Author Topic: Difference between channels in vertical measurement MSO5074  (Read 257 times)

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Online Magnum

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Hi,
received a MSO5074 today. A stupid question: Feeding a 4Vpp Square Wave to all channels (one after the other), the DVM reads between 2.00 and 2.04 V RMS. Also visible on the waves. I know that DSOs are not very accurate in vertical measurements, but I did not expect differences between the channels. Is that normal or a calibration problem? I have firmware 00.01.04.04 which seems to have problems with autocal.
 

Online Magnum

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Re: Difference between channels in vertical measurement MSO5074
« Reply #1 on: June 01, 2019, 06:43:18 am »
Just found out it seems to be normal. When resizing the wave form a bit (with fine controls) it goes up and down on all channels about 0.03V. But still within the stated 3% accuracy.
 

Offline thm_w

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Re: Difference between channels in vertical measurement MSO5074
« Reply #2 on: June 01, 2019, 09:21:48 am »
Yeah thats fine as you said.
4Vpp would likely imply a 1V/div setting on the vertical scale or more (8*1V visible on the screen, 10V total). 3% of 10V is 300mV.

You can try running calibration if you like, see if it makes any difference.
 


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