Products > Test Equipment
New 2ch pocket DSO+SG - Zeeweii DSO2512G
tunk:
--- Quote from: Aldo22 on April 27, 2024, 09:13:17 am ---FY3224s has quite good precision (frequency response) up to 10MHz / 10V, but is not very accurate, i.e. the multimeter shows slightly different values in certain voltage ranges from what is set on the FY3224s.
--- End quote ---
It may be caused by the multimeter - multimeters also have a frequency range.
Aldo22:
--- Quote from: tunk on April 27, 2024, 12:50:53 pm ---It may be caused by the multimeter - multimeters also have a frequency range.
--- End quote ---
Absolutely, that's why I only compared the different voltage ranges at 1kHz and DC.
At 1kHz, the multimeter is quite accurate.
Then you can increase the frequency and look at the frequency response ("hobby accuracy" of course...)
Sham73:
--- Quote from: Aldo22 on April 27, 2024, 09:13:17 am ---That's OK, just don't overdo the calibration, it won't be like a multimeter.
--- End quote ---
For calibration, I need a more or less accurate laboratory power supply and a functional signal generator, which I don’t have.
Aldo22:
--- Quote from: Sham73 on April 27, 2024, 03:55:35 pm ---For calibration, I need a more or less accurate laboratory power supply and a functional signal generator, which I don’t have.
--- End quote ---
It's not really necessary.
You have "Auto cal" in the Aux menu.
chemary:
--- Quote from: Sham73 on April 27, 2024, 03:55:35 pm ---
--- Quote from: Aldo22 on April 27, 2024, 09:13:17 am ---That's OK, just don't overdo the calibration, it won't be like a multimeter.
--- End quote ---
For calibration, I need a more or less accurate laboratory power supply and a functional signal generator, which I don’t have.
--- End quote ---
If you don't want to spend much, I purchased a cheap device like this one https://www.aliexpress.com/item/1005006786894152.html it comes with a hand written paper with the real measured values with good equipment and also states the date and temperature when they were done, it can be used to know how good are the measures of your equipment.
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