Gw instek gds 2 channel4 channel digital storage oscilloscopes gw instek gds 2072a this gds 2072a 2 channel digital storage oscilloscope 70mhz from gw instek has been designed with a host of excellent features making it one of the most high speed efficient scopes on the market included within this superb piece of kit is a 2gsas maximum real time sampling rate and 100gsas fast equivalent time sampling rate plus an 8 inch 800 x 600 high resolution tft lcd display 1mvdiv to 10vdiv vert