Ulf Consider taking pictures of the process. That would be a great document for users that need help. Someone will post them on there web page. I have done this for things I have built and shared. Then we can see what you are running into. As you have seen you have a huge range of expertise. Can't open or disassemble it, not with time-nuts around. We like the challenge. Hey bad is bad nothing to loose right? That opens the door to serious hacking. Regards Paul WB8TSL
On Tue, Dec 12, 2017 at 2:59 AM, Ulf Kylenfall via time-nuts < time-nuts@febo.com> wrote: > > > Emailed Oscilloquartz that now has another name: Advaoptical... This in my > capacity as aresearch engineer at Onsala Space Observatory.And the > oscillator is at my work bench. Nothingprivate/hobby about this. > The answer was that since we do not have a service agreement,they would > not disclose any information. > (Compare this with Keysight who has a free downlad area for oldmanuals. > IMO the Keysight approach benifits their businessin the long term). > So... > I went along and started to dissassemble the 8600-3. > The outer case was easy. Inside is a PCB with RF buffersand temperature > regulation circuitry. > Then there is a thermo bottle with the ovenized oscillator.This unit is > connected to the PCB using two flex cables. > The oscillator unit can simply be extracted from thebottle using an Metric > 3 mm screw lightly screwed inone of the holes in the oscillator assembly. > The assembly can be accessed by carfully unscrewingthe flex-cable end from > the other mechanics. No needto touch the three small screws at the lid. > Now it is starting to get intersting. I have not foundthe RF wiring into > the crystal. The PCB in this unitseems to deal only with temperature > regulation.Possibly, the RF is routed together with some heaterwinding. > Or the crystal and the oscillator parts is sealedin such a way that there > will be no wayto dissassemble it. There are several thermistorsglued inside > to various parts of the oscillator/ovenassembly. That will make any further > attemptsdifficult as the connecting wires are thin and delicateif they > needs to be unsoldered. > The construction is a nice piece of engineering.I'll give them that. > Right now, I cannot see any typical oscillatorcircuitry (pF, nH, RF > transistors) etc. > I think I'll contemplate on the next movefor a day or so... > > Ulf Kylenfall > > > > _______________________________________________ > 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.