On the home page of boot,press the 【Settings】button to enter the settings interface;
Press the▲▼button move to“System setting”;Press the【Enter】button to enter;
Press the【Enter】button to the SBAS;
Press ▲▼ button to turn on or turn off;
After finishing setting,press the power-off button to exit.
Note: after setting this function, it must click "return/return to the superior" to take effect. If it is on, it will refresh the state of s in real time. If there is SBAS signal, it will display s on the right side of star number; if there is no SBAS signal, it will not display s. Use: measurement accuracy is higher when s signal is stable.