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AC75 AT Command Set
19.3 AT^SAD
s
AC75_ATC_V01.002 Page 485 of 569 10/30/06
Confidential / Released
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)
- AT Command Set 1
- Contents 3
- AC75 AT Command Set 10
- List of Tables 12
- List of Figures 13
- 1. Introduction 14
- 1.2 Related documents 15
- 1.3 Document conventions 16
- 1.3.1 Quick reference table 16
- 1.4 AT Command Syntax 18
- 1.4.1 Using Parameters 18
- 1.5 Supported character sets 20
- 1.10 Errors and Messages 31
- 2. Configuration Commands 32
- 2.2.1 AT&V responses 34
- 3. Status Control Commands 80
- 3.2 AT+CIND Indicator control 82
- 3.4.2 SIEMENS L2 cause 94
- Management (SM) 95
- 4.1 AT\Q Flow control 105
- 4.5 ATE Enable command echo 109
- 4.9.1 Autobauding 117
- 5. Security Commands 124
- 5.4 AT+CLCK Facility lock 134
- 5.5 AT^SLCK Facility lock 139
- 5.6 AT+CPWD Change Password 140
- 5.7 AT^SPWD Change Password 144
- 5.8 AT^SCSL Customer SIM Lock 146
- 6. Identification Commands 150
- 7. Call related Commands 156
- 7.2 ATA Answer a call 157
- 7.10 AT+CHUP Hang up call 167
- 7.29 ATP Select pulse dialing 193
- 7.30 ATT Select tone dialing 193
- 8. Network Service Commands 194
- 8.5 AT+CSQ Signal quality 203
- 8.6 AT^SMONC Cell Monitoring 204
- 8.7 AT^SMOND Cell Monitoring 206
- 8.9.1 AT^MONI responses 211
- 8.9.2 Service states 212
- 8.10.1 AT^MONP responses 214
- 8.11 AT^SMONG GPRS Monitor 215
- 8.13 AT^SHOM Display Homezone 219
- 9.5 AT+CCUG Closed User Group 230
- 9.7 AT+CCWA Call Waiting 236
- 10. Internet Service Commands 253
- 10.11.1 Example: Ping 292
- Another Host 299
- 11. GPRS Commands 308
- 12. FAX Commands 352
- 12.4 AT+FRM Receive Data 355
- 12.5 AT+FRS Receive Silence 356
- 12.7 AT+FTM Transmit Data 358
- 13.1 SMS parameters 360
- 14. SIM related Commands 402
- 15.3 Related AT Commands 426
- 16.2 ^SSTN SAT Notification 430
- 16.4 AT^SSTR SAT Response 432
- 17. Phonebook Commands 433
- 17.2 AT+CNUM Read own numbers 434
- 18. Audio Commands 456
- 18.5 AT+CMUT Mute control 459
- 18.6 AT+VTD Tone duration 460
- 19. Hardware Related Commands 481
- 19.2 AT+CALA Set alarm time 482
- 19.3 AT^SAD Antenna Diagnosis 485
- 19.6.1 Deferred shutdown 492
- 19.8.2 Selecting SPI Mode 499
- 19.8.5 Example: Using I²C Bus 504
- 20. GPIO Commands 508
- 21. Java related Commands 521
- 22. Miscellaneous Commands 529
- 23. Appendix 535
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