Introduction
GRCalibration is a Goodix proprietary Bluetooth calibration tool to calibrate the frequency offset of 32 MHz crystal oscillators for GR551x/GR5405 SoCs and PLT. By controlling the clock signal of the target device, it enables the target device to generate single carrier signals that can be analyzed with a spectrum analyzer to observe frequency offset. This capability allows precise adjustment of the XO-Offset, ensuring accurate calibration to meet specified requirements.
Tip:
Due to PLT hardware aging, maintenance, or other factors that may cause crystal frequency offset, it is recommended to perform crystal calibration for the PLT regularly every year.
The figure below shows the graphic user interface (GUI) of GRCalibration:
