[time-nuts] Very slow freq. counter / event counter

Tom Van Baak tvb at LeapSecond.com
Fri Apr 18 18:32:28 EDT 2014


> PCs can do that without the chip.  Connect the pulse to the DCD
> line of an RS232 port and it will get logged with a uSec timestamp.
> It works for any frequency from maybe 1kHz to 0Hz.

Yes, this works because the OP only needed 1/100th second resolution.
For (windows) PC-based frequency or event counting or timestamping see:

PC Time Stamping Counter using serial port
http://leapsecond.com/tools/pctsc.c
http://leapsecond.com/tools/pctsc.exe

PC Frequency Counter using serial port
http://leapsecond.com/tools/pcfc.c
http://leapsecond.com/tools/pcfc.exe

/tvb




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