time because system resources are tight at the moment

(for example in network scan mode). Please wait a few seconds. 

Antenna diagnosis value
0

Normal operation, antenna connected, resistance at feed point as required

1

Antenna connector short-circuited to ground

2

Antenna connector is short circuited to the supply voltage of the host applica-

tion, e.g. the vehicle's on-board supply voltage (max. 36V) 

3

Antenna not properly connected or resistance at antenna feed point wrong or

not present 

Test Command

AT^SAD=?

Response(s)

^SAD: 

(list of supported

s)

OK

Exec Command

AT^SAD

Response(s)

^SAD: 

OK

+CME ERROR: <err>

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

SIEMENS

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