The AR-51A Series of products offers militarized Rubidium Atomic Clocks, which are synchronized to the Global Positioning System (GPS), thereby providing extremely accurate time & frequency.

The AR-51A family incorporates numerous features into a single box, including a Rubidium Standard, an internal GPS receiver a Rubidium-GPS DPLL (disciplining) circuit, time codes, different output frequencies and display. The Rubidium clock is phase locked to the GPS or other external inputs (as a back-up to GPS system). All outputs are derived from the Rubidium clock which maintains time and frequency when GPS or other inputs are interrupted.

The AR-51A family has been fully qualified for operation in harsh stressed environments on ground mobile, airborne, fighter aircraft, Helicopter and ship borne platforms.

The AR-51A may include numerous other unique options denoted as Additional Options...