S-1: Difference between revisions

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The S-1 [[sampling_oscilloscope|sampling]] plug-in head provides a single
{{Plugin Sidebar 2|
[[Connectors#GR-874|GR-874]] 50-ohm input with a 350ps rise-time.  
title=Tektronix S-1 |
The S-1 can be used with the 7000 series of sampling plug-ins,
summary=Sampling Head |
as well as the 3S series of sampling units.
image=S1-crop.jpg |
A trigger pickoff is provided for internal triggering,
caption=S-1 head |
and displayed noise is specified as less than 2mV.
introduced=1967 |
The S-1 accepts an input voltage range of -1V to +1V
discontinued=1989 |
with less than 1Vpp input signal amplitude.
series={{3S+7S}} |
 
manuals=
* [http://bama.edebris.com/download/tek/s1/s1.djvu Tektronix S-1 Manual (DjVu)]
* [http://bama.edebris.com/download/tek/s1/s1.djvu Tektronix S-1 Manual (DjVu)]
* [http://w140.com/tek_s1.pdf Tektronix S-1 Manual (PDF)]
* [http://w140.com/tek_s1.pdf Tektronix S-1 Manual (PDF)]
}}
The '''S-1 sampling plug-in head''' provides a single [[GR-874]] 50 Ω input with a 350 ps rise-time.
The S-1 can be used with the 7000 series of [[sampling_oscilloscope|sampling]] plug-ins, as well as the 3S series of sampling units.
{{BeginSpecs}}
{{Spec | Rise time | 350 ps }}
{{Spec | Bandwidth | 1 GHz }}
{{Spec | Input amplitude | −1 V to +1 V  with ≤1 V<sub>p-p</sub> signals }}
{{Spec | Maximum input  | ±5 V<sub>DC</sub> or sine of 10 V<sub>p-p</sub> up to 10 MHz }}
{{Spec | Input impedance | 50 Ω  ([[GR-874]]) }}
{{Spec | Noise  | < 2 mV }}
{{Spec | Features | trigger pickoff for internal triggering }}
{{EndSpecs}}
==Links==
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/S-1.html S-1 page @ amplifier.cd]
==Internals==
The S-1 uses a two-diode sampling gate which has relatively high "kick-out" (leakage of the strobe signal out of the input). 
The manual cautions,
<blockquote>
Operating the sampling head without the input connector terminated by a 50 Ω resistor or coaxial
cable will cause a vertical shift of the zero signal baseline by a few millivolts. This is caused by the
strobe kickout signal being reflected from the open input connector, and arriving back at the sampling
bridge while the bridge is conducting.
</blockquote>
The sampling bridge strobe signal is generated by an [[avalanche transistor]] followed by a [[step recovery diode]].
==Pictures==


<gallery>
<gallery>
Image:Tek s-1.jpg
Tek s-1.jpg
Image:Tek s1 internal strobe.jpg|Strobe board
Tek s1 internal strobe.jpg | Strobe board
Image:Tek s1 internal pre.jpg|Preamp board
Tek s1 internal pre.jpg | Preamp board
Image:Tek s1 front.jpg
Tek s1 front.jpg | S-1 front
File:S1 diode.jpg
S1 diode.jpg   | Diode mount in S-1
File:S1 diode2.jpg
S1 diode2.jpg | Diode mount in S-1
File:S1 diode3.jpg
S1 diode3.jpg | Diode mount in S-1
File:S-52_s-1_rt.jpg
S-52_s-1_rt_brighter.jpg | S-1 in a [[3S2]] sampler / [[567]] scope
Tek s1 sampler schematic.png|Tektronix S-1 sampler
Tek 7s11 s-1.jpg|[[7S11]] with S-1
</gallery>
</gallery>
[[Category:7000 and 3S series sampling heads]]
[[Category:GR874]]

Revision as of 22:57, 31 August 2019

Template:Plugin Sidebar 2

The S-1 sampling plug-in head provides a single GR-874 50 Ω input with a 350 ps rise-time.

The S-1 can be used with the 7000 series of sampling plug-ins, as well as the 3S series of sampling units.

Key Specifications

Rise time 350 ps
Bandwidth 1 GHz
Input amplitude −1 V to +1 V with ≤1 Vp-p signals
Maximum input ±5 VDC or sine of 10 Vp-p up to 10 MHz
Input impedance 50 Ω (GR-874)
Noise < 2 mV
Features trigger pickoff for internal triggering

Links

Internals

The S-1 uses a two-diode sampling gate which has relatively high "kick-out" (leakage of the strobe signal out of the input).

The manual cautions,

Operating the sampling head without the input connector terminated by a 50 Ω resistor or coaxial cable will cause a vertical shift of the zero signal baseline by a few millivolts. This is caused by the strobe kickout signal being reflected from the open input connector, and arriving back at the sampling bridge while the bridge is conducting.

The sampling bridge strobe signal is generated by an avalanche transistor followed by a step recovery diode.

Pictures