Sell Test Equipment

S4 Tektronix Probe

The S4 is a probe from Tektronix. Probes can use pulse waveforms to test components without removing them from circuits with in-circuit capabilities.

Additional Features:

  • Rise time: 25 ps (observed with S-50 or S-52, 35 ps)
  • Bandwidth: 14.5 GHz
  • Input impedance: 50 Ω (terminated SMA connector)
  • Input range: Operating, 1 Vp-p; max. safe overload, ±5 V
  • Noise: < 5 mV
  • Features trigger signal pick-off for internal triggering
  • Compatible with 3S2, 3S5, 3S6, 7S11, 7S12 Sampling Plugins

The Tektronix S-4 sampling gate is based upon a traveling wave trapped-charge transmission line in which the sampling window is set by the propagation time of a pulse edge through a thick-film transmission line. This technique requires only a sharp pulse edge rather than a precise pulse width, which is harder to generate. The sampling diodes are housed in a special coaxial connector that provides a high bandwidth signal path.

The S-4 Sampling Head is a 25 ps risetime unit with a 50 Ohm input impedance, and an equivalent bandwidth from DC to 14 GHz. The S-4 can be plugged into the 7S11 or 7S12 Sampling units, or attached by a sampling head extender for remote use. A trigger pickoff within the S-4 provides a trigger signal output from the plug-in unit.

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