[time-nuts] Time stamping with a PICPET

[Neville Michie]

I am going to use a Tbolt or an LPRO to source the 10MHz, the nanoseconds are not going to be important,
the noise or jitter on the proximity detector or photoelectric detector may swamp any 10MHz noise.
In the last few decades I am becoming increasingly computer illiterate, the machines and/or operating systems 
that I used to know are all in museums.
All I want is something that works.
I have some great ideas for a pendulum system that will work at atmospheric pressure on a bench top, 
eliminating the clock vault 50metres underground and the high vacuum system. However I will have to 
test and adjust each element of the system, so I need to log timestamps.
cheers, thanks for the input,
Neville Michie

On 26/10/2013, at 4:48 PM, Hal Murray wrote:

> 
> namichie at gmail.com said:
>> There used to be all sorts of Monitor programs for PCs but I can not see any
>> on recent machines. I want to log one second signals from a pendulum to
>> analyse its precision. The device looks ideal for this task. 
> 
> What are you going to use as a reference clock?
> 
> If you can convert your one-second ticks into a TTL signal and feed that to a 
> Linux box, the PPS stuff will allow you to log the data.  That uses your 
> local clock as the reference which is probably pretty close if you are 
> running ntpd.  (But since this is time-nuts, who says "pretty close" is good 
> enough?)
> 
> Here is a simple python script to log the data:
>  http://www.febo.com/pipermail/time-nuts/2011-September/058907.html
> It was targeted at 60 Hz but should work OK at 1 Hz.
> 
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
>