Hi Pin 5 is the EFC reference pin. It may (or may not) have a voltage on it. If there is a voltage on it, it’s a voltage that the original OEM customer found useful. It may (or may not) have a series resistor to match up with an OEM specified trim pot.
Bob > On Nov 27, 2016, at 2:04 AM, Dave Brown <[email protected]> wrote: > > This 10 MHz unit has a 5th pin that I can't find any documentation about. > There have been posts in the past that have also indicated its use is > unknown. Looking at the base, the four connections in the corners are known > quantities. (ground, EFC, 10 MHz out and + supply) No. 5 is midway along one > side. > I thought it may be a reference supply for the EFC pin- with a 12.03 volt > supply the unknown pin measures at 2.803 volts-which is usefully above the > required EFC voltage ( ~2.4 volts) to bring it on frequency. > But does anyone have some hard data on this 'unknown' pin? > DaveB, NZ > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
