Siemens AC75 - Manual (Page 485)

AC75 AT Command Set
19.3 AT^SAD
s
AC75_ATC_V01.002 Page 485 of 569 10/30/06
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19.3 AT^SAD Antenna Diagnosis
The
AT^SAD
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 [2] .
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
AT^SAD
command:
• "+CME ERROR: operation temporary not allowed"
AC75 is initializing, antenna diagnosis is currently not possible. Please wait a few seconds.
• "+CME ERROR: phone busy"
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.
Syntax
Parameter Description
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
<diag>
s)
OK
Exec Command
AT^SAD
Response(s)
^SAD: <diag>
OK
+CME ERROR: <err>
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
SIEMENS - + + + + + + - + -
<diag>
(num)