User guide

Chapter 19 – Antenna Commands
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C) 112
<poweredLowlim>
The ADC value below which the powered antenna is considered to be in a shorted
condition. Possible values are 0-255. Default is 0. Not applicable to the primary
antenna.
<poweredHighlim>
The ADC value above which the powered antenna is considered to be in an open
condition. Possible values are 0-255. Default is 255. Not applicable to the primary
antenna.
Antenna Diagnostic Status +WANTS
Description: This command is used to perform an antenna diagnostic check and display the results. The
current values of the primary and secondary antenna ADC readings are compared against the
limits specified by the AT+WANTLIM command to determine the status (NORMAL, SHORT,
OPEN) of each antenna.
Syntax: Command Syntax: AT+WANTS
Command Possible Responses
AT+WANTS +WANTS: 1,2
OK
Note: primary NORMAL, secondary OPEN
AT+WANTS +WANTS: 1,1
OK
Note: primary NORMAL, secondary NORMAL
AT+WANTS +WANTS: 0,1
OK
Note: primary shorted, secondary NORMAL
AT+WANTS? +WANTS: 0,1
OK
Note: primary shorted, secondary NORMAL
Values: The +WANTS response displays the diagnostic status of the primary and secondary antennas as:
+WANTS: <primaryAntStatus>,<secondaryAntStatus>
<primaryAntStatus>
0 SHORTED (ADC value < low limit)
1 NORMAL ( low limit <= ADC value <= high limit)
2 OPEN (ADC value > high limit)
<secondaryAntStatus>
0 SHORTED (ADC value < low limit)
1 NORMAL ( low limit <= ADC value <= high limit)
2 OPEN (ADC value > high limit)
Notes: 1. For hardware versions 2.1 and later, the diagnostic status of the secondary antenna cannot
be determined in the un-powered state (AT+WANT=0) and will report NORMAL.
2. If the hardware version is 2.1 or later and a shorted condition occurs on the secondary
antenna in the powered state, the hardware will automatically disable power to the secondary
antenna to prevent damage to the modem. In this case, you must re-issue AT+WANT=1 to
re-enable power to the secondary antenna.
Antenna Diagnostic Status Change Unsolicited Response +WANTS
Description: The +WANTS unsolicited message is reported to the application for a change in
the diagnostic status of one or both of the antennas. The AT+WANTPOLL
command is used to specify which antenna is checked and the interval between
checks. The AT+WANTLIM command is used to set the limits for the
comparison.
Syntax Response Syntax: +WANTS: <primaryAntStatus>,<secondaryAntStatus>