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S-52: Difference between revisions
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like the [[3S2]], [[7S11]], and [[7S12]]. | like the [[3S2]], [[7S11]], and [[7S12]]. | ||
It puts out a 200 mV pulse into a load of 50 Ω. | It puts out a 200 mV pulse into a load of 50 Ω. | ||
The pulse has a rise time of 25 ps or less. | |||
The output is an [[SMA connector]]. | The output is an [[SMA connector]]. | ||
In addition to the main pulse output, the S-52 also produces a pre-trigger pulse 85 ns before the main pulse. | In addition to the main pulse output, | ||
the S-52 also produces a pre-trigger pulse 85 ns before the main pulse. | |||
The delay is generated with a digital counter, | The delay is generated with a digital counter, | ||
and jitter between the pre-trigger pulse and the main pulse is specified as less than 10 ps. | and jitter between the pre-trigger pulse and the main pulse is specified as less than 10 ps. | ||
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==Internals== | ==Internals== | ||
The S-52 generates the main output pulse using a 50 mA low-capacitance [[tunnel diodes|tunnel diode]] with part number [[153-0040-00]]. | The S-52 generates the main output pulse using a | ||
50 mA low-capacitance [[tunnel diodes|tunnel diode]] with part number [[153-0040-00]]. | |||
The S-52 is [[S-50#Comparison_of_S-50_and_S-52|similar to the S-50]], | The S-52 is [[S-50#Comparison_of_S-50_and_S-52|similar to the S-50]], | ||
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Although the S-52 produces a smaller pulse, its output impedance is much better controlled than that of the S-50, | Although the S-52 produces a smaller pulse, its output impedance is much better controlled than that of the S-50, | ||
and the output resistor may also provide some limited protection for the output tunnel diode. | and the output resistor may also provide some limited protection for the output tunnel diode. | ||
The S-52 uses a [[156-0048-00]] transistor array in the timing board. | |||
==Links== | ==Links== | ||