I am a brand new oscilloscope user with a Siglent SDS1104X-E. There's a lot I have to learn about this device, but I thought some things would be simple, but apparently I am more clueless than I anticipated. I press Default to reset the scope to factory settings, then attach the GND of probe 1 to the negative terminal of a 4.1V battery (multimeter verifies the voltage), and make sure I would see the graph of the line (2V/div). I select triggering mode Single (after which the 0V horizontal graph line disappears), then touch the probe to the positive end of the battery. I am expecting to see a 4.1V flat line appear and may or may not perceive that the graph is not updating any further. However, nothing at all happens. The default settings for triggering look right (rising edge, DC coupled, tried trigger voltages around 40-120 mV, etc.) Anyone familiar with this line of scopes? Any idea what the problem might be?