LISA-C2 series and FW75-C200 - System Integration Manual
UBX-13000620 - R21
Early Production Information
Features description
Page 70 of 103
3.4.2
AT+UTEST=0
This command is only available in non-signaling mode. Send AT+UTEST=0 command after terminating the
testing procedure. This command allows the module to enter normal mode and closes the test interface.
Nevertheless, the module automatically returns to normal mode after switch-off or reset.
Since no other AT command is available in available in non-signaling mode, the AT+CPWROFF command cannot
be used
After sending the AT+UTEST=0 command, wait until the normal switch-on boot sequence initializes the AT
interface before entering any AT commands.
3.4.3
AT+UTEST=1
This command allows the module to enter non-signaling mode. All other +UTEST command modes are only
available in non-signaling mode.
Since no other AT commands are allowed during non-signaling mode, the AT+CMEE=2 command should
be sent before activating the test interface. The error description can also be displayed in non-signaling
mode.
3.4.4
AT+UTEST=2
The AT+UTEST=2 command tests the receiving power level. This measurement of power level can be done using
the following syntax
:
AT+UTEST=2,<par1>,<par2>,<par3>
<par1>,<par2>,<par3> are command parameters that can optionally be set. If the parameter is omitted, the
default value is used
The command response provides the receiver measurement report as shown below, where min,avg and
max values are antenna RF level estimates.
+UTEST: <par1>,<par2>,<par3>,min,avg,max
An OK response will be sent after a time interval when the receiver is switched off. After the OK response,
another test command can be sent.
3.4.4.1
<par1>: Channel
For testing in CDMA network, the channel number is configured by <par1> according to +UTEST AT command
syntax. The channel numbers can be the same on two different bands, but +UTEST has an internal logic which
along with <par3> calculates the frequency at which the module transmits CDMA signal
3.4.4.2
<par2>: Time Interval
<par2> defines the time interval (expressed in milliseconds) over which the receiver is active.
3.4.4.3
<par3>: Band Class
The <par3> in UTEST is reserved for Band Class selection. This along with <par1> determines the frequency at
which the module receives. Band Class 0 (800 MHz) and Band Class 1 (1900 MHz) each have their own codes.
Refer to AT commands manual for more information.
