S-54

The S-54 is a pulse head designed for use with the 7S12 as a long line TDR unit. It has a 1 ns risetime and variable pretrigger pulse output. The pretrigger-to-main pulse jitter is specified to be 100 ps or less when the lead time is set to 120 ns. The output pulse is generated by a Schottky diode clamping circuit.

Specifications

• Main Output:
  • Output amplitude: +400 mV into 50 Ω (BNC)
  • Rise time: < 1 ns
  • Pulse duration: 25 µs ± 2 µs.
• Pre-trigger output:
  • Amplitude: +200 mV into 50 Ω (BSM)
  • Rise time: 5 ns
  • Pre-trig time: 120 ns – 1 µs before main pulse
  • Jitter: < 100 ps at 120 ns, < 1 ns at 1 µs
  • Pulse duration: 20 ns

Links

• http://www.barrytech.com/tektronix/tek7000/teks54.html
• http://www.helmut-singer.de/stock/405473119.html

Pictures

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  Schematic