u-blox SARA-G3 Series System Integration Manual page 187

Application
Processor
AT
Commands
Application Board
Application
Processor
AT
Commands
Application Board
Figure 68: Setup with spectrum analyzer and signal generator for radiated measurement
This feature allows the measurement of the transmitter and receiver power levels to check component
assembly related to the module antenna interface and to check other device interfaces from which depends
the RF performance.
To avoid module damage during transmitter test, a proper antenna according to module specifications or a
50  termination must be connected to ANT pin.
To avoid module damage during receiver test the maximum power level received at ANT pin must meet
module specifications.
The AT+UTEST command sets the module to emit RF power ignoring GSM/GPRS signalling
protocol. This emission can generate interference that can be prohibited by law in some countries.
The use of this feature is intended for testing purpose in controlled environments by qualified user
and must not be used during the normal module operation. Follow instructions suggested in u-blox
documentation. u-blox assumes no responsibilities for the inappropriate use of this feature.
UBX-13000995 - R06
SARA-G3 series - System Integration Manual
Wireless
Antenna
SARA-G3
series
ANT
TX
Wireless
Antenna
SARA-G3
series
ANT
RX
Objective Specification
Wideband
Antenna
Spectrum
IN
Analyzer
Wideband
Antenna
Signal
OUT
Generetor
Product Testing
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