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S-50: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=Pulse Generator | | |series=7000 and 3S series sampling heads | ||
image=Tek s-50 front.jpg | | |type=S-50 | ||
caption=S-50 Head | |summary=Pulse Generator | ||
|image=Tek s-50 front.jpg | |||
introduced=1969 | | |caption=S-50 Head | ||
discontinued=1975 | | |introduced=1969 | ||
manuals= | |discontinued=1975 | ||
|designers= | |||
|manuals= | |||
* [http://w140.com/tek_s-50.pdf Tektronix S-50 Manual (46MB, PDF)] | * [http://w140.com/tek_s-50.pdf Tektronix S-50 Manual (46MB, PDF)] | ||
* [http://w140.com/tek_s-series_sampling_heads.pdf Tektronix S-Series Sampling Heads (195MB, PDF)] | * [http://w140.com/tek_s-series_sampling_heads.pdf Tektronix S-Series Sampling Heads (195MB, PDF)] | ||
}} | }} | ||
The '''Tektronix S-50''' is a pulse generator head that produces 400 mV pulses with a rise time under 25 ps. | |||
The '''Tektronix S-50''' is a pulse generator head that produces 400 mV pulses with a rise time under 25 ps. The pulse output is an | The pulse output is an [[SMA connector]]. The PRETRIG OUT and TRIG OUT signals use [[BSM connector]]s. | ||
[[SMA connector]]. The PRETRIG OUT and TRIG OUT signals use [[BSM connector]]s. | |||
The output diode is the same one that the [[S-52]] uses, the [[153-0040-00]]. | The output diode is the same one that the [[S-52]] uses, the [[153-0040-00]]. | ||
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The S-50 is similar to the [[S-52]], but the output pulse amplitude of the S-50 is 400 mV, twice that of the S-52. | The S-50 is similar to the [[S-52]], but the output pulse amplitude of the S-50 is 400 mV, twice that of the S-52. | ||
The S-50's output tunnel diode is directly connected to the main pulse output connector. | The S-50's output tunnel diode is directly connected to the main pulse output connector. | ||
The S-52 has a 48-ohm resistor between the output tunnel diode and the main pulse output connector, | The S-52 has a 48-ohm resistor between the output tunnel diode and the main pulse output connector, resulting in a 2:1 voltage divider. | ||
resulting in a 2:1 voltage divider. | |||
Another difference between the S-50 and S-52 is the presence of a TRIG OUT on the front of the of S-50. | Another difference between the S-50 and S-52 is the presence of a TRIG OUT on the front of the of S-50. | ||
Both have PRETRIGGER OUT connectors. | Both have PRETRIGGER OUT connectors. | ||
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At the circuit level, the S-50 and S-52 differ significantly. | At the circuit level, the S-50 and S-52 differ significantly. | ||
Both use a current switch to bias the output tunnel diode when | Both use a current switch to bias the output tunnel diode when it is in the "armed" state. | ||
it is in the "armed" state. The S-50 uses another tunnel diode to add a short pulse of current that "fires" the output tunnel diode. | The S-50 uses another tunnel diode to add a short pulse of current that "fires" the output tunnel diode. | ||
The S-52 uses a [[snap-off diode]] to generate this firing pulse. | The S-52 uses a [[snap-off diode]] to generate this firing pulse. | ||