[time-nuts] Slightly off-topic: How to take measurements at fixed intervals in Perl
didier at cox.net
Sat Feb 23 20:24:34 EST 2008
Simple and sweet, thanks John!
> -----Original Message-----
> From: time-nuts-bounces at febo.com
> [mailto:time-nuts-bounces at febo.com] On Behalf Of John Ackermann N8UR
> Sent: Saturday, February 23, 2008 5:53 PM
> To: Discussion of precise time and frequency measurement
> Subject: [time-nuts] Slightly off-topic: How to take
> measurements at fixed intervals in Perl
> I've struggled for a while to figure out how to take readings
> at fixed intervals from my counters and other GPIB gear. The
> problem is that the time it requires to trigger and receive a
> measurement is non-zero and can vary from measurement to
> measurement. Trying to calibrate a proper delay is an
> exercise in frustration, and any errors mount over long experiments.
> I searched the web and found bits indicating that a fixed
> timer could be done using an "alarm" signal, but no single
> place provided a useful (to me, anyway) example, and all the
> info I found seemed aimed at different applications.
> I finally figured it out, and the details are at
> http://www.febo.com/pages/perl-alarm-code/index.html if this
> might be of interest to any of you.
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