User's Manual

TOBY-R2 series - System Integration Manual
UBX-16010572 - R04 Product testing
Page 135 of 147
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 automatically in production
line. Stringent quality control process has been implemented in the production line. Defective units are analyzed
in detail to improve the production quality.
This is achieved with automatic test equipment (ATE) in production line, which logs all production and
measurement data. A detailed test report for each unit can be generated from the system. Figure 70 illustrates
typical automatic test equipment (ATE) in a production line.
The following typical tests are among the production tests.
 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, SIM card communication)
 Digital tests (GPIOs and other interfaces)
 Measurement and calibration of RF characteristics in all supported bands (such as receiver S/N verification,
frequency tuning of reference clock, calibration of transmitter and receiver power levels, etc.)
 Verification of RF characteristics after calibration (i.e. modulation accuracy, power levels, spectrum, etc. are
checked to ensure they are all within tolerances when calibration parameters are applied)
Figure 70: Automatic test equipment for module tests