S-1: Difference between revisions

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The S-1 [[sampling_oscilloscope|sampling]] plug-in head provides a single  
{{Plugin Sidebar
[[Connectors#GR-874|GR-874]] 50-ohm input with a 350ps rise-time.
|manufacturer=Tektronix
The S-1 can be used with the 7000 series of sampling plug-ins,
|series=7000 and 3S series sampling heads
as well as the 3S series of sampling units.
|type=S-1
A trigger pickoff is provided for internal triggering,
|summary=Sampling Head
and displayed noise is specified as less than 2mV.
|image=S1-crop.jpg
The S-1 accepts an input voltage range of -1V to +1V
|caption=S-1 head
with less than 1Vpp input signal amplitude.
|introduced=1967
|discontinued=1989
|designers=
|manuals=
* [[Media:070-0763-00.pdf|Tektronix S-1 Manual]] (PDF)
* [http://bama.edebris.com/download/tek/s1/s1.djvu Tektronix S-1 Manual @ BAMA] (DjVu)
* [[Media:Tek type S-1 factory cal proc.pdf|Tektronix Type S-1 Factory Calibration Procedure (PDF)]]
}}
The '''S-1 sampling plug-in head''' provides a single [[GR-874]] 50 Ω input with a 350 ps rise-time.  


* [http://bama.edebris.com/download/tek/s1/s1.djvu Tektronix S-1 Manual (DjVu)]
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.
* [http://w140.com/tek_s1.pdf Tektronix S-1 Manual (PDF)]
 
{{BeginSpecs}}
{{Spec | Rise time | 350 ps }}
{{Spec | Bandwidth | 1 GHz }}
{{Spec | Operating input voltage range | −1 V to +1 V  with ≤1 V<sub>p-p</sub> signals }}
{{Spec | Maximum single sample step | 500 mV}}
{{Spec | Maximum input voltage  | ±5 V<sub>DC</sub> or sine of 10 V<sub>p-p</sub> up to 10 MHz }}
{{Spec | Input impedance | 50 Ω ±1% ([[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]], called snap-off diode in Tek lingo.
 
==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 13:31, 20 August 2021

Tektronix S-1
Sampling Head
S-1 head

Compatible with 7000 and 3S series sampling heads

Produced from 1967 to 1989

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

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
Operating input voltage range −1 V to +1 V with ≤1 Vp-p signals
Maximum single sample step 500 mV
Maximum input voltage ±5 VDC or sine of 10 Vp-p up to 10 MHz
Input impedance 50 Ω ±1% (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, called snap-off diode in Tek lingo.

Pictures

  • Strobe board

    Strobe board

  • Preamp board

    Preamp board

  • S-1 front

    S-1 front

  • Diode mount in S-1

    Diode mount in S-1

  • Diode mount in S-1

    Diode mount in S-1

  • Diode mount in S-1

    Diode mount in S-1

  • S-1 in a 3S2 sampler / 567 scope

    S-1 in a 3S2 sampler / 567 scope

  • Tektronix S-1 sampler

    Tektronix S-1 sampler

  • 7S11 with S-1

    7S11 with S-1

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