Da "tim...@timeok.it" tim...@timeok.it
A att...@kinali.ch
Cc
Data Tue, 12 Jun 2018 07:22:26 +0200
Oggetto Re: [time-nuts] Raw phase data of super-5065
Ciao Attila,
here the .gif file.
Luciano
Da "Attila Kinali" att...@kinali.ch
A tim...@timeok.it,"Discussion
I posted about my G-shock watch on this forum probably about 10 years ago.
Go look them up. I found mine superbly accurate and being in Tasmania I
cannot connect to any LF service. After a while it started to get a little
worse and I found you can take the back off and calibrate it.
My
I should have mentioned that my Casio (module 3405) is a G-Shock "diving
watch" with a 20-bar
(~200m depth) rating. In so far as possible, I never take it off my wrist
(TSA check points being the
occasional exception), and don't want any leak problems even though I never
dive.
I once bought a
On 06/11/2018 09:52 AM, Attila Kinali wrote:
> On Sat, 9 Jun 2018 23:28:29 +0800
> mimitech mimitech wrote:
>
>> Just do a little bit research on 1560nm telecom laser transceiver. The
>> closest wavelength is 1560.61nm (DWDM channel 21) as defined by ITU.
>> Usually telecom laser transceiver
Attila Kinali writes:
> Unfortunately, I have no application that can read XPS files available.
> Can you send it as something more standard?
Okular opens the file without problems. MuPDF should do the same, but I
can't test it at the moment.
Regards,
Achim.
--
+<[Q+ Matrix-12 WAVE#46+305
Hi Attila,
I think your information is very interesting. I didn't realize which type
of common LDs can do GHz level modulation (anyway I didn’t have much
knowledge on laser diode before). It would be great If you could recommend
several good Laser diodes (which vendor/part number) with possible
I think you guys won the luck of the draw. I have had a Casio
WV200DA-1AV Wave Ceptor for a while, module 3140. Nice watch, but it
gains about 1/2 sec per day when not synchronized. I recently got a
Casio GW-M5610 G-Shock, module 3153. I have not run it unsychronized,
so have not checked
For experimental use you are probably better advised to use a dye laser or a
Fabry-Perot laser as both are available on the surplus market and both are
‘tunable’ and leave the VCSEL till you have a functioning prototype
On Jun 11, 2018, at 4:29 AM, Dana Whitlow wrote:
I should have written
Joe,
"What is mounted on top of the 10811?"
That is a Clifton Labs Z1 buffer amp.
Still made but by another company.
Mounted on a small right angle bracket that is mounted using the existing
screws on the back of the 10811 adaptor assy.
It's input is connected to the 10Mhz out pins of
I should have written more clearly- the adhesive in question was *not* in
the optical path.
As is usual, variations are possible, one supposedly being that the crystal
that lases
at 1064 nm is also doped with something to make it nonlinear (so I've
read). I kind of
have my doubts over this,
The better ones use optically contacted crystals to avoid browning of the
adhesive due to the high power densities of the 1064nm laser required for
efficient frequency doubling.
Brue
> On 11 June 2018 at 22:52 Dana Whitlow wrote:
>
>
> Mark's description about how (most) green laser pointers
Mark's description about how (most) green laser pointers work is a bit in
error, and is perhaps
over-simplified- the reality is actually more fascinating yet:
First a diode laser operating at around 808 or 809 nm is used to optically
pump a solid
state laser which generates light at 1064 nm.
I bought a Casio 'atomic watch" about 3 months ago, one which uses the
'3405' module.
I've also been running checks with radio setting turned off, and mine is
coming in at
just under 1 sec per month, based on seeing how long it takes to drift one
second.
But I find that visual/aural coordination
Ciao Luciano,
On Fri, 8 Jun 2018 14:05:24 +0200
"tim...@timeok.it" wrote:
>Here a ten days simultaneously run of the A and B version compared with my
> HP Z3816A GPSDO.
Thanks a lot!
Unfortunately, I have no application that can read XPS files available.
Can you send it as something
On Sat, 9 Jun 2018 16:54:15 +0800
mimitech mimitech wrote:
> I prefer the 780/795nm VCSEL scheme for its simplicity. After some
> searching, looks like the 780nm VCSELs are also not easy to source,
> although other types of 780nm LD are common.
Why are you focusing on VCSEL anyways? Standard
Hi!
There seems to be some kind of comeback going on with 80's style digital
watches. You may find replicas of some 80's models or even re-makes of
the original models from original manufacturer.
So I decided to get one. As a time-nut my primary goal was to have radio
controlled 'atomic'
PPLN (Periodically poled lithium Niobate) is the frequency doubler of choice
for such applications however it needs to operated in a temperature regulated
oven.
To achieve efficient frequency doubling the input light needs to remain in sync
with the frequency doubled output light as they
On Sat, 9 Jun 2018 23:28:29 +0800
mimitech mimitech wrote:
> Just do a little bit research on 1560nm telecom laser transceiver. The
> closest wavelength is 1560.61nm (DWDM channel 21) as defined by ITU.
> Usually telecom laser transceiver module uses DFB (distributed feedback)
> type laser diode
The output wavelength of a VCSEL is current and temperature dependent so using
a low noise current source and regulating the chip temperature is usually
necessary to allow locking to an atomic transition.
Most VCSELS for such applications include a peltier module within the housing.
Bruce
> On
Well, no. Green laser pointers convert a rather high power 800 nm laser to
1600 nm in one crystal then divide it to 533 nm in another one. The physics
and manufacturing of them is best described as black magic. They are cheap
because China developed the process to grow the crystals in bulk
On Mon, 11 Jun 2018 06:53:49 +0200
Magnus Danielson wrote:
> One might then ask what the availability and pricetag is for nonlinear
> chrystal needed for frequency doubling.
It cannot be too much, given the fact that these are used in
green laser pointers.
Though, I have to say I am astonished
Hi Nigel,
It will also be the first info on the 607B that I have ever seen I will
certainly download it when I get home (work filtering forbids it, with much
else). Should allow me to fish my one out of the attic and actually use it
- after letting the magic smoke out of the tants, of
22 matches
Mail list logo
