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Spectrum mode properties...

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Spectrum mode properties...

Postby joecar » Mon May 05, 2008 8:43 pm

Hi,

I just bought a Pico Quad automotive kit which I use for automotive DIY and electronics hobby...

I noticed that when displaying the spectrum mode properties that the text fields all run togther (see attachment)...

this seems to happen if my laptop display resolution is set higher than 1280x1024...
but my laptop display looks very poor at 1280x1024 so I am forced to use a higher resolution;

I just just thought you would want to know about this.

Also, it would be nice to have the option of showing the horizontal (frequency) scale in log; and the vertical scale in log (as in plain log, not dB).

Thanks, I am enjoying your product quite a bit,
Joe
Attachments
Pico 6.0.13.3.png
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joecar
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Specrum mode amplitude...

Postby joecar » Mon May 05, 2008 8:50 pm

If scope mode shows a 1V peak (i.e. 2V peak-peak) 1 kHz Sine wave, shouldn't spectrum mode show a spike at 1kHz with amplitude of 1V...?

See pics.

Also, for a 2V peak-peak square wave (centred at 0V), shouldn't the first frequency component have amplitude 1.27V (i.e. 4/pi from Fourier analysis)...?

Am I doing something wrong...?

Thanks,
Joe
:)
Attachments
Spectrum 1kHz Sine 1V peak.png
(72.43 KiB) Downloaded 224 times
Scope 1kHz Sine 1V peak.png
(83.66 KiB) Downloaded 224 times
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Ok, I figured out the answer to post #1...

Postby joecar » Fri May 09, 2008 4:34 pm

I can get the spectrum mode properties to display correctly by selecting normal sized fonts under desktop->properties->settings->advanced on WinXP, and instead using large fonts under desktop->properties->appearance while keeping display resolution at 1400x1050.
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