Tektronix TDS784D oscilloscope 4 channel, 1 GHz, 4 Gsps 4 channel, 1 GHz, 4 Gsps 1 Mohm, 50 ohm versie 6.6E opties 13, 1F, 2F, 2C, 4C 13 RS232, Centronix Interface 1F Floppy disk 2C Communication Signal Analyzer 2F Extended waveform, Math 4C Optical, Long Wavelength instavu vertical 8 bit, 13 bit in high resolution VGA output verzegeling intact