Hi there xx,
A 2 channel scope with 2ns per division and ext trigger input would already
give you very precise performance data of all three sources against each other..
That's the low-cost solution. On the high end look to buy a Symmetricom
Tsc-5115a analyzer.
Bye Said
Sent from my iPad
Bob,
Thank you for the video
Now all we need is a robot and software to filter the jitter from my hands.
Maybe a little less expensive than the da Vinci robot.
http://www.davincisurgery.com/
Stanley
- Original Message
From: Bob Bownes bow...@gmail.com
To: Discussion of precise time
Forgot to mention:
With the below two instruments you can adjust two of your Rb's so that all have
the same frequency by adjusting them so that there is no phase drift over long
time periods.
You will need to discipline one or more of them to gps to know if this
frequency is actually accurate
Hey Rob!
Yeah, there was a LPRO Rb option on that board and you are
remembering correctly. The main thing was a dc-dc converter to get the
right voltage (24vdc?). Then, I believe we just selected the external
clock and cranked the filter constant up to 1000 and I think that's it.
I can't
I think the Rb version went in a taller case? As for the reboot,
probably depends on where you are probing :-)
My proto unit from 1996 is still happily ticking along on my bench in
the lab with an MTI oven that still has tuning range.
-Original Message-
From: time-nuts-boun...@febo.com
Stanley,
Your brain will do an excellent job of translating your finger
motion to the micro motions necessary to move surface mount parts
around with tweezers. Barring disease, the usual solution to finger
jitter is to keep tweezers pressure light, and lay off the coffee.
Even if you do jitter
Hello, and welcome to the group, and what I find an endlessly
fascinating subject.
Said's suggestion of using a 'scope is fine, but is mind-numbingly
tedious (I've done it!) I think you need a frequency counter/timer
whose readings can be output to a computer for subsequent analysis.
There are
On 20 July 2010 18:51, Chuck Harris cfhar...@erols.com wrote:
...I use the little finger on my tweezers hand
as a balance point for my hand. Just the act of having it touch the
stage, or board removes all of the jitter.
If only our 1PPS signals had a little finger that could rest somewhere
You'll probably also find that your fine motor control improves a bunch when
you can actually *see* what you are doing in 3D. I got a stereo microscope
a year or two ago, and I'm amazed at how finely I can control the tip of a
pair of tweezers or a knife point or soldering iron under the
Hi Everyone,
I am looking for a Systron-Donner 1618 or 1618B microwave synthesizer Service
Manual. Please contact me direct if you can help.
Thanks
Bert, VE2ZAZ
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It's amazing what one can do by hand.
In the 1970s I worked in an electrophysiology lab where we put glass
microelectrodes into rat neurons. The microelectrodes were made in the
lab by heating 1 mm diameter glass tubing to an orange heat and pulling
abruptly. (This was done in a simple
Paypal to stanley_reyno...@yahoo.com . Yes I still have extra boards.
Stanley
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Picture of board here:
www.n4iqt.com/stanley_reynolds/picticii/Picticboard001.JPG
- Original Message
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: time-nuts@febo.com
Sent: Tue, July 20, 2010 5:08:22 PM
Subject: [time-nuts] Pictic II boards are here !
Paypal to
Corrected link to picture:
www.n4iqt.com/picticii/Picticboard001.JPG
- Original Message
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Tue, July 20, 2010 5:26:44 PM
Subject: Re: [time-nuts] Pictic
Cool board, Stanley. The PIC chips are in on my end and the plastic
protective tubes I ordered came in today. I got these for mailing them out
to the various folks that wanted a chip.
Guys, I'm going to try to get them out this week. As I mentioned before,
I'm leaving for Arizona this coming
On 21/07/10 02:41, Greg Dowd wrote:
Hey Rob!
Yeah, there was a LPRO Rb option on that board and you are
remembering correctly. The main thing was a dc-dc converter to get the
right voltage (24vdc?). Then, I believe we just selected the external
So some more probing with a meter this
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