PCB that supports Oscilloquartz 8662/8663? - Page 1
Forum section: electronics / general

author: notfaded1
author_rank: Frequent Contributor
timestamp: April 20, 2020, 02:24:55 pm
content: Does anyone have or know of any ready to go PCB's that support the Oscilloquartz 8662/8663 style 12V DC OCXO? Or is there a circuit design you recommend for controlling them and hosting them? I'm asking because I don't want to reinvent the wheel if I don't have to. I may have to make my own PCB but if someone has a design already made that's works well that would be easier. I know Gary Sweeney made a PCB to go into the HP counters that utilized this oscillator and I could adapt something like that. I also found some open source stuff on github but didn't find any with the footprint for the 8662/8663 so I'd have to build on one of those. If anyone knows let me know. Gary still has a paypal link on his website but it's from years ago so I was a little hesitant to pull the trigger since the links are pretty old. Anyone have any suggestions? If I can't find anything I'll probably start with the github stuff and adapt something new with the 8663 footprint.Bill

author: martinr33
author_rank: Frequent Contributor
timestamp: April 23, 2020, 11:13:42 am
content: These boards work well, and the open source design is a good starting point. Gerry Sweeney is also a very reliable supplier.https://www.circuitvalley.com/2018/07/agilent-53132a-53131a-ocxo-ultra-high-stability-oven-time-base-upgrade-option-open-source.html

author: notfaded1
author_rank: Frequent Contributor
timestamp: April 23, 2020, 02:58:31 pm
content: I saw this one Martin... it's the open source I was referring to but it doesn't support the larger sized 8663 footprint. That's why I was thinking of having to make my own PCB. It's really really close though. Gerry's does have the larger footprint too but, as far as I know, isn't open sourced and I'm not sure if they are available or not the webpage is years old?

author: tkamiya
author_rank: Super Contributor
timestamp: April 23, 2020, 05:45:36 pm
content: I just used a regular perf board. If you bend the pins inwards just a little, you could do that. Of course the oscillator will not sit flush with the PCB but that seem to cause no issues.

author: notfaded1
author_rank: Frequent Contributor
timestamp: April 24, 2020, 12:19:21 pm
content: Quote from: tkamiya on April 23, 2020, 05:45:36 pmI may use the opensource project to get started and redo the footprint for the 8662/8663 since I have a bunch of them.

author: WPXS472
author_rank: Regular Contributor
timestamp: April 30, 2020, 02:59:21 pm
content: Please excuse the off topic nature of this, but how do you like these oscillators? I have 2 and in my very unscientific testing, I find them very well behaved. The ones I have are mounted on boards which have a ribbon connector I don't have the mate to. I just solder to the pins of the oscillator.

author: notfaded1
author_rank: Frequent Contributor
timestamp: April 30, 2020, 06:18:46 pm
content: I lucked out and Gerry Sweeney had a few PCB's left and he sold me some of the last few.Thank You Gerry!Also @WPXS472 I really like these oscillators. I bought a bunch so I could burn them in and test which ones are the most stable. In my recent testing of various Rb and GPS/GNSS DO's I've found out that they aren't all created the same and they do move around some when you get down to ns and ps levels. For really short term stability you really can't go wrong with an OCXO so I'm getting into them as well now.My next foray is into the FSA3011 OCXO GPSDO Atom Clock Frequency Stability Analyzer to hopefully get some different readings on my references versus the Frequency and Time Interval counters I've used up to this point.Bill

author: WPXS472
author_rank: Regular Contributor
timestamp: May 01, 2020, 02:00:28 pm
content: Have you had any experience with the HP E1938? They are supposed to be very good, but in reading about them, I see that there are good ones, and not so good ones. I have 2, and the one I have tested so far isn't one of the better ones. I could never get it to settle down. Some of this may have been retrace from having been in storage, but I left it on for quite a while and it got no better, There is a serial port, but I am not sure what one is supposed to do with that. I suspect it was a factory calibration thing.

author: notfaded1
author_rank: Frequent Contributor
timestamp: May 08, 2020, 04:07:36 pm
content: Quote from: WPXS472 on April 30, 2020, 02:59:21 pmThat ribbon connector and pcb may be for adding to HP 5313xA counter (or others device) as a precision local oscillator to replace the default lower grade standard one.Bill