Tektronix digital phosphor oscilloscope tds3000c series tektronix tds3012c the tektronix tds3012c is a 2 channel digital phosphor 100mhz oscilloscope that offers fast waveform capture rates on a continuous basis saving you time by quickly revealing the nature of faults so advanced triggers can be applied to isolate them real time intensity grading highlights the details about the history of a signals activity making it easier to understand the characteristics of the waveforms youve cap