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martinloren / HScope

HScope material repository
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Reading appears as jagged when using probe at x10 - VDS 1022 #47

Closed 0xNoor closed 1 year ago

0xNoor commented 1 year ago

I am using OWON VDS1022 and realme 8 together to use HScope. On using the probe at x10, the results are apearing to be very jagged. I tired confirming if this is a hardware or software problem, and confirmed that this is surely a problem with Hscope.

At x1 probe florentbr/OWON-VDS1022 software - 440hz Triagular wave

400h x1

At x10 probe florentbr/OWON-VDS1022 software - 440hz Triagular wave

440h x10

Hscope x1 probe - 440hz Triagular wave

Screenshot_2023_04_30_11_13_41_50_c1372b538608098fbfbcfcbe4effee56

Hscope X10 probe - 440hz Triagular wave

Screenshot_2023_04_30_11_14_22_68_c1372b538608098fbfbcfcbe4effee56

Hscope x10 probe - 1Khz sine wave

Sine waves are looking pretty awful at x10 probe

Screenshot_2023_04_30_11_14_59_93_c1372b538608098fbfbcfcbe4effee56(2)

0xNoor commented 1 year ago

After reinstalling the app, and not using auto fixed the issue. The main cause of the issue is the voltage/division. As you can see by using probe at x10, the V/div is ±24 V and the ADC resolution is 8bit of OWON VDS1022 which means the scope would measure every interval of 187.5 mV at ±24 V . Since my Vpp is around 970mV in sine wave, so I got around ~4 readings.