SARA-N2 / N3 series - System integration manual
UBX-17005143 - R13
Product testing
Page 88 of 95
C1-Public
5
Product testing
5.1
u-blox in-series production test
u-blox focuses on high quality for its products. All units produced are fully tested. Defective units are
analyzed in detail to improve the production quality.
This is achieved with automatic test equipment, which delivers a detailed test report for each unit.
The following measurements are done:
•
Digital self-test (firmware download, flash firmware verification, IMEI programming)
•
Measurement of voltages and currents
•
Functional tests (serial interface communication, real time clock)
•
Digital tests (GPIOs, digital interfaces)
•
Measurement and calibration of RF characteristics in supported bands (receiver verification,
frequency tuning of reference clock, calibration of transmitter and receiver power levels)
•
Verification of RF characteristics after calibration (modulation accuracy, power levels and
spectrum performance are checked to be within limits with calibration parameters applied)
Figure 52: Automatic test equipment for module tests
5.2
Test parameters for OEM manufacturer
Because of the testing done by u-blox (with 100% coverage), an OEM manufacturer does not need to
repeat firmware tests or measurements of the module RF performance or tests over analog and
digital interfaces in their production test.
An OEM manufacturer should focus on:
•
Module assembly on the device; it should be verified that:
o
Soldering and handling process did not damage the module components
o
All module pins are well soldered on device board
o
There are no short circuits between pins
•
Component assembly on the device; it should be verified that:
o
Communication with host controller can be established
o
The interfaces between module and device are working
o
Overall RF functional test of the device including the antenna
