... , Receiver’s high stability rubidium atomic clocks will be locked in GPS, GLONASS, BEIDOU satellite’s clock signal. The accuracy of ... calibration.CC86131’s clock is trace to GPS/LONASS/BEIDOU satellite’s cesium atomic clock. The output frequency is almost ... and other agreements Display Indicator: Power, GPS, Compass, GLONASS, rubidium clocks, to maintain, fault LCD display: year, month, day, hour ...