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How to control vertical range of Spectral Mode?

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How to control vertical range of Spectral Mode?

Postby talktronics » Sat Jun 28, 2014 3:14 am

I've been using 5244B for performance measurements of an amplifier used for position controller. Looking at the noise levels, in Spectral Mode, there are situations where the baseline of the spectral plot (x-axis) is chopped off. There does not seem to be a way to set the vertical axis range from min to max in order to see the baseline. Possibly this is a resolution problem, maybe the signal falls below the noise floor of instrument. But the behaviour seems inconsistent. See attached print that shows what I mean. Is there a way to control the vertical range displayed in spectral mode?
Attachments
PicoScope 5244B spectral display anomaly 6-27-14.pdf
screen shot showing bottom chopped off
(94.59 KiB) Downloaded 54 times
talktronics
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Re: How to control vertical range of Spectral Mode?

Postby alan » Sun Jun 29, 2014 6:22 am

As its just off the screen try dragging up the left hand axis with the mouse to reveal more. Another option is to click on the x1 icon at the bottom left, from this you can set a zoom of say 0.9 to reveal more.

If that does not work, let us know and we will find another solution.
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