Sampler: Difference between revisions
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The signal chain in sampling | The signal chain in [[sampling oscilloscope]]s contains a sampler, | ||
which measures the input signal at a moment in time. | which measures the input signal at a moment in time. | ||
Some sampling scopes, e.g., the [[11201]], have the sampler as an built-in component. | Some sampling scopes, e.g., the [[11201]], have the sampler as an built-in component. | ||
Other sampling scopes have the sampler as a built-in component of the vertical plug-in, e.g., the [[3S76]]. | Other sampling scopes have the sampler as a built-in component of the vertical plug-in, e.g., the [[3S76]]. | ||
Another setup is to have the sampler in a sampling head, e.g., the [[S-4]]. | Another setup is to have the sampler in a sampling head, e.g., the [[S-4]]. | ||
Sampling sometimes plug directly into the oscilloscope mainframe, e.g., in the [[11801]]. | Sampling heads sometimes plug directly into the oscilloscope mainframe, e.g., in the [[11801]]. | ||
In other cases, the sampling head plugs into a vertical plug-in, e.g., the [[7S11]], which plugs into the oscilloscope mainframe. | In other cases, the sampling head plugs into a vertical plug-in, e.g., the [[7S11]], which plugs into the oscilloscope mainframe. | ||
Sampling heads can also be used on extension cables, e.g., the [[S-series_sampling_head_extenders|012-0125-00]], | Sampling heads can also be used on extension cables, e.g., the [[S-series_sampling_head_extenders|012-0125-00]], | ||
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This is used in the [[N|Type N]]. | This is used in the [[N|Type N]]. | ||
<gallery> | <gallery> | ||
Tek n sampler.png|Tek [[N|Type N]] sampler. The "interrogate diode" is the sampling diode. | Tek n sampler.png|Tek [[N|Type N]] sampler. The "interrogate diode" is the [[sampling diode]]. | ||
</gallery> | </gallery> | ||
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Tek s76 sampler a.png|Tek [[3S76]] sampler | Tek s76 sampler a.png|Tek [[3S76]] sampler | ||
</gallery> | </gallery> | ||
== Six-Diode Sampler== | == Six-Diode Sampler== | ||
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* [http://w140.com/frye_s4_gate.pdf George Frye's Explanation of S-4 sampler in October 1968 Service Scope (PDF)] | * [http://w140.com/frye_s4_gate.pdf George Frye's Explanation of S-4 sampler in October 1968 Service Scope (PDF)] | ||
[[Category:Circuits and Concepts]] | |||
Revision as of 04:00, 3 August 2018
The signal chain in sampling oscilloscopes contains a sampler, which measures the input signal at a moment in time.
Some sampling scopes, e.g., the 11201, have the sampler as an built-in component. Other sampling scopes have the sampler as a built-in component of the vertical plug-in, e.g., the 3S76.
Another setup is to have the sampler in a sampling head, e.g., the S-4. Sampling heads sometimes plug directly into the oscilloscope mainframe, e.g., in the 11801. In other cases, the sampling head plugs into a vertical plug-in, e.g., the 7S11, which plugs into the oscilloscope mainframe. Sampling heads can also be used on extension cables, e.g., the 012-0125-00, which allows the path between the device under test and the sampling head to be as short as possible for minimum signal degradation.
Tektronix sampling oscilloscopes use at least four different circuits: one-diode, two-diode, four-diode, and six-diode.
One-Diode Sampler
This is used in the Type N.
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Tek Type N sampler. The "interrogate diode" is the sampling diode.
Two-Diode Sampler
This is used in the early 4S2, S-1, 1502, S-2, and the 7S14.
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Tek S-1 sampler
Four-Diode Sampler
This is used in the 3S76.
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Tek 3S76 sampler
Six-Diode Sampler
This is used in the S-4 and S-6.
