DSO5102P peak to peak

gf1 · Post time 2019-4-5 04:40:06

Edited by gf1 at 2019-4-5 04:50

I guess you don't mean 311V peak to peak, but 311V peak (-> 622V peak to peak or 220V RMS)?
That's out of range on this device with a 10:1 probe.
You need to use/buy a probe with a 100:1 attenuation.
Just setting the "Probe" setting on the scope to 100x does not turn your 10:1 probe into a 100:1 probe.

gf1 · Post time 2019-4-5 23:47:45

Edited by gf1 at 2019-4-6 00:10

With this setting you must tell the scope which proble attenuation (1:1, 10:1,100:1,...) you are actually using, because the scope does not know anything about the connected probe or the switch position on the probe. Then the scope adjusts the displayed voltage scale accordingly. If your probe is set to 10x, then you need to set this setting to 10x as well, in order that the voltage scale displayed on the scope is correct.

This scope model is limited to a maximum of 5V/div natively (1:1), and therefore 50V/div with a 10:1 probe. With a 100:1 probe, up to 500V/div were possible (but I guess you don't have a 100:1 probe).

gf1 · Post time 2019-4-7 01:31:27

Found for instance this one at eBay:
https://www.ebay.com/itm/Hantek- ... ry-ark/263266611690