I have completed a layout for the signal adapter board to connect an LPFRS or
LPRO compatible rubidium oscillator (or any general purpose Rb) to my X72 BNC
connector/RS232 board
.
The LPFRS is a small rubidium oscillator. It is usually sold mounted on a
heatsink with a small board that provides an LPRO compatible connector, except
it replaces the lamp and xtal voltage monitoring pins with a serial interface.
My interface board can replace the LPFRS board or it can be connected via the
LPRO connectors. It has support for an EFC voltage setting pot that provides
0-5V (or you can use the EFC input BNC on the connector board). It also has a
PICDIV chip for generating a 1PPS output. When used with the LPRO or an
oscillator that does not have a serial port (or you don''t want to use the
LPFRS serial port) the board also has a place for a PICPET timestamping time
interval counter chip.
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