SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R26
Product testing
Page 191 of 217
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
Adjustment of ADC measurement interfaces
Functional tests (Serial interface communication, analog audio interface, real time clock, temperature sensor,
antenna detection, SIM card communication)
Digital tests (GPIOs, digital interfaces)
Measurement and calibration of RF characteristics in all supported bands (Receiver S/N verification, frequency
tuning of the 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 tolerances when calibration parameters are applied)
Figure 95: Automatic test equipment for module tests
5.2
Test parameters for OEM manufacturers
Because of the testing performed 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 processes did not damage the module components
o
All module pins are well soldered on the device board
o
There are no short circuits between pins
