S-3: Difference between revisions

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{{Plugin Sidebar 2|
title=Tektronix S-3 |
summary=Sampling Head |
image=S3a box front.jpg |
caption=S-3A head |
series={{3S+7S}} |
introduced=1969 |
discontinued=1989 |
manuals=
* [http://bama.edebris.com/download/tek/s3/s3.djvu Tektronix S-3 Manual (DjVu)]
* [http://w140.com/tek_s-3.pdf Tektronix S-3 Manual (PDF)]
}}
The S-3 sampling head is a plug-in head for use with the  
The S-3 sampling head is a plug-in head for use with the  
7000 series sampling plug-ins or with the Type [[3S2]], [[3S5]], or [[3S6]] samplers.  
7000 series sampling plug-ins or with the Type [[3S2]], [[3S5]], or [[3S6]] samplers.  
The plug-in includes a permanently attached 1x probe with the  
The plug-in includes a permanently attached probe with the sampling bridge enclosed in the probe. Optional 10× or 100× attenuator tips are available.
sampling bridge enclosed in the probe.
 
The input rise time is specified as less than 350ps for the 1x probe, less than 400ps with the optional 10x attenuator tip, and less than 500ps with the 100x attenuator tip.
The maximum operating signal voltage is 2Vp-p.
The S-3 does not provide a trigger pickoff for internal triggering.
An offset voltage of either +/- 1V or +/- 2V can be selected via a toggle switch on the front panel.


==Specifications==


== Input Characteristics ==
* Input rise time:
The probe tip input is equivalent to 100k resistor in parallel with about 2.3pF capacitance at low frequency.  
** 1×: < 350 ps
With the 10x or 100x attenuator tips, the probe input is equivalent to 1M paralleled with 2pF or 1.7pF, respectively.
** 10×: < 400 ps
** 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 10x 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, but some changes are also made to the circuits in the body of the probe.
The S-3A sampling head has a 10&times; 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, 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 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.
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.
 
== Repair of Sampling Diodes ==
== Repair of Sampling Diodes ==
Individuals have reported success in replacing the S-3 sampling diodes with Agilent matched pair Schottky diodes.
Individuals have reported success in replacing the S-3 sampling diodes with Agilent matched pair Schottky diodes.


* [http://bama.edebris.com/download/tek/s3/s3.djvu Tektronix S-3 Manual (DjVu)]
==Pictures==
* [http://w140.com/tek_s-3.pdf Tektronix S-3 Manual (PDF)]
 
<gallery>
<gallery>
Image:S3_frontend.png
Image:S3_frontend.png
File:S3a attenuator.jpg
File:S3a attenuator.jpg|S-3A attenuator
File:S3a box front.jpg
File:S3a box front.jpg|Front
File:S3a probe external1.jpg
File:S3a probe external1.jpg|S-3A probe
File:S3a probe internal1.jpg
File:S3a probe internal1.jpg|S-3A probe internal
File:S3a probe internal2.jpg
File:S3a probe internal2.jpg|S-3A probe internal
File:S3a strobe board.jpg
File:S3a strobe board.jpg|S-3A strobe board
File:S3a probe_internal_bothsides.jpg|S-3A probe both sides
File:Tek s3 probe sample bridge.jpg|S-3 probe sampling bridge
File:Tek s3 sample bridge2.jpg|S-3 probe sampling bridge
</gallery>
</gallery>
[[Category:7000 and 3S series sampling heads]]

Revision as of 11:12, 14 July 2015

Template:Plugin Sidebar 2 The S-3 sampling head is a plug-in head for use with the 7000 series sampling plug-ins or with the Type 3S2, 3S5, or 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 are available.

Specifications

  • Input rise time:
    • 1×: < 350 ps
    • 10×: < 400 ps
    • 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 Vp-p
  • 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

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, 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.

Repair of Sampling Diodes

Individuals have reported success in replacing the S-3 sampling diodes with Agilent matched pair Schottky diodes.

Pictures