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The S-3 sampling head is a plug-in head for use with the | {{Plugin Sidebar 2| | ||
7000 series sampling plug-ins or | 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 '''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 | 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. | |||
==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 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 | 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 == | == 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 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. | ||
==Pictures== | |||
<gallery> | <gallery> | ||
S3_frontend.png | |||
S3a attenuator.jpg|010-0364-00 ×10 attenuator for S-3A | |||
S3a box front.jpg|Front | |||
S3a probe external1.jpg|S-3A probe | |||
S3a probe internal1.jpg|S-3A probe internal | |||
S3a probe internal2.jpg|S-3A probe internal | |||
S3a strobe board.jpg|S-3A strobe board | |||
S3a probe_internal_bothsides.jpg|S-3A probe both sides | |||
Tek s3 probe sample bridge.jpg|S-3 probe sampling bridge | |||
Tek s3 sample bridge2.jpg|S-3 probe sampling bridge | |||
</gallery> | </gallery> | ||
[[Category:7000 and 3S series sampling heads]] |