[time-nuts] Time stamping with a PICPET

[Tom Van Baak]

Hi Neville,

See www.leapsecond.com/pic/ for info on my picPET chips.

Yes, I use them direct into a native serial port, or through serial/USB adapter. Either is fine.

Any sort of "terminal" program works to read or log the ascii data. I have my own tools as well; send me email off-line for details.

You can also use John's TimeLab; use Acquire->Acquire from counter in Talk-Only mode, and select Timestamp (wrap100 secs). That way you get phase, frequency, and ADEV plots in real-time.

With a 10 MHz clock, the pulse resolution is 400 ns; more than enough for pendulum clock measurements. I use a picPET with my Synchronome.

/tvb

----- Original Message ----- 
From: "Neville Michie" <namichie at gmail.com>
To: <time-nuts at febo.com>
Cc: "Neville Michie" <namichie at gmail.com>
Sent: Friday, October 25, 2013 9:46 PM
Subject: [time-nuts] Time stamping with a PICPET


> Hi,
> I have some PICPETs made by TVB.
> They take a 10MHz clock, and on receiving a pulse trigger, they send out a 19200 Baud
> RS232 time stamp word.
> My query is can they be fed straight into a serial port? 
> What about logic levels?
> Would a serial/USB converter get them into a laptop?
> What applications are available to receive the data and make an ASCII file that can be read by a spreadsheet
> or other data reduction program.
> 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.
> thanks,
> Neville Michie