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Symmetricom's 1050A Quartz Frequency Standard is a multiple output instrument suitable for 19" rack mounting. The instrument features a selected third overtone SC-cut precision quartz crystal with drive levels optimized for very low aging, excellent short and long term frequency stability, and retrace characteristics.
The quartz crystal oscillator exhibits unusually high spectral purity at frequencies close to the carrier frequency permitting multiplication to millimeter-wave frequencies with excellent signal-to-noise ratio. A single stage, solid-state oven, advanced design and careful component selection techniques ensures the instrument’s highly stable operation and ruggedness, normally operated from a 115 or 230 VAC, 47 to 400 Hz power source, the instrument also offers a built-in standby battery and internal battery charger. Switch over to this internal battery is automatic in the event of external power failure. Operating controls and monitors are conveniently located on the front panel. LED status monitors indicate Power On, Power Alarm, Oven Ready (oscillator at operating temperature) Battery On and Battery Charge. A built-in meter and thumb wheel switch permit monitoring of supply voltage, control voltage, oscillator oven and battery voltage and battery charging current. Five digital thumb wheel switches permit offset of the frequency over a range
of 4.0E 7. Rear panel connections include fused power input connections and 1 MHz, 5 MHz and 10 MHz output BNC connectors. 1 PPS outputs are also available. A frequency-control voltage can be applied through a BNC connector for external tuning of the crystal oscillator.
The 1050A satisfies a wide variety of applications with stringent requirements for precision time and frequency in radar systems, missile range timing systems, deep space communications, satellite command terminals, GPS monitoring stations, calibration labs and test equipment |
