S-3: Difference between revisions

Latest revision as of 07:27, 8 July 2024

Tektronix S-3
Sampling Head S-3A head Compatible with 7000 and 3S series sampling heads Produced from 1969 to 1989 Manuals Tektronix S-3 Manual (OCR) Tektronix S-3 Manual Foldouts (whole, color) Tektronix S-3 Modification at Serial Number B020120 Tektronix S-3A Manual (070-1148-01 also exists) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

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 V_p-p (×10, 20 V_p-p; ×100, 200 V_p-p)
Maximum safe input	max. ±100 V, max. sine input 20 V_p-p (×10 or ×100, max. ±350 V, max. sine input 200 V_p-p)
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

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

S-3 probe sampling bridge
S-3 probe sampling bridge
S-3 schematic
010-0367-00 10X attenuator

S-3A

Front
S-3A probe
010-0364-00 ×10 attenuator for S-3A
S-3A probe internal
S-3A probe internal
S-3A strobe board
S-3A probe both sides
S-3A schematic
S-3A showing 280 ps risetime when probing a 50 Ω impedance with no probe attenuators.

@@ Line 9: / Line 9: @@
 |discontinued=1989
 |manuals=
-* [[Media:070-0765-00.pdf|Tektronix S-3 Manual]] (PDF) / [http://bama.edebris.com/download/tek/s3/s3.djvu @ BAMA] (DjVu)
+* [[Media:070-0765-00.pdf|Tektronix S-3 Manual]] (OCR)
-* [[Media:070-1148-01.pdf|Tektronix S-3A Manual]] (PDF))
+* [[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.
-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.
-==Specifications==
+{{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}}
-* Input rise time:
+==Links==
-** 1×: < 350 ps
+{{Documents|Link=S-3}}
-** 10×: < 400 ps
+{{PatentLinks|S-3}}
-** 100×: < 500 ps
-* Input impedance:
-** 1×: 100 kΩ || 2.3 pF at low frequency
-** 10×: 1 MΩ || 2 pF
-** 100×: 1 MΩ || 1.7 pF
-* Maximum signal voltage: 2 V<sub>p-p</sub>
-* The S-3 does not provide a trigger pickoff for internal triggering.
-* An offset voltage of either ±1 V or ±2 V can be selected via a toggle switch on the front panel.
-== Differences between S-3 and S-3A ==
+==Differences between S-3 and S-3A ==
-The S-3A sampling head has a 10&times; improvement in baseline shift due to cable flexing.
+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 gate board in the box part of the probe,
+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 ==
+==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.
+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 ==
@@ Line 50: / Line 52: @@
 ==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
+-0367-00 for P6038 S-3 chopper.jpg | [[010-0367-00]] 10X attenuator
+</gallery>
+'''S-3A'''
 <gallery>
-S3_frontend.png
+S3a box front.jpg                | Front
-S3a attenuator.jpg|010-0364-00 ×10 attenuator for S-3A
+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 s3 probe sample bridge.jpg|S-3 probe sampling bridge
+Tek s-3a risetime.jpg            | S-3A showing 280 ps risetime when probing a 50 Ω impedance with no probe attenuators.
-Tek s3 sample bridge2.jpg|S-3 probe sampling bridge
 </gallery>
 [[Category:7000 and 3S series sampling heads]]