In a partial answer to my own question, and information from a post dated 29 May 2007 by Peter Carran:
> FS5951 is a temperature controlled crystal oscillator. > My shortform Cathodon catalogue describes it as follows: > Freq stability: 0.1x10-6 0 to 60C > Osc supply: 5 volts 300 mW > Oven supply: 9 volts 1.2 W (at 25 C) > Warm-up time: 4 minutes to 0.2 x 10-6 > Output: FS5951-01 TTL drive; FS5951-02 0.8v p-p > Frequency adjustable via trimmer capacitor > The 5953 models had varicap diodes to allow phase locking but it doesn't > look like the 5951 has this facility. Models were also available with > alternative oven voltages of 5, 12, 15, 18, and 24 volts DC. Checking the PCB from which I pulled this wee beastie suggests the following pin-out: Pin 1 is output Pin 2 is ground Pin 3 is +5V Pin 4 would appear to be the +9V heater supply. I think the other pin is just a location/orientation pin judging by the information in the above quote. Diode checks: Pin 2 to 1 0.129V in both directions Pin 2 to 3 0.505V, 0.6V depending on which way round you check. Pin 2 to 4 1.61V, 0.5V depending on which way round you check. The last pin shows no connection to either ohms or diode check. Case is not connected to any pin. Dave -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David C. Partridge Sent: 18 September 2009 19:59 To: 'Discussion of precise time and frequency measurement' Subject: [time-nuts] Oscillator/OCXO Cathodeon FS59 I have in my sticky mitts a Cathodeon Oscillator Type FS59 51/01 10.0MHz. It might or might not be an OCXO. _______________________________________________ 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.
