Tektronix MSO2014 - Changing the Acquisition Mode, Record Length, and Delay Time

Getting Acquainted with the Oscilloscope
16. F or analog channels, the waveform
baseline indicator shows the zero-volt
level of a waveform (ignoring the effect of
offset). The ico n colors correspond to the
waveform colors.
70 DPO2000 and MSO2000 Series Oscilloscopes User Manual