DPO3012 Digital Phosphor Oscilloscope with sample Rate of 1 GS/s DPO3014 Digital Phosphor Oscilloscope with Sample Rate of 1 GS s DPO3032 Digital Phosphor Oscilloscope with Sample Rate of 1 GS/s DPO3034 Digital Phosphor Oscilloscope with Sample Rate of 2.5 GS/s DPO3052 Digital Phosphor Oscilloscope with 700 ps calculated rise time DPO3054 Digital Phosphor Oscilloscope with 2.5 GS/s sample rate