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The Tektronix S-53 '''Trigger Recognizer''' head can be used in the right bay of the [[7S12]] TDR/Sampler plug-in | The Tektronix S-53 '''Trigger Recognizer''' head can be used in the right bay of the [[7S12]] TDR/Sampler plug-in | ||
or externally in a type [[285]] enclosure. It essentially contains the entire trigger circuit of an oscilloscope. | or externally in a type [[285]] enclosure. It essentially contains the entire trigger circuit of an oscilloscope. | ||
{{BeginSpecs}} | |||
{{Spec | Bandwidth | 1 GHz }} | |||
{{Spec | Input impedance | 50 Ω [[BNC connector]] }} | |||
{{Spec | Sensitivity | 10 mV to 1 V (p-p) }} | |||
{{Spec | Jitter | max. 15 ps or less (from input signal to trigger-out) }} | |||
{{Spec | Delay | 15 ns (from input signal to trigger-out) }} | |||
{{Spec | Trigger-out signal | 1 V into 50 Ω with 600 mV/ns slew rate }} | |||
{{EndSpecs}} | |||
==Internals== | |||
The S-53 uses tunnel diode triggering with an amplifier before the tunnel diode. | The S-53 uses tunnel diode triggering with an amplifier before the tunnel diode. | ||
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tunnel diode CR25. The extra current from Q20 or Q22 pushes CR25 over its peak current, and it switches | tunnel diode CR25. The extra current from Q20 or Q22 pushes CR25 over its peak current, and it switches | ||
to the high voltage state. | to the high voltage state. | ||
==Pictures== | ==Pictures== |