Just got a new Siglent 1102CML and I was tinkering around with it. Then I hooked up the 1Khz output that is on the scope to channel 1 and got the output as shown in the PIC1 attached below.I decreased the Volts/div to 500mV and i got the waveform as shown in the PIC2. Then I further decreased the Volts/div to 200mV and the waveform shifted below 0 reference by about 400mV and that you can see in the PIC3
... after this I tried to move the waveform up using the position knob and to my surprise I cannot move it, though I can see the position of zero reference changing, u can see this happening in PIC4, also the wave keeps on getting more slanted at the bottom. I can't understand why.
When I changed the Volts/div to 10V, I am getting 4V peak to peak as seen in PIC5 as compared to 3.16V in PIC1, 2.52V in PIC2, and 1.32V in PIC3
I have DC coupling set on channel 1 at 1X. Probe I am using came with the oscilloscope. I have already compensated the probes properly.
Is there something wrong with oscilloscope?? Help me to figure it out guys.