Osciloscopio digital calibrado Tektronix TDS 3012B horas de uso muy bajas 100 MHz
Most photos are of serial # B031551, but all aare in equally nice shape. 3rd photo shows a 2Vpp 1Khz signal (from my PG506) fed into both 1 & 2 displaying correctly. 4th shows 1mS tickmarks from my TG501 displaying correctly.