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From: Chris Carlen
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020826
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Subject: Re: easy fast rise time pulse generator?
References: <email@example.com> <3DA8629B.5B625B62@webaccess.net>
Date: Sun, 13 Oct 2002 20:20:35 GMT
NNTP-Posting-Date: Sun, 13 Oct 2002 13:20:35 PDT
Chuck Simmons wrote:
> Larry Gagnon wrote:
>>I require a fast rise time pulse generator to calibrate the vertical
>>amplifier pulse response of my HP1722B oscilloscope. Obviously the
>>pulse marks do not need to be of high frequency train because the
>>scope is calibrated for this at a time/div of only 10 microseconds.
>>Could anyone suggest a simple circuit that would give me a fast rise
>>pulse? Any help greatly appreciated.
> The old tried and true method of a reed relay driving a properly
> terminated transmission line from a voltage source can hardly be beat.
> Some of the old Tektronics calibrators for delay line adjustment and
> rise time measurement used this method. Mercury wetted contact reeds
> work best because they don't bounce.
Wow, I never would have thought it. I hope I can try this someday.
Christopher R. Carlen
Suse 7.3 Linux 2.4.10
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