Hi …. the thicker one is a double oven. Well worth the effort.
Bob On Feb 26, 2013, at 2:58 AM, Chuck Forsberg WA7KGX N2469R <c...@omen.com> wrote: > All Trimble OCXOs may work in a Thunderbolt, but not all are drop-in > replacements. > The one I got was much thicker than the original dead part, and the polarity > of the > control signal is inverted. I got it working but it won't fit in the > original enclosure. > > On 02/25/2013 04:12 PM, Bob Camp wrote: >> Hi >> >> Keep in mind that the top label on the OCXO shows the order number for the >> part, not it's part number. Anything you find at auction that's labeled >> "Trimble OCXO" probably will work with the TBolt. >> >> Bob >> >> On Feb 25, 2013, at 6:47 PM, Garren Davis <garren.da...@qlogic.com> wrote: >> >>> That makes sense. My inner oven is about 65C. I raised it to that just to >>> get the DAC voltage >>> close to 0v. I can raise it some more to get it between .1 and .9v. >>> >>> I started to look for OCXO's but couldn't find one with the same part >>> number as mine. Mine >>> is 37265 and the others I found did not look like they had the same pinout. >>> Does the tbolt >>> accommodate other model OCXO's? It looks like the circuit board has extra >>> through holes and >>> I always wondered if it was for different OCXO models. >>> >>> Anyways I wanted to see if my homebuilt oven could match a commercial >>> product. It was built >>> from a 73 Amateur Radio magazine article over 10 years ago. >>> >>> Garren >>> >>> >>> -----Original Message----- >>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>> Behalf Of Bob Camp >>> Sent: Monday, February 25, 2013 2:11 PM >>> To: 'Discussion of precise time and frequency measurement' >>> Subject: Re: [time-nuts] Lady Heather numbers >>> >>> Hi >>> >>> A "typical" TBolt OCXO will settle out with a control voltage that's >>> slightly positive (maybe 0.1 to 0.9V) rather than negative 0.7. >>> >>> Since the TBolt is rated to +70C, it's a good bet that the oven in the OCXO >>> is running above 85C. Once things stabilize, you may want to bump your oven >>> temperature up and see what it does to the frequency. >>> >>> Of course with TBolt OCXO's selling at auction for $20 you may or may not >>> want to go to far with this. >>> >>> Bob >>> >>> -----Original Message----- >>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>> Behalf Of Garren Davis >>> Sent: Monday, February 25, 2013 12:59 PM >>> To: Discussion of precise time and frequency measurement >>> Subject: Re: [time-nuts] Lady Heather numbers >>> >>> >>> >>> Thanks. I worry a little bit because my setup is not the normal thunderbolt >>> running on the shelf or a rack. The oven for my oscillator is broken so I >>> removed it from the circuit board and put it in a double oven with >>> proportional controller that I built for a long ago project. >>> The thunderbolt is in the outer oven running about 45C and the oscillator >>> is in the inner oven running about 65C. The temperature rise on the display >>> is probably the furnace in the house turning on this morning. I notice that >>> the DAC voltage also rises and falls with the temperature change and wonder >>> if that affects the oscillator in the inner oven. >>> >>> I'll let it run for the rest of the week and see what happens. >>> >>> Garren >>> >>> >>> -----Original Message----- >>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>> Behalf Of Bob Camp >>> Sent: Monday, February 25, 2013 9:35 AM >>> To: 'Discussion of precise time and frequency measurement' >>> Subject: Re: [time-nuts] Lady Heather numbers >>> >>> Hi >>> >>> Based on a very short display time, nothing looks seriously broken. I'd >>> suggest running the OCXO calibration routine at some point. Everything is >>> still warming up / settling out for the first week or two, so who knows >>> where it will finish out at. >>> >>> Bob >>> >>> >>> >>> -----Original Message----- >>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>> Behalf Of Garren Davis >>> Sent: Monday, February 25, 2013 12:00 PM >>> To: Discussion of precise time and frequency measurement >>> Subject: [time-nuts] Lady Heather numbers >>> >>> >>> Hi, >>> >>> I have been playing with my thunderbolt and Lady Heather over the weekend. >>> I hope it's ok that I attached a screen dump of what I have. Can anyone >>> comment on the picture. It's been running less than a day and I don't know >>> if what I have would be considered good as far as accuracy and stability is >>> concerned. >>> >>> Thanks. >>> >>> Garren >>> >>> >>> >>> >>> >>> >>> ________________________________ >>> >>> This message and any attached documents contain information from QLogic >>> Corporation or its wholly-owned subsidiaries that may be confidential. If >>> you are not the intended recipient, you may not read, copy, distribute, or >>> use this information. If you have received this transmission in error, >>> please notify the sender immediately by reply e-mail and then delete this >>> message. >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >>> ________________________________ >>> >>> This message and any attached documents contain information from QLogic >>> Corporation or its wholly-owned subsidiaries that may be confidential. If >>> you are not the intended recipient, you may not read, copy, distribute, or >>> use this information. If you have received this transmission in error, >>> please notify the sender immediately by reply e-mail and then delete this >>> message. >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >>> ________________________________ >>> >>> This message and any attached documents contain information from QLogic >>> Corporation or its wholly-owned subsidiaries that may be confidential. If >>> you are not the intended recipient, you may not read, copy, distribute, or >>> use this information. If you have received this transmission in error, >>> please notify the sender immediately by reply e-mail and then delete this >>> message. >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > -- > Chuck Forsberg WA7KGX c...@omen.com www.omen.com > Developer of Industrial ZMODEM(Tm) for Embedded Applications > Omen Technology Inc "The High Reliability Software" > 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
