[time-nuts] Special connector for Symmetricom X72 rubidium standard
holrum at hotmail.com
Sun Aug 20 12:22:18 EDT 2017
Here's a look at the first cut of the signal interface board for the X72. The board does not bring out the LEDs. You can pick those off the connector board.
It can also be used with the SA22.c once a board that breaks out the SA22 connector pinouts to a 34 pin cable (8 pins are for the SA22.c +5V power/gnd) is built. Note the TO-220 LM7805 voltage regulator... Symmeticom does not deign to tell use mere peons how much current that needs. That regulator may need to be a switcher or need a heat sink.
The BNC on the end of the board is configured to output the programmable ACMOS output, but with a cut and jumper can output the FXO output (the 60 MHz X72 oscillator output)
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