Products > Test Equipment
Zeeweii DSO1C81
tunk:
A short promotional video from Zeeweii: https://youtu.be/zUbpIGRi078
Aldo22:
Almost ridiculously cheap now on AE.
https://www.aliexpress.com/item/1005007394192248.html
Shipping, P6100 probe, battery,.. included.
Zeeweii produces reasonably mature devices for the lowest price segment.
IC_Toaster:
--- Quote from: tunk on November 01, 2024, 05:54:01 pm ---A short promotional video from Zeeweii: https://youtu.be/zUbpIGRi078
--- End quote ---
There is a cursor on FFT mode to see the frequency of the peaks. This makes the FFT mode more useful than the FFT mode of many other devices.
jeffs555:
Have always had a good bench scope, and never really felt the need for a handheld. However, saw this on cyber Monday sale for $33 with free shipping and couldn't resist. It arrived today and overall I am very pleased with it. I have fed it signals up to 100MHz from a tinySA and it syncs to all of them, but it does get a little jittery above 50MHz.
The main problem I see with the unit I received is that the compensation on the input divider seems to be way off. At 1MHz, going from 500mV/div to 200mV/div to 100mV/div the display scales correctly. However at higher input frequencies, the scaling gets worse and worse. With 75MHz signal, going from 200mV/div to 100mV/div, the displayed waveform actually shrinks. Don't know if I will try to get it replaced or try to fix it. From the internal photos posted, appears to be a trim cap for internal compensation, so will probably try adjusting that first.
jeffs555:
I have done some more testing, and the bandwidth problem I am seeing is only on the most sensitive vertical setting.With a 10x probe at 200mV/div or above, everything is fine and bandwidth seems to be at least 100MHz. However, on mine with a 10x probe at 100mV/div the bandwidth is crap. A 30MHz sine wave shows only half of its actual value, and a 60MHz sine is around 1/3 of its actual value.
Hopefully, someone else has one and can let me know if this is just the way DSO1C81s work or if it is a build problem with my unit.
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