Precise Time and Frequency, Inc. Specialized 4211A-11976-02

The 4211A Rubidium Frequency Standard from Quarktwin Technology Ltd. is designed for applications requiring high stability and low noise in frequency reference. It features 10MHz and 1PPS outputs, including 1PPS LVDS outputs, and offers a 1PPS input for disciplining to GPS or other satellite signals. The device operates within a 1U, 19" rack mount package and has an amplitude greater than 13 dBm. Stability metrics include an Allan deviation of 3E-11 at 1 second, 1E-11 at 10 seconds, and 3E-12 at 100 seconds. The aging rate is less than 5E-11 per month after 30 days of operation, with an overall accuracy at shipment of less than 5E-11. The phase noise performance is also noteworthy, with values reaching -145 dBc at 1 kHz offset. The unit requires an input power of 110 to 240 V AC and operates within a temperature range of 0 to 50 degrees Celsius. It has a weight of less than 12 lbs and is suitable for environments with humidity levels up to 95%, non-condensing. This product is ideal for engineers seeking a reliable and precise frequency standard for their projects.