Horst - Well, have a good night rest. I did bring one of my oscillators upstairs, into my lab. The oscillator that is not in pieces. Managed to get it to play right away. Some of it is coming back to my memory and I believe there are two ovens. One is a proportionately controlled oven run by the 24 volts, and the other is a quick oven to get things up to temperature. I am convinced that the two Teflon connectors are for the quick oven which is controlled by a thermostat. I put 40 volts on mine and it only drew about 200 ma, but, it automatically shut off after about 1/2 hour. So, it seems like it may be working. I believe the terminal marked 15 Volts is a regulated output in case you want to use it with the EFC inputs through an external multi-turn potentiometer. The output marked "M" I believe is to monitor the oscillator status. I tried to replicate the old HP 105 oscillator with my oscillator assembly and had a meter and a 10 turn pot on the front panel along with a meter selector switch. I'll try and find the old 105 manual, as I know I have it someplace. Regards - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of A.H.Schmidt Sent: Saturday, February 11, 2006 8:50 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] HP 00105 oscillator Hi Mike, thanks for your replay. I actually have the oscillator going since a couple of weeks. I connected 24V for the oven and 20 V for the oscillator. There is also a 15V connection, I have no idea what for and the 2 connections on the other end which I also don,t know what it is for. The voltage control inputs are SMC connections, (I suppose for low noise) but there are separate + an _ connections. I left them open and adjusted the frequency with the course frequency control only. I am comparing the frequency to a home build receiver for TV line frequencies, Phase locket to give me 10 and 5MHz output. According to the TV station CH9 in Melbourne, they are locket to a Cesium standard. I can compare the frequency to 9 digits and it hasn't moved even 1 digit with Varying temperatures of about 18 Deg C to 38 Deg C (In my Garage). I am really keen to build this unit in to a box and multiply the output by 2 to get 10MHz. However I wait, until I have all the information on the connections. Thanks again for the speedy replay. I am going to bed now, It is 1/4 to 1 O'Clock in the morning. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
