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7S12: Difference between revisions
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title=Tektronix 7S12| | title=Tektronix 7S12| | ||
summary=Time Domain Reflectometer / Sampler| | summary=Time Domain Reflectometer / Sampler| | ||
image=7s12- | image=7s12-s6-s52-f.jpg| | ||
caption=Tektronix 7S12 TDR/Sampler| | caption=Tektronix 7S12 TDR/Sampler with [[S-6]] and [[S-52]] heads| | ||
years=1971 – ?| | years=1971 – ?| | ||
type=combined horizontal/vertical plugin| | type=combined horizontal/vertical plugin| | ||
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}} | }} | ||
The Tektronix 7S12 is a | The Tektronix '''7S12''' is a Time Domain Reflectometer / Sampler plug-in for [[7000-series scopes]]. It occupies two mainframe plug-in bays (one vertical, one horizontal). | ||
The 7S12 has two bays for [[:Category:7000 and 3S series sampling heads|S-series plug-in modules ("heads")]]. The right bay accepts a pulse generator or a trigger recognizer plug-in, whereas the left bay accepts a sampling plug-in. | The 7S12 has two bays for [[:Category:7000 and 3S series sampling heads|S-series plug-in modules ("heads")]]. The right bay accepts a pulse generator or a trigger recognizer plug-in, whereas the left bay accepts a sampling plug-in. | ||
The typical configuration is to have an [[S-6]] on the left and an [[S-52]] on the right for time domain reflectometry, or an [[S-4]] on the left and an [[S-53]] on the right as a | The typical configuration is to have an [[S-6]] on the left and an [[S-52]] on the right for time domain reflectometry, or an [[S-4]] on the left and an [[S-53]] on the right as a generic sampler. | ||
The 7S12 can also control an optional [[7S11]] through its side contacts, adding a second input channel. | The 7S12 can also control an optional [[7S11]] through its side contacts, adding a second input channel. | ||
Y axis can be scaled in voltage (mV) or distance (ρ) units, X axis in time or distance. | Y axis can be scaled in voltage (mV) or distance (ρ) units, X axis in time or distance. | ||
==Specifications== | ==Specifications== | ||
{{BeginSpecs}} | |||
{{Spec | Sweep modes | Single / Repetitive / Manual / External input}} | |||
{{Spec | With S-6 and S-52 | | |||
* Pulse: 200 mV into 50 Ω | |||
* Rise time: < 35 ps for incident step, < 45 ps for displayed reflection | |||
* Jitter: < 10 ps | |||
* Weight | }} | ||
{{Spec | Sweep modes | | |||
* free-running | |||
* single | |||
* manual | |||
* external input | |||
}} | |||
{{Spec | Weight | 2.13 kg (4.7 lbs)}} | |||
{{EndSpecs}} | |||
==Links== | ==Links== | ||
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<gallery> | <gallery> | ||
Image:7s12-front.jpg | Front view without sampling head plug-ins | Image:7s12-front.jpg | Front view without sampling head plug-ins | ||
Image:7s12-s6-s52-f.jpg | Front view with [[S-6]] sampling head and [[S-52]] pulse generator | |||
Image:Tek 7s12.jpg |7S12 with [[S-53]] trigger recognizer in left bay (normally right) | |||
Image:7s12-s6-s52-7613.jpg | 7S12 "self portrait" in [[7613]] storage mainframe | |||
</gallery> | |||
===Inside=== | |||
<gallery> | |||
Image:7s12-left.jpg | Left side | Image:7s12-left.jpg | Left side | ||
Image:7s12-left-cover.jpg | Left side with cover. Side contacts to interface [[7S11]] are exposed. | Image:7s12-left-cover.jpg | Left side with cover. Side contacts to interface [[7S11]] are exposed. | ||
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Image:7s12-hoizontal.jpg | Horizontal board | Image:7s12-hoizontal.jpg | Horizontal board | ||
Image:7s12-vertical.jpg | Vertical board | Image:7s12-vertical.jpg | Vertical board | ||
</gallery> | </gallery> | ||
===Measurements=== | |||
<gallery> | |||
Image:7s12-self-portrait.jpg | "Self Portrait" — pulse reflected on S-6 "through" path (approx. 120 ps one way) | |||
Image:7s12-s52-incident.jpg | 7S12 displaying the incident pulse from an S-52 (nom. < 25 ps) through an S-6 head (nom. < 30 ps). Displayed rise time ~35 ps confirms spec. | |||
Image:7s12-5in.jpg | 7S12/S-6/S-52 displaying pulse reflection from ~ 5 in semi-rigid SMA cable. Stored display of two traces. Left trace: cable only, right trace: cable plus SMA-to-BNC adapter (~ 25 mm) | |||
Image:7s12-reflected.jpg | 7S12/S-6/S-52 displaying reflected pulse from end of 5 in semi-rigid SMA cable. Stored display overlaying multiple traces, left to right: cable alone, SMA-to-BNC adapter added, BNC f-f adapter added, (cheap) 50 Ω terminator added. | |||
</gallery> | |||
[[Category:7000 series combined plugins]] | [[Category:7000 series combined plugins]] | ||