Tektronix, TDS420

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Tektronix, TDS420
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Product description

The Tektronix TDS420 oscilloscope is a graph-displaying device – it draws a graph of an electrical signal. In most applications, the graph shows how signals change over time: the vertical (Y) axis represents voltage and the horizontal (X) axis represents time. The intensity or brightness of the display is sometimes called the Z axis.

The Tektronix TDS420 oscilloscope's simple graph can tell you many things about a signal, such as: the time and voltage values of a signal, the frequency of an oscillating signal, the “moving parts” of a circuit represented by the signal, the frequency with which a particular portion of the signal is occurring relative to, other portions, whether or not a malfunctioning component is distorting the signal, how much of a signal is direct current (DC) or alternating current (AC) and how much of the signal is noise and whether the noise is changing with time.


Technical details:

  • Sample rate 100 Msa/s
  • 4 channels
  • Input Impedance Selections : 1MOhm or 50 Ohm
  • 150MHz Bandwidths
  • Time/division range 1ns to 20 s/div
  • Sensitivity - 1 mV to 10 V/div
  • Input coupling AC, DC or GND
  • Peak detect
  • VGA, GPIB out


  • Time base: double
  • Channels: 4
  • Display: CRT
  • BandWidth: 150 MHz
  • Sampling: 100 Ms/s