AFC measurement

The AFC measurement function measures the AFC error value for a given frequency. The default error value is 0.

Syntax:

%XRFTEST=<test>,<operation>,<param0>,<param1>,<param2>

The AFC measurement command parameters and their defined values are the following:

<test>
4 – AFC
<operation>
1 – ON (measure)
Note: OFF <operation> is not needed due to automatic stop. Mode is always LTE-M. The stored value is reset when the device is booted.
<param0>
3GPP band number
<param1>
Frequency (100 kHz)
<param2>
RX signal power at the System in Package (SiP) antenna port in dBm

Response syntax:

%XRFTEST: <AFC_error_value_Hz>,<AFC_error_value_Q30>

The response parameters and their defined values are the following:

<AFC_error_value_Hz>
Measured AFC error value in Hz format
<AFC_error_value_Q30>v1.2.x≥1pti_v1.1.x≥1
Measured AFC error value in relative signed Q30 format

The following command example measures the AFC error value for band 1, 2140.0 MHz, -40 dBm:

AT%XRFTEST=4,1,1,21400,-40 
%XRFTEST:349,175 
 OK