<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Jimmy, it's 60 cycles per second. Im sure you will know the rest<BR>
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Matt<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Tachometer </B><BR>
Date:10/24/2003 8:16:48 PM Eastern Daylight Time<BR>
From:<A HREF="mailto:jivey61@msn.com">jivey61@msn.com</A><BR>
Reply-to:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
To:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
<I>Sent from the Internet </I><BR>
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Ok time for another thread.<BR>
I just put batteries in my tachometer and I want to calibrate it. If I set <BR>
it to sense a 2 blade prop and hold it to the flourescent light bulb in the <BR>
kitchen, what should it read. There are 120 pulses of light on 60 cycles. <BR>
Why does it read 36. If I select a 3 blade prop it reads 23. WHY. What <BR>
should I set it to read looking at this light?<BR>
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Jim Ivey<BR>
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