Re: [time-nuts] End of Range Oscilloquartz 8600-3
It sounds like yours is different from my 8601. How old is yours? From
the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloquartz%208601%20Oscillator
If you click on 'view as story' you'll see some comments that I added to
the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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
As much as the pictures are interesting the sites blasting out crazy
amounts of ads
Totally a problem. Touch anyone of them and off you go to whatever it was.
Regards
Paul
WB8TSL
On Tue, Dec 12, 2017 at 12:32 PM, Ed Palmer ed_palmer@sasktel.net wrote:
It sounds like yours is different from my 8601. How old is yours? From
the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloq
uartz%208601%20Oscillator
If you click on 'view as story' you'll see some comments that I added to
the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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/m
ailman/listinfo/time-nuts
and follow the instructions there.
You found the secret. There is no RF wiring to the crystal. The oscillator frequency is determined elsewhere, with a free running multivibrator that is approximately on the right frequency. All this talk about precision is baloney; the circuit is stable enough to fool even the experts.
And it's not even April 1 yet.
Bob
On Tuesday, December 12, 2017, 9:32:44 AM PST, Ed Palmer ed_palmer@sasktel.net wrote:
It sounds like yours is different from my 8601. How old is yours? From
the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloquartz%208601%20Oscillator
If you click on 'view as story' you'll see some comments that I added to
the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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.
Hi
I would bet that the design changed a bit since 1983. That is a “long time ago”
in terms of OCXO design. Since we are picking up this stuff surplus or pulling
it out of older gear, who knows what era this or that example might come from.
Bob
On Dec 12, 2017, at 12:32 PM, Ed Palmer ed_palmer@sasktel.net wrote:
It sounds like yours is different from my 8601. How old is yours? From the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloquartz%208601%20Oscillator
If you click on 'view as story' you'll see some comments that I added to the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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.
I looked at the photos, but can't make any sense of your comments about the
multivibrator. Was this a joke?
Dana
On Tue, Dec 12, 2017 at 11:37 AM, Bob Albert via time-nuts <
time-nuts@febo.com> wrote:
You found the secret. There is no RF wiring to the crystal. The
oscillator frequency is determined elsewhere, with a free running
multivibrator that is approximately on the right frequency. All this talk
about precision is baloney; the circuit is stable enough to fool even the
experts.
And it's not even April 1 yet.
Bob
On Tuesday, December 12, 2017, 9:32:44 AM PST, Ed Palmer <
ed_palmer@sasktel.net> wrote:
It sounds like yours is different from my 8601. How old is yours? From
the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloquartz%208601%
20Oscillator
If you click on 'view as story' you'll see some comments that I added to
the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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.
Hi Ed,
Thanks for the pictures. I had to change the dewar flask on one of mine,
so I saw about the same thing some 10 years ago or so, but memory.
Didn't go all the way into the oscillator.
The oscillator picture is mirrored.
Cheers,
Magnus
On 12/12/2017 06:32 PM, Ed Palmer wrote:
It sounds like yours is different from my 8601. How old is yours? From
the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloquartz%208601%20Oscillator
If you click on 'view as story' you'll see some comments that I added to
the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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.
I got into the package out of the dewar of my FTS 1200-100 without breaking
it:
https://photos.google.com/share/AF1QipPxJF0Fn6_
gSjXQzk3OhoAhvgqizxmo4A41bIdyk8FrpkNIOfW5Q5feLwLsO4od8Q?key=
NmRRejU0eEYtVUQ4ZURTMnE4cXZEOWtIVmtQZTZB
-ch
73 de AI6KG
On Tue, Dec 12, 2017 at 3:50 PM, Magnus Danielson <
magnus@rubidium.dyndns.org> wrote:
Hi Ed,
Thanks for the pictures. I had to change the dewar flask on one of mine,
so I saw about the same thing some 10 years ago or so, but memory.
Didn't go all the way into the oscillator.
The oscillator picture is mirrored.
Cheers,
Magnus
On 12/12/2017 06:32 PM, Ed Palmer wrote:
It sounds like yours is different from my 8601. How old is yours? From
the label inside it looks like mine is from 1983.
Internal pictures are here:
http://s701.photobucket.com/user/edpalmer42/library/Oscilloq
uartz%208601%20Oscillator
If you click on 'view as story' you'll see some comments that I added to
the pictures.
Ed
On 2017-12-12 11:00 AM, ulf_r_k@yahoo.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/m
ailman/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/m
ailman/listinfo/time-nuts
and follow the instructions there.