S-1: Difference between revisions

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{{Plugin Sidebar 2|
{{Plugin Sidebar
title=Tektronix S-1 |
|manufacturer=Tektronix
summary=Sampling Head |
|series=7000 and 3S series sampling heads
image=S1-crop.jpg |
|type=S-1
caption=S-1 head |
|summary=Sampling Head  
introduced=1967 |
|image=S1-crop.jpg  
discontinued=1989 |
|caption=S-1 head  
series={{3S+7S}} |
|introduced=1967  
manuals=
|discontinued=1989  
* [http://bama.edebris.com/download/tek/s1/s1.djvu Tektronix S-1 Manual (DjVu)]
|designers=
* [http://w140.com/tek_s1.pdf Tektronix S-1 Manual (PDF)]
|manuals=
* [[Media:070-0763-00.pdf|Tektronix S-1 Manual]] (OCR)
* [[Media:Tek s-1 whole foldouts.pdf|Tektronix S-1 Manual Foldouts]] (whole, color)
* [[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.  
The '''S-1 sampling plug-in head''' provides a single [[GR-874]] 50 Ω input with a 350 ps rise-time.  


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{{Spec | Rise time | 350 ps }}
{{Spec | Rise time | 350 ps }}
{{Spec | Bandwidth | 1 GHz }}
{{Spec | Bandwidth | 1 GHz }}
{{Spec | Input amplitude | −1 V to +1 V  with ≤1 V<sub>p-p</sub> signals }}
{{Spec | Operating input voltage range | −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 | Maximum single sample step | 500 mV}}
{{Spec | Input impedance | 50 Ω ([[GR-874]]) }}
{{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 | Noise  | < 2 mV }}
{{Spec | Features | trigger pickoff for internal triggering }}
{{Spec | Features | trigger pickoff for internal triggering }}
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Operating the sampling head without the input connector terminated by a 50 Ω resistor or coaxial  
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  
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 orriving bock at the sampling  
strobe kickout signal being reflected from the open input connector, and arriving back at the sampling  
bridge while the bridge is conducting.
bridge while the bridge is conducting.
</blockquote>
</blockquote>


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

Latest revision as of 06:59, 10 December 2023

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