S-4: Difference between revisions
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image=s4-crop.jpg | | image=s4-crop.jpg | | ||
caption=S-4 head | | caption=S-4 head | | ||
series=[[ | series=[[3S2]], [[7S11]], [[7S12]] Sampling Plugins | | ||
years=1968 – ? | | years=1968 – ? | | ||
manuals= | manuals= | ||
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==Links== | |||
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/S4.html S-4 page @ amplifier.cd] | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> |
Revision as of 07:41, 17 July 2014
The Tektronix S-4 is a sampling head for 7000- and 3S-series samplers. It was designed by George Frye and introduced in 1968. It is the fastest of the S-series plug-in samplers. (An interesting comparison of different sampling heads is found in "AN-3042a, Revision 1, 2/89".)
The S-4 sampling gate is based upon a traveling wave trapped-charge transmission line in which the sampling window is set by the propagation time of a pulse edge through a thick-film transmission line. This technique requires only a sharp pulse edge rather than a precise pulse width, which is harder to generate. The sampling diodes are housed in a special coaxial connector that provides a high bandwidth signal path.
Specifications
Key Specifications
Rise time | 25 ps |
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Bandwidth | 14.5 GHz |
Input impedance | 50 Ω (terminated SMA port) |
Noise | < 5 mV |
Features |
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Links
Pictures
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Top view of the S4 plug-in
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Left view
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Right view
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Schematic