The GPS-controlled frequency standards are especially suited for use in calibration departments, providing continuous traceability with no need for external calibration. The stability/24h is excellent; one part in a trillion.
Long-term frequency stability is provided from the built-in Cesium-controlled standards in the GPS-satellite. Very high short-term stability comes from the built-in oven controlled crystal oscillator found in the GPS-88; or the built-in Rubidium atomic clock installed in GPS-89, as its local oscillator.
|GPS-controlled frequency standard|
|Choice of Rubidium or ovenized crystal oscillator|
|Traceable internal calibration system approved by Swedish National Testing and Research Institute|
|Remote monitoring via Ethernet interface|
|No doubt-about-accuracy via display of frequency offset|
|Five standard frequency outputs; 4x10 and 1x5 MHz; Five more optional outputs|