S-3: Difference between revisions
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|discontinued=1989 | |discontinued=1989 | ||
|manuals= | |manuals= | ||
* [[Media:070-0765-00.pdf|Tektronix S-3 Manual]] ( | * [[Media:070-0765-00.pdf|Tektronix S-3 Manual]] (OCR) | ||
* [ | * [[Media:Tek s-3 whole foldouts.pdf|Tektronix S-3 Manual Foldouts]] (whole, color) | ||
* [[Media:Tek s-3 mod at sn b020120.pdf|Tektronix S-3 Modification at Serial Number B020120]] | |||
* [[Media:070-1148-00.pdf|Tektronix S-3A Manual]] (070-1148-01 also exists) | |||
}} | }} | ||
The '''Tektronix S-3 sampling head''' is a plug-in head for use with the | The '''Tektronix S-3 sampling head''' is a plug-in head for use with the 7000 series sampling plug-ins or the Type [[3S2]], [[3S5]], and [[3S6]] samplers. | ||
7000 series sampling plug-ins or the Type [[3S2]], [[3S5]], and [[3S6]] samplers. | |||
The plug-in includes a permanently attached 1× probe with the sampling bridge enclosed in the probe. | The plug-in includes a permanently attached 1× probe with the sampling bridge enclosed in the probe. | ||
Optional 10× or 100× attenuator tips (010-0364-00, 010-0365-00) provide extended input voltage range; the optional [[VP-2]] voltage pickoff converts it to a 50 Ω feed-through sampling head. | Optional 10× or 100× attenuator tips (010-0364-00, 010-0365-00) provide extended input voltage range; the optional [[VP-2]] voltage pickoff converts it to a 50 Ω feed-through sampling head. | ||
{{BeginSpecs}} | |||
{{Spec | Rise time | ≤350 ps (×10, ≤400 ps; ×100, ≤500 ps) }} | |||
{{Spec | Input impedance | 100 kΩ // 2.3 pF (×10, 1 MΩ // 2 pF; ×100, 1 MΩ // 1.7 pF) }} | |||
{{Spec | Maximum signal | 2 V<sub>p-p</sub> (×10, 20 V<sub>p-p</sub>; ×100, 200 V<sub>p-p</sub>) }} | |||
{{Spec | Maximum safe input | max. ±100 V, max. sine input 20 V<sub>p-p</sub> (×10 or ×100, max. ±350 V, max. sine input 200 V<sub>p-p</sub>) }} | |||
{{Spec | Features | | |||
* no trigger pickoff for internal triggering | |||
* offset voltage of either ±1 V or ±2 V (at ×1) can be selected via a toggle switch on the front panel | |||
}} | |||
{{EndSpecs}} | |||
==Links== | |||
{{Documents|Link=S-3}} | |||
{{PatentLinks|S-3}} | |||
== Differences between S-3 and S-3A == | ==Differences between S-3 and S-3A == | ||
The S-3A sampling head has | The S-3A sampling head has a 10× improvement in baseline shift due to cable flexing. | ||
All other specifications are identical to the ordinary S-3. | All other specifications are identical to the ordinary S-3. | ||
The major differences in design involves the | The major differences in design involves the strobe board in the box part of the probe eliminating the snap-off diode and adding a common mode choke in the S-3A , | ||
but some changes are also made to the circuits in the body of the probe. | but some changes are also made to the circuits in the body of the probe. | ||
== Difference between the S-3 and the P6038 == | ==Difference between the S-3 and the P6038 == | ||
The S-3 probe contains a compensated attenuator before the sampling bridge. | The S-3 probe contains a compensated attenuator before the sampling bridge. | ||
The [[P6038]] does not. | The [[P6038]] does not. | ||
The S-3 probe has a JFET buffer between the holding cap and the probe cable. | The S-3 probe has a JFET buffer between the holding cap and the probe cable. | ||
The P6038 does not. | The P6038 does not. | ||
Both use the [[152-0368-00]] sampling bridge. | Both use the [[152-0368-00]] sampling bridge. The sampling pulse is generated by a [[snap-off diode]] ([[152-0368-00]]). | ||
== Repair of Sampling Diodes == | == Repair of Sampling Diodes == | ||
| Line 50: | Line 52: | ||
==Pictures== | ==Pictures== | ||
'''S-3''' | |||
<gallery> | |||
Tek s3 probe sample bridge.jpg | S-3 probe sampling bridge | |||
Tek s3 sample bridge2.jpg | S-3 probe sampling bridge | |||
S3_frontend.png | S-3 schematic | |||
010-0367-00 for P6038 S-3 chopper.jpg | [[010-0367-00]] 10X attenuator | |||
</gallery> | |||
'''S-3A''' | |||
<gallery> | <gallery> | ||
S3a box front.jpg | Front | |||
S3a probe external1.jpg | S-3A probe | |||
S3a box front.jpg|Front | S3a attenuator.jpg | 010-0364-00 ×10 attenuator for S-3A | ||
S3a probe external1.jpg|S-3A probe | S3a probe internal1.jpg | S-3A probe internal | ||
S3a probe internal1.jpg|S-3A probe internal | S3a probe internal2.jpg | S-3A probe internal | ||
S3a probe internal2.jpg|S-3A probe internal | S3a strobe board.jpg | S-3A strobe board | ||
S3a strobe board.jpg|S-3A strobe board | S3a probe_internal_bothsides.jpg | S-3A probe both sides | ||
S3a probe_internal_bothsides.jpg|S-3A probe both sides | S3A_schematic.jpg | S-3A schematic | ||
Tek s-3a risetime.jpg | S-3A showing 280 ps risetime when probing a 50 Ω impedance with no probe attenuators. | |||
Tek | |||
</gallery> | </gallery> | ||
[[Category:7000 and 3S series sampling heads]] | [[Category:7000 and 3S series sampling heads]] | ||
Latest revision as of 07:27, 8 July 2024
The Tektronix S-3 sampling head is a plug-in head for use with the 7000 series sampling plug-ins or the Type 3S2, 3S5, and 3S6 samplers.
The plug-in includes a permanently attached 1× probe with the sampling bridge enclosed in the probe. Optional 10× or 100× attenuator tips (010-0364-00, 010-0365-00) provide extended input voltage range; the optional VP-2 voltage pickoff converts it to a 50 Ω feed-through sampling head.
Key Specifications
| Rise time | ≤350 ps (×10, ≤400 ps; ×100, ≤500 ps) |
|---|---|
| Input impedance | 100 kΩ // 2.3 pF (×10, 1 MΩ // 2 pF; ×100, 1 MΩ // 1.7 pF) |
| Maximum signal | 2 Vp-p (×10, 20 Vp-p; ×100, 200 Vp-p) |
| Maximum safe input | max. ±100 V, max. sine input 20 Vp-p (×10 or ×100, max. ±350 V, max. sine input 200 Vp-p) |
| Features |
|
Links
Documents Referencing S-3
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Service Scope 53 Dec 1968.pdf | Article | Digital Systems Come Of Age | John Bowne | 1968 | 3T5 • 3T6 • 3S5 • 3S6 • S-1 • S-2 • S-3 • S-4 • 568 • 230 |
| Service scope dec 1968 ocr.pdf | Article | Digital Systems Come of Age | John Bowne | 1968 | 3T5 • 3T6 • 3S5 • 3S6 • S-1 • S-2 • S-3 • S-4 • 568 • 230 • 240 • 241 • 250 |
| Service Scope 52 Oct 1968.pdf | Article | The State of the Art in Sampling | Al Zimmerman | 1968 | S-1 • S-2 • S-3 • S-4 • S-50 • S-51 • 285 • 3S1 • 3S2 • 3S5 • 3S6 • 3T2 • 3T5 • 3T6 • 3T77A • 568 • 230 |
Differences between S-3 and S-3A
The S-3A sampling head has a 10× improvement in baseline shift due to cable flexing. All other specifications are identical to the ordinary S-3.
The major differences in design involves the strobe board in the box part of the probe eliminating the snap-off diode and adding a common mode choke in the S-3A , but some changes are also made to the circuits in the body of the probe.
Difference between the S-3 and the P6038
The S-3 probe contains a compensated attenuator before the sampling bridge. The P6038 does not. The S-3 probe has a JFET buffer between the holding cap and the probe cable. The P6038 does not. Both use the 152-0368-00 sampling bridge. The sampling pulse is generated by a snap-off diode (152-0368-00).
Repair of Sampling Diodes
Individuals have reported success in replacing the S-3 sampling diodes with Agilent matched pair Schottky diodes.
Pictures
S-3
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S-3 probe sampling bridge
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S-3 probe sampling bridge
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S-3 schematic
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010-0367-00 10X attenuator
S-3A
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Front
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S-3A probe
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010-0364-00 ×10 attenuator for S-3A
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S-3A probe internal
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S-3A probe internal
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S-3A strobe board
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S-3A probe both sides
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S-3A schematic
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S-3A showing 280 ps risetime when probing a 50 Ω impedance with no probe attenuators.
