GPS/GLONASS Reference Clock - Inside GNSS

GPS/GLONASS Reference Clock

Pendulum Instruments, an Orolia Group company, offers the GPS-12RG, a combined GPS and GLONASS controlled frequency standard. This portable (weight, 3.1 kilograms) reference clock is designed for laboratory and telecommunications applications and can trace its operation to both GPS and GLONASS satellites. An internal rubidium oscillator provides stability of a few parts in 10-12, also in hold-over operation in cases when satellite contact is lost, according to the company.

Pendulum Instruments, an Orolia Group company, offers the GPS-12RG, a combined GPS and GLONASS controlled frequency standard. This portable (weight, 3.1 kilograms) reference clock is designed for laboratory and telecommunications applications and can trace its operation to both GPS and GLONASS satellites. An internal rubidium oscillator provides stability of a few parts in 10-12, also in hold-over operation in cases when satellite contact is lost, according to the company. The instrument is a further development of the company’s GPS-12R, which uses only GPS satellites to control its output frequency. Measuring 210 x 108 x 395 millimeters (8.25 x 3.6 x 15.6 inches), the GPS-12RG operates on line voltage of 100V to 240Vrms (±10%), 50 to 400 Hz, and can optionally use an external 12VDC supply or internal NiMH batteries. Pendulum Instruments, Bromma, Sweden.