Quote:
Originally posted by LarryBible
The Sears meter is indeed a high input impedance meter. It is PLENTY accurate for this job. When drawing a code, you would know the code even with a 5% error. This meter is way better than that. When setting the 50% duty cycle during closed loop operation the signal bounces all over the place anyway.
I know the hesitance to believe such a meter. How can you possibly get a decent meter for $30. I've been around electronic test equipment for about 37 years. To get a meter like this in years past would have been several thousand dollars. With microelectronics this kind of functionality and quality is possible.
There are indeed some measurements of duty cycle that would best be done with a scope, but this isn't one of them. Even with a scope you don't have the resolution for such a measurement as you do with a digital meter. One cycle would be several inches wide on the scope, measuring against a scale on the scope face. 1% accuracy would be about the best you could count on.
Don't knock the meter until you've tried it.
Good luck,
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OK, I'll get one. Do you have the Sears model number by chance?
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Regards
Warren
Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor
Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL
ENTER > = (HP RPN)
Not part of the in-crowd since 1952.
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