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S-50: Difference between revisions
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series=[[:Category:Sampling plugins|7000/S3 series Sampling Plugins]] | | series=[[:Category:Sampling plugins|7000/S3 series Sampling Plugins]] | | ||
introduced=1969 | | introduced=1969 | | ||
discontinued= | discontinued=1975 | | ||
manuals= | 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)] | ||
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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 '''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 | ||
[[ | [[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, resulting in a 2:1 voltage divider. | The S-52 has a 48-ohm resistor between the output tunnel diode and the main pulse output connector, | ||
Another difference between the S-50 and S-52 is the presence of a TRIG OUT on the front of the of S-50. | 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. | |||
Both have PRETRIGGER OUT connectors. | |||
The pretrigger of the S-50 leads the main pulse by 75 ns, that of the S-52 by 85 ns. | The pretrigger of the S-50 leads the main pulse by 75 ns, that of the S-52 by 85 ns. | ||
At the circuit level, the S-50 and S-52 differ significantly. | At the circuit level, the S-50 and S-52 differ significantly. | ||
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. | Both use a current switch to bias the output tunnel diode when | ||
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-52 uses a [[snap-off diode]] to generate this firing pulse. | |||
Sequencing of events (arming the output diode, firing it, resetting it) is controlled by analog timing circuits in the S-50. | Sequencing of events (arming the output diode, firing it, resetting it) is controlled by analog timing circuits in the S-50. | ||
The S-52 uses a digital counter and a decoder to generate the internal control signals. | |||
==Specifications== | ==Specifications== | ||
:{| | :{| class="wikitable" | ||
|- | |- | ||
! scope="col" | | ! scope="col" | | ||
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<gallery> | <gallery> | ||
Tek s-50 block.png|block diagram | |||
S-50 schem.png|schematic | |||
Tek s-50.JPG|front view | |||
Tek s-50 20203 1.jpg | |||
Tek s-50 20203 2.jpg | |||
</gallery> | </gallery> | ||
[[Category:7000 and 3S series sampling heads]] | [[Category:7000 and 3S series sampling heads]] | ||