LEXI-R422 - System integration manual
UBX-23007449 - R02
Product testing
Page 99 of 108
C1-Public
5
Product testing
5.1
Validation testing and qualification
LEXI-R422 modules are validated and tested by u-blox in the operating conditions and in certain
integration, but not all the specific characteristics of the host application end-product integrating the
module can be validated and tested by u-blox.
LEXI-R422 modules are also qualified by u-blox according to u-blox reliability stress tests policy, based
on the AEC-Q104 standard, but the specific characteristics of the host application end-product
integrating the module cannot be qualified by u-blox.
Therefore, and to be on the safe side, u-blox recommends integrators of LEXI-R422 modules to
validate, verify, qualify and test in details the host product integrating the SMD module considering
all the possible aspects, to make sure that the specific characteristics of the host application do not
lead to reduced / non-performance of LEXI-R422 modules.
Host product manufacturers are responsible to follow all the integration guidelines included in this
manual, and to perform a set of verification testing to ensure the host end-product complies with
applicable functional and/or conformity requirements.
Care has to be taken in the validation of the antennas RF circuits implemented in the host product for
the module, as they may affect compliance with applicable RF conformity requirements.
The 50
characteristic impedance of the antenna trace design on a host printed circuit board can be
verified using a Vector Network Analyzer, as done on the u-blox host PCB, with calibrated RF coaxial
cable soldered at the pad corresponding to RF input/output of the module and with the transmission
line terminated to a 50
load at the 50
SMA female connector.
Compliance of the design with RF regulatory rules defined by the FCC, ISED, RED, etc. can be verified
using a radio communication tester (callbox) as the Rohde & Schwarz CMW500, or any equivalent
equipment for multi-technology signaling conformance tests.
Care has to be taken in the validation of the VCC power supply circuit implemented in the host product
for the module, as the specific characteristics of the power supply circuit may affect compliance with
applicable functional and/or conformity requirements.
Adequateness of the power supply circuit capability can be checked by forcing the module to transmit
at the maximum power level in the supported radio access technologies using a radio communication
tester (callbox) as the Rohde & Schwarz CMW500 or any equivalent equipment.
Care has to be taken in the validation of the SIM interface circuit implemented in the host product for
the module, checking in particular rise times of the signals, as the external circuit design may affect
compliance with applicable functional and/or specification requirements.
Care has to be taken in the validation of any interface circuit connected to the module as implemented
in the host product, checking in particular the power-on, power-off and reset circuits with also any
related switch-on, switch-off and reset procedure, the communication interfaces (as UARTs, USB,
I2C), and any other circuit designed in the host product in combination with any other interface of the
module (as GPIOs, etc.), as the external design implemented in the host product may affect
compliance with applicable functional requirements.
☞
The validation, verification, qualification, and testing of the application host device integrating a
LEXI-R422 module and the compliance of the application host device with all the applicable
functional and/or conformity specifications and requirements are under the sole responsibility of
the application host device manufacturer.
