Quote:
Originally Posted by AndrewJ
Gday Allan
At least your signal looks better than ours did :-)
One thing tho, looking at their pdf, if you ignore the overshoots, the basic waveform is close to or just above 4V pk-pk
Yours is only about 3.0v.
I wonder if that is part of the problem???
( we only saw around 0.3V pk-pk, but agin, i have no idea what is generating the signal )
Also, what was yr timebase?
It looks like 0.1us but if so, is slightly different to what i measured
Andrew
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Hi Andrew,
Yes - their signal has a more negative going section.
It is different to what I measure.
I was very careful to make sure that my zero volt level was correct
on the display & that I was on DC coupled.
I also checked the calibration using the 1 MHz 2 Vpp facility at the front of the CRO.
From the QHY notes I am hoping that the negative part of the waveform is not important.
They only refer to a measurement from zero volts to 2.2 Volts.
They are dealing with the positive half of the waveform.
cheers
Allan