Brandywine’s RFS-700D is a miniaturized Rubidium Frequency Reference in a compact ruggedized package designed for mounting on a DIN rail system. The RFS-700D is capable of outputting 7x 10MHz frequency reference with low phase noise.
The frequency standard includes a low phase noise oven controlled quartz oscillator, which is frequency locked to the rubidium oscillator. The time constant of this loop is selected such that the short term stability (and phase noise) of the outputs are determined by the OCXO characteristics, which the long term stability is determined from the rubidium oscillator.
The frequency standard has internal temperature sensors that are used to compensate the oscillator, based on a factory calibration, to improve the overall accuracy of the system.
The unit has been designed to meet MIL-STD-810F standards for operation in demanding environments.
|Input Voltage Range||18-28 VDC|
|Nominal Input Voltage||24 VDC|
|Input Connector||Terminal Block|
|No. of Outputs||7|
|Output Frequency||10 MHz|
|Short Term Stability||1 x 10-11|
|Aging||5 x 10-11 per Month|
|100 Hz||-138 dBc/Hz|
|1 kHz||-151 dBc/Hz|
|10 kHz||-165 dBc/Hz|
|100 kHz||-165 dBc/Hz|
|Operating||-40° C to +70° C|
|Storage||-40° C to +85° C|
|Operating||10,000 ft. ASL|
|Non-Operating||50,000 ft. ASL|
|Fault Reporting||Output fail (1-7)
Rb Lock Status
PLL lock status
Over current (OCXO)temp