... " display high brightness oscilloscope tube L-212 20MHz Dual channels Analog oscilloscope Dual channels/dual traces, X-Y mode 6" display, high brightness ... :*10 Accuracy: ±3% Triggering System: Triggering mode: NORM, AUTO, TV-V, TV-H Triggering sourde: CH1, CH2, LINE, EXT Sensitivity and Frequency ... , 0.8Vp—p EXT 0.5div INT, 0.5vp---PEXT TV-H: At least 1 div or 1V p-p, Input ...