Fe-5680a manual

RUBIDIUM FREQUENCY STANDARD MODEL FEA SERIES FUNCTIONAL DESCRIPTION The RFS uses the property of atomic resonance in a Rubidium Physics Package to control the output frequency of a + MHz Voltage Controlled Crystal Oscillator (VCXO) via a Frequency Lock Loop (FLL). The FLL functional blocks. The FEA (unmodified) has its fine adjustments made only via the serial port while the LPRO has an onboard potentiometer and an external "C-Field" lead to allow disciplining and/or environmental compensation and when it comes to making very fine adjustments, it is far easier to "tweak" the FEA to "dial in" the frequency via computer than to adjust the . that there are multiple different versions of the FEA available. This module has the size x x inches respectively 25 x 88 x mm. The input power of 15 V DC is supplied through a 9-pin Sub-D connector. The current consumption is approx. 2 A during the start-up time and once the operating.

Commands are sent to the FEA using the TX line (pin 9), and response from the FEA are received on the RX line (pin 8). The TX and RX signals are referenced to system ground, pin 5. [ from A Tech Manual, Sheet 16 (PDF p. 17/19) ]. A GPS assisted 10 MHz frequency reference with Hz accuracy controlled by an Arduino Nano. Demonstration of how to program a custom frequency into the FEA (Opt 58) Rubidium Frequency Standard made by FEI.

The FEA (unmodified) has its fine adjustments made only via the serial port while the LPRO has an onboard potentiometer and an external "C-Field" lead to allow disciplining and/or environmental compensation and when it comes to making very fine adjustments, it is far easier to "tweak" the FEA to "dial in" the frequency via computer than to adjust the potentiometer in the LPRO where one doesn't have as good a "feel" for the magnitude of the adjustments that one is making. The FEA is a Rubidium Frequency Reference made by FEI (Frequency Electronics, Inc). The Rubidium Frequency Standard (RFS) FEA Series consists of self-contained, solidstate, modular,atomic frequency standards available in various options, depending on the output frequency, package, and supply voltage requirements. The entire series may be grouped into several versions according to the output interface, which can be.