7S12: Difference between revisions
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{{Plugin Sidebar| | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=Time Domain Reflectometer / Sampler| | |series=7000-series scopes | ||
image=7s12-s6-s52-f.jpg| | |type=7S12 | ||
caption=Tektronix 7S12 TDR/Sampler with [[S-6]] and [[S-52]] heads| | |summary=Time Domain Reflectometer / Sampler | ||
|image=7s12-s6-s52-f.jpg | |||
|caption=Tektronix 7S12 TDR/Sampler with [[S-6]] and [[S-52]] heads | |||
|introduced=1971 | |||
|discontinued=1989 | |||
* [ | |manuals= | ||
* [[Media:070-1244-00.pdf | Tektronix 7S12 Instruction Manual S/N B020000-up revised June 1986]] (OCR) | |||
<small> | |||
'''Alternate copies''' | |||
* [[Media:070-1244-00 2.pdf|Tektronix 7S12 Manual]] (greyscale, OCR) | |||
* [https://bama.edebris.com/download/tek/7s12/tek-7s12.pdf Tektronix 7S12 Manual] (PDF @ BAMA) | |||
}} | }} | ||
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 | 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 | The typical configuration is to have an [[S-6]] on the left and an [[S-52]] on the right for time domain reflectometry, or a sampling head like the [[S-4]] on the left and an [[S-53]] on the right as a generic sampler. | ||
The | The 7S12 can also control an optional [[7S11]] through its [[7000-series Sampling Shoe|left side contacts]], adding a second input channel. | ||
Y axis can be scaled in voltage (mV) or reflection coefficient (ρ) units, X axis in time or distance. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Sweep modes | Single / Repetitive / Manual / External input}} | {{Spec | Sweep modes | Single / Repetitive / Manual / External input}} | ||
{{Spec | With S-6 and S-52 | | {{Spec | With [[S-6]] and [[S-52]] | | ||
* Pulse: 200 mV into | * Pulse: 200 mV into 50 Ω | ||
* Rise time: < | * Rise time: < 35 ps for incident step, < 45 ps for displayed reflection | ||
* Jitter: < | * Jitter: < 10 ps | ||
}} | |||
{{Spec | With [[S-5]] and [[S-54]] | | |||
* Pulse: > 400 mV into 50 Ω | |||
* Rise time: < 1.5 ns for displayed reflection of a shorted line | |||
* Jitter: < 20 ps | |||
}} | |||
{{Spec | Sweep modes | free-running, single, manual, external input | |||
}} | }} | ||
{{Spec | | {{Spec | Air Dielectric Range | | ||
* | * 15 m (49 ft) | ||
* | * 150 m (490 ft) | ||
* | * 1500 m (4900 ft) | ||
}} | }} | ||
{{Spec | Weight | 2.13 kg (4.7 lbs)}} | {{Spec | Weight | 2.13 kg (4.7 lbs)}} | ||
Line 40: | Line 50: | ||
==Links== | ==Links== | ||
* | * [[Media:062-1244-00.pdf | Tektronix 062-1244-00: Time-Domain Reflectometry Measurement Concepts]], James A. Strickland, 1969. pages. | ||
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7S12.htm Tek 7S12 | * [[Media:Service Scope 45 Aug 1967.pdf | Service Scope No. 45, August 1967 - Time-Domain Reflectometry Theory]] | ||
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7S12.htm Tek 7S12 @ amplifier.cd] | |||
* [http://www.barrytech.com/tektronix/tek7000/tek7s12.html Tek 7S12 @ barrytech.com] | |||
* [http://www.youtube.com/watch?v=btmrIN62iDc Evaluation of 7S12 performance (video)] | * [http://www.youtube.com/watch?v=btmrIN62iDc Evaluation of 7S12 performance (video)] | ||
* [http://www.perdrix.co.uk/7S12/index.htm#mozTocId226019 7S12 extender board by Dave Partridge] | * [http://www.perdrix.co.uk/7S12/index.htm#mozTocId226019 7S12 extender board by Dave Partridge] | ||
{{Documents|Link=7S12}} | |||
{{PatentLinks|7S12}} | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
7s12-front.jpg | Front view without sampling head plug-ins | |||
7s12-s6-s52-f.jpg | Front view with [[S-6]] sampling head and [[S-52]] pulse generator | |||
7s12-s6-s52-7613.jpg | 7S12 TDR "self portrait" in [[7613]] storage mainframe | |||
7s12-7s11-1ghz-store.jpg | 7S12 as a sampler, displaying a 1 GHz sine using a [[S-6]] sampling head and [[S-53]] trigger recognizer, 2<sup>nd</sup> channel (top) on a [[7S11]] with [[S-4]] sampling head. | |||
Tek 7s12 metric dial tape.jpg|Metric dial tape | |||
Tek 7s12 with s-6 and s-52.jpg | |||
Tek 7s12 s-6 s-52 with cable.jpg | |||
tek_7s12_with_heads.jpg | |||
</gallery> | </gallery> | ||
===Inside=== | ===Inside=== | ||
<gallery> | <gallery> | ||
7s12-left.jpg | Left side | |||
7s12-left-cover.jpg | Left side with cover. Side contacts to interface [[7S11]] are exposed. | |||
7s12-right.jpg | Right side | |||
7s12-top.jpg | Top view | |||
7s12-horizontal.jpg | Horizontal board | |||
7s12-vertical.jpg | Vertical board | |||
</gallery> | </gallery> | ||
===Measurements=== | ===Measurements=== | ||
====TDR==== | |||
<gallery> | |||
7s12-self-portrait.jpg | TDR "Self Portrait" — pulse reflected on S-6 "through" path (approx. 120 ps one way) | |||
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. | |||
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) | |||
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. | |||
7s12-s52-pulse-1.jpg | Full pulse pattern of a 7S12/S-52 in real time (top trace) and sampled (bottom trace) shown simultaneously on [[7844]]. 7S12 trace at slowest possible sweep. | |||
7s12-s52-pulse-2.jpg | S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on [[7844]]. Approximately equal time scales. | |||
</gallery> | |||
====Probe rise times==== | |||
<gallery> | <gallery> | ||
P6202-risetime-7s12-1ns.jpg | Rise time of a [[P6202]] 500 MHz FET probe measured on a 7S12 with [[S-52]] and [[S-4]] (in a [[7844]] mainframe), at 1 ns/Div | |||
P6202-risetime-7s12-100ps.jpg | Rise time of a [[P6202]] 500 MHz FET probe measured on a 7S12 with [[S-52]] and [[S-4]] (in a [[7844]] mainframe), at 100 ps/Div | |||
P6230-rt1.jpg | P6230 Rise time, no ground lead | |||
P6230-rt2.jpg | P6230 Rise time, no ground lead, enlarged – 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth) | |||
P6230-rt3.jpg | P6230 with "low inductance" ground lead – rise time 400 ps, bandwidth 875 MHz | |||
</gallery> | |||
====As a generic sampler==== | |||
<gallery> | |||
7s12-7s11-1ghz-nonstore.jpg | [[7S11]] with [[S-4]] and 7S12 with [[S-6]] and [[S-53]] displaying a 1 GHz sine in normal mode without storage. Sampling is evident. | |||
7s12-7s11-1ghz-store2.jpg | [[7S11]] with [[S-4]] and 7S12 with [[S-6]] and [[S-53]] displaying a 1 GHz sine in high-res mode with variable-persistence storage on a [[7613]]. | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7S12}} | |||
[[Category:7000 series combined plugins]] | [[Category:7000 series combined plugins]] | ||
[[Category: | [[Category:7000 series sampling plugins]] | ||
[[Category:Time-domain reflectometers]] | [[Category:Time-domain reflectometers]] | ||
Latest revision as of 14:36, 21 June 2024
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 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 a sampling head like the 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 left side contacts, adding a second input channel.
Y axis can be scaled in voltage (mV) or reflection coefficient (ρ) units, X axis in time or distance.
Key Specifications
Sweep modes | Single / Repetitive / Manual / External input |
---|---|
With S-6 and S-52 |
|
With S-5 and S-54 |
|
Sweep modes | free-running, single, manual, external input |
Air Dielectric Range |
|
Weight | 2.13 kg (4.7 lbs) |
Links
- Tektronix 062-1244-00: Time-Domain Reflectometry Measurement Concepts, James A. Strickland, 1969. pages.
- Service Scope No. 45, August 1967 - Time-Domain Reflectometry Theory
- Tek 7S12 @ amplifier.cd
- Tek 7S12 @ barrytech.com
- Evaluation of 7S12 performance (video)
- 7S12 extender board by Dave Partridge
Documents Referencing 7S12
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
7000 series brochure March 1973.pdf | Brochure | 7000 series brochure, March 1973 | 1973 | 7A11 • 7A12 • 7A13 • 7A14 • 7A15A • 7A16A • 7A17 • 7A18 • 7A19 • 7A21N • 7A22 • 7B50 • 7B53A • 7B70 • 7B71 • 7B92 • 7CT1N • 7D11 • 7D13 • 7D14 • 7D15 • 7M11 • 7L12 • 7S11 • 7S12 • 7T11 • 7704A • R7704 • 7904 • R7903 • 7603 • R7603 • 7403N • R7403N • 7313 • R7313 • 7613 • R7613 • 7623 • R7623 • P7001 | |
42W-5334.pdf | Application Note | Automated TDR Testing Made Easy with the 7854 Oscilloscope/7S12 Sampler Plug-In | 1983 | 7854 • 7S12 | |
Rochester LLE Review Volume 25.pdf | Article | Computerized, Wide-Bandwidth, Multichannel, Soft X-Ray Diode Spectrometer for High Density Plasma Diagnosis | 1985 | 7S12 • S-52 • S-6 • LM7912 • LM7912A • 7912DPO | |
RISOM2873.pdf | Article | Improvement of the Bandwidth of the Transient Digitizers in the LIDAR Thomson Scattering Diagnostic on JET | Erik Kristensen | 1990 | 7912AD • 7A29 • 7704A • 7S12 • S-6 • S-52 |
Patents that may apply to 7S12
Page | Title | Inventors | Filing date | Grant date | Links |
---|---|---|---|---|---|
Patent US 3562464A | Cam actuated switch having movable and fixed contacts on circuit board | Howard Vollum • Willem H Verhoef • Tony Sprando | 1968-10-07 | 1971-02-09 | Cam switches • 2701 • 2703 • 432 • 434 • 465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7B10 • 7B15 • 7B50 • 7B51 • 7B52 • 7B53A • 7B50A • 7B70 • 7B71 • 7B80 • 7B85 • 7B87 • 7B92 • 7B92A • 7D01 • 7D12 • 7D15 • 7J20 • 7S12 • 7T11 • 7T11A • AM503 |
Patent US 3584174A | Push-button switch apparatus having cam actuated switch contacts and selective illumination means | Tony Sprando • Peter S Winkelmann | 1969-06-09 | 1971-06-08 | Back-lit switches • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A16P • 7A22 • 7A42 • 7B42N • 7B50 • 7B51 • 7B52 • 7B53A • 7B70 • 7B71 • 7B92 • 7B92A • 7D10 • 7D11 • 7D12 • 7D114 • 7D15 • 7D20 • 7F10 • 7L5 • 7L12 • 7L13 • 7L14 • 7L18 • 7M13 • 7S11 • 7S12 • 7T11 • 067-0587-00 • 067-0587-01 • 067-0587-02 • 067-0587-10 |
Pictures
-
Front view without sampling head plug-ins
-
7S12 TDR "self portrait" in 7613 storage mainframe
-
Metric dial tape
-
-
-
Inside
-
Left side
-
Left side with cover. Side contacts to interface 7S11 are exposed.
-
Right side
-
Top view
-
Horizontal board
-
Vertical board
Measurements
TDR
-
TDR "Self Portrait" — pulse reflected on S-6 "through" path (approx. 120 ps one way)
-
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.
-
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)
-
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.
-
Full pulse pattern of a 7S12/S-52 in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. 7S12 trace at slowest possible sweep.
-
S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. Approximately equal time scales.
Probe rise times
-
P6230 Rise time, no ground lead
-
P6230 Rise time, no ground lead, enlarged – 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth)
-
P6230 with "low inductance" ground lead – rise time 400 ps, bandwidth 875 MHz