[time-nuts] Why .30 cal holes can't be seen at 800 yds...

John Miles jmiles at pop.net
Wed Nov 3 18:40:20 UTC 2010


>    My first chore is to investigate what kind of pulse
>    rise-times I get from a selection of inexpensive
>    ultrasonic sensors when a supersonic bullet passes
>    within a couple of feet from them.  I have a Tek
>    2252 scope that I can place downrange to look at the
>    sensors with but storing the waveform for examination
>    may be a problem (no one seems to have volunteered to
>    stand downrange monitoring the scope screen!)
>    The Tek 2252 has a Centronix screen-capture printer
>    output but it is  an Epson FX format and I have no
>    idea if any current printers at the local Office Mart
>    are compatible with the Epson FX data format.  Anyone
>    on the TimeNuts list have any thoughts on this?

www.printcapture.com should be able to deal with the Epson format, I
believe.  They have a free trial version.

>    The 2252 scope also has a GPIB port but I don't know
>    if it outputs the printer data.  I have a Sparkfun
>    GPIB/USB dongle but that may not be of any use if
>    there is no printer data on the GPIB port.

It almost certainly will support dumping HPGL or Epson data to GPIB.

-- john, KE5FX





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