Back years ago I was a dealer for Aoyue rework stations,
so I use one of those. They are all knockoff's of Hakko
stations, and frankly any that has a servo'd heat source
would do nicely. What I sold had a digital temperature
control, and a flow meter to show how fast the air was
flowing kind
On Tue, Jan 26, 2016 at 06:57:54AM +, Mark Sims wrote:
> Actually not hard to do... lay out circuit board (free version
> of Eagle), have boards fab'd at Oshpark.com or your favorite
> Chinese proto shop (I like gojgo.com). Have solder paste
> stencil made at oshstencils.com. Squeege solder pas
. Cash Olsen KD5SSJ
ARRL Technical Specialist
Message: 15
Date: Tue, 26 Jan 2016 01:50:47 -0500
From: Chuck Harris
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] low noise multiplication to 100 MHz
Message-ID: <56a71747.8040...@erols.com>
Conten
irons at each end of the resistor . If they are small enough
you can add a glob of solder to the whole resistor, so both ends will melt.
Cheers
-=Bryan=-
> To: time-nuts@febo.com
> From: cfhar...@erols.com
> Date: Tue, 26 Jan 2016 01:50:47 -0500
> Subject: Re: [time-nuts] low noise mu
Jim,
3) Input and output level (?)
the oscillator is a HCMOS output, so figure swinging about 3.5V
Any multiplier configuration will produce lots of different harmonics, and will
need fairly serious filtering after it if you want a clean 100MHz.
If you have a 20MHz oscillator with CMOS
One last post on this off topic subject: Eyes.
The younger folk will think eye problems amount to near
or farsightedness... maybe a little astigmatism. The
slightly older folk (37+) will know about presbyopia...
the loss of your close working focus... your arms get
shorter.
Then there are the 6
Chuck
Thank you for your advice, I will print it out and when needed experiment.
We use SMD.s and two of our tem members are very good at it, I do limited
stuff and have some tools but also a macular hole in one eye. In designs I
try to stay with solder able SMD's and we have projects like th
Hi
> On Jan 25, 2016, at 8:36 PM, Gerhard Hoffmann wrote:
>
> Am 25.01.2016 um 18:20 schrieb Graham / KE9H:
>> There are clock distribution parts designed to do this low noise frequency
>> conversion and distribution.
>>
>> Consider TI LMK04100
>>
>>
>> 150 fs class jitter.
>>
> But o
Hi Bert,
I have noticed that if I have the right magnification,
I can do amazing things. Even the tiny age related
tremors that naturally occur in my hands reduce with
magnification. The brain is a marvelous servo mechanism.
Get a good 40x-80x zoom stereo microscope meant for
dissection, the
Actually not hard to do... lay out circuit board (free version of Eagle),
have boards fab'd at Oshpark.com or your favorite Chinese proto shop (I like
gojgo.com). Have solder paste stencil made at oshstencils.com. Squeege
solder paste down with a credit card. Place components by hand. Ref
We have looked at the LMK devices but with my 74 years would not try to
solder it. There are other neat parts out there but again who is able to
solder them.
Bert Kehren
In a message dated 1/25/2016 8:11:14 P.M. Eastern Standard Time,
b...@hsmicrowave.com writes:
Aaah - but then you nee
Am 25.01.2016 um 18:20 schrieb Graham / KE9H:
There are clock distribution parts designed to do this low noise frequency
conversion and distribution.
Consider TI LMK04100
150 fs class jitter.
But only if you integrate the noise only from 12 kHz offset to 20 MHz.
It is a telecom spec.
r
b...@hsmicrowave.com said:
> Aaah - but then you need a microprocessor (and its noise if you're not
> careful) to control it. IMHO - too complicated an approach.
Yes, but you don't need many smarts to send a few bits to configure a PLL
chip.
You can get low end microprocessors in 8 pin packages
Aaah - but then you need a microprocessor (and its noise if you're not
careful) to control it. IMHO - too complicated an approach. Hard to beat
a "careful" straight multiplier approach for simple or a phased locked
100 MHz VCXO for the best phase noise.
Bill - N6GHz
On 1/25/2016 9:20 AM, Grah
There are clock distribution parts designed to do this low noise frequency
conversion and distribution.
Consider TI LMK04100
Ignore PLL1
Put your 10 MHz as the reference input to PLL2.
Set Internal VCO to ~1200 MHz
Set the internal dividers to get 100 MHz out, and 10 MHz back to the PLL2
phase d
If not good enough an XOR with filter and one of the Crystek VCXO's
previously mentioned may do it.
Bert Kehren
In a message dated 1/25/2016 10:01:33 A.M. Eastern Standard Time,
mag...@rubidium.dyndns.org writes:
Also, it will be systematic, with idle tones. Because of the delay
elements
Also, it will be systematic, with idle tones. Because of the delay
elements used, they will not be long-term static but move around.
I agree, this is quite noisy. If the noise is tolerable, it is indeed a
small solution. 100 ps 1-sigma for 5 MHz in 100 MHz out isn't what I
would consider low.
Unfortunately the ICS570 (like all zero delay buffers) has an output jitter
approaching about 1000 times the likely RF ADC internal sampling jitter. The
resultant SNR degradation may be a little excessive for this application..
Bruce
On Monday, 25 January 2016 11:00 AM, Bert Kehren via ti
With all the discussions in a small 100 MHz source I asked my project
partner Juerg in Switzerland to run some data on the ICS 570 that we use on the
majority of our projects with excellent results. Using the HP53132A we see
+ - 1 count at E10-11 ignore the large jumps those come from the Tb
Do any of the SiLabs 'low jitter' synthesiser / clock generators / jitter
attenuators etc help?
Alan
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Moin Ulrich,
On Fri, 22 Jan 2016 10:00:58 -0800
"Tom Van Baak" wrote:
> The attached plot is from Dr. Ulrich Rohde (ka2...@aol.com)
> "a PDF of a noise plot , AM FM noise, important technical data"
> (he had trouble posting it to the list, so I'm doing it for him)
>
> R_S_SMA_SIG_GEN_100MHz-02.
Am 22.01.2016 um 22:40 schrieb jimlux:
the oscillator is a HCMOS output, so figure swinging about 3.5V
Output.. I'm feeding differential clock inputs on ADCs. I'll bet a
+/- 300mV swing would work.
4)Title said "Low Noise" needs better definition as to what kind of
noise and how far down. A
On 1/22/16 12:43 PM, Artek Manuals wrote:
OK ...coming back to the original post and see if we can nail down ALL
the design requirements
well, I wasn't really thinking in terms of formal design requirements..
(I get more than enough of that at work)
I was more looking for potential circuit
On 1/22/2016 12:20 PM, jimlux wrote:
On 1/22/16 2:15 AM, REEVES Paul wrote:
Why not use something like an HP5254B/C ? They give out 50MHz
harmonics up to the low Ghz region, all filtered by a nice high-Q
tuneable cavity. All to typical HP build quality.
Of course, they have an amount of 'not n
Thank you , important new information
Sent from my iPhone
> On Jan 22, 2016, at 1:00 PM, "Tom Van Baak" wrote:
>
> The attached plot is from Dr. Ulrich Rohde (ka2...@aol.com)
> "a PDF of a noise plot , AM FM noise, important technical data"
> (he had trouble posting it to the list, so I'm doing
time-nuts-boun...@febo.com] On Behalf Of Peter Reilley
> Sent: 21 January 2016 15:17
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] low noise multiplication to 100 MHz
>
> Have you considered synthesizers? I am using an Analog Devices AD9517
> to drive a A/D
> converter
On 1/22/16 2:15 AM, REEVES Paul wrote:
Why not use something like an HP5254B/C ? They give out 50MHz harmonics up to
the low Ghz region, all filtered by a nice high-Q tuneable cavity. All to
typical HP build quality.
Of course, they have an amount of 'not needed' circuitry and are just a bit
ean output from 10MHz in though.
Paul G8GJA
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Peter Reilley
Sent: 21 January 2016 15:17
To: time-nuts@febo.com
Subject: Re: [time-nuts] low noise multiplication to 100 MHz
Have you considered synthes
Am 21.01.2016 um 15:43 schrieb jimlux:
My tiny 100 MHz low noise OCXOs are unexpectedly delayed at the mfr,
and I'm looking at alternative schemes.
One is to get 10 or 20 MHz OCXOs (typically in stock) and multiply
them up. I've got the Wenzel ap notes on 2diode and using HCMOS (and
I've used t
On 1/21/16 9:26 AM, Richard (Rick) Karlquist wrote:
It is interesting that the HP8662A multiplies 10 MHz to 640 MHz,
in steps of 2X. But there is a crystal filter at 80 MHz to
clean up the wideband noise of the 10811. In the 11729, they
filter the 640 MHz from the 8662 with a SAW filter, again
On 1/21/16 7:17 AM, Peter Reilley wrote:
Have you considered synthesizers? I am using an Analog Devices AD9517
to drive a A/D
converter at 250 MHz. It has many clock outputs that are independently
configurable.
It is intended for low jitter applications.
So you run the PLL VCO at 1 GHz or
It is interesting that the HP8662A multiplies 10 MHz to 640 MHz,
in steps of 2X. But there is a crystal filter at 80 MHz to
clean up the wideband noise of the 10811. In the 11729, they
filter the 640 MHz from the 8662 with a SAW filter, again to
eliminate multiplied up wideband noise. It's goin
Have you considered synthesizers? I am using an Analog Devices AD9517
to drive a A/D
converter at 250 MHz. It has many clock outputs that are independently
configurable.
It is intended for low jitter applications.
Pete.
On 1/21/2016 9:43 AM, jimlux wrote:
My tiny 100 MHz low noise OCXOs ar
My tiny 100 MHz low noise OCXOs are unexpectedly delayed at the mfr, and
I'm looking at alternative schemes.
One is to get 10 or 20 MHz OCXOs (typically in stock) and multiply them
up. I've got the Wenzel ap notes on 2diode and using HCMOS (and I've
used the packaged Wenzel multipliers), and I t
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