S-51: Difference between revisions

Jump to navigation Jump to search

S-51 (view source)

Revision as of 15:53, 2 February 2021

2,370 bytes added ,  2 February 2021
no edit summary
No edit summary
No edit summary
(18 intermediate revisions by 3 users not shown)
Line 1: Line 1:
The Tektronix Type S-51 is a trigger head.  From a repetitive input signal in the 1GHz to 18GHz
{{Plugin Sidebar 2|
range, the S-51 generates trigger pulses which have a fixed time relationship with the input signal.
title=Tektronix S-51 |
summary=Synchronizing Head |
image=Tek s-51 1.jpg |
caption=S-51 head |
series=[[3S2]], [[7S11]], [[7S12]] Sampling Plugins |
introduced=1969 |
discontinued=1989 |
manuals=
* [http://w140.com/tek_s-51.pdf Tektronix S-51 Manual (PDF)]
* [[Media:Tek s-51 fcp march 1969.pdf|Tektronix S-51 Factory Calibration Procedure, March 1969 (PDF, OCR)]]
}}
 
The '''Tektronix S-51''' is a synchronizing head for [[sampling oscilloscope]] systems
such as the [[3S2]] or [[7S12]] which use S-series sampling heads.   
It was designed by [[Murlan Kaufman]].
 
From a periodic input signal in the 1 GHz to 18 GHz range, the S-51 generates trigger  
pulses which have a fixed time relationship with the input signal.
The input is a 50 Ω [[SMA connector]]. The trigger output signal is available
through a [[BSM connector]] on the front panel as well as through the internal interface.
 
Equivalent-time sampling equipment generally requires the input signal to be repetitive. 
The S-51 is more restrictive; it is specifically designed for periodic signals. 
This is true of all oscilloscopes that use synchronization instead of triggering.
 
{{BeginSpecs}}
{{Spec | Input impedance | 50 Ω real // 1 pF }}
{{Spec | Input sensitivity | min. 100 mV<sub>p-p</sub>}}
{{Spec | Kick-out | ma. 400 mV }}
{{Spec | Jitter | max. 15 ps for input signals < 5 GHz, max. 10 ps above 5 GHz }}
{{EndSpecs}}
 
==Internals==
The S-51 contains a [[tunnel diodes|tunnel diode]] sync oscillator that oscillates at about 200 MHz (165 MHz to 285 MHz).
The input signal is coupled with this oscillator, resulting in injection locking.
When locked, f<sub>osc</sub> is a subharmonic of f<sub>in</sub>:
* f<sub>osc</sub> = f<sub>in</sub> / n, where n is an integer between 5 and 90, inclusive
* f<sub>osc</sub> is between 165 MHz and 285 MHz.
The approximate range of f<sub>osc</sub> is adjustable.
 
Trigger pulses are produced at the beginning of a cycle of the sync oscillator. 
After each trigger pulse is produced, the sync oscillator is turned off for about 15 microseconds.
As a result, the S-51 produces trigger pulses at a repetition rate of approximately 67 kHz.
Even without any input, the S-51 will produce trigger pulses at approximately 67 kHz.
 
The tunnel diode, D2 in the schematic, that forms the sync oscillator is Tek part number [[153-0041-00]].
 
==Pictures==


<gallery>
<gallery>
Image:S-51.jpg
Tek s-51 1.jpg
Image:S-51 schem2.png
Tek s-51 2.jpg
S-51.jpg
Tek s-51 internal1.jpg
Tek s-51 internal2.jpg
Tek s-51 internal3.jpg
S-51 schem2.png
Tek s51 on cart.jpg
Tek s51 front2.jpg
</gallery>
</gallery>
[[Category:7000 and 3S series sampling heads]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/3234...59046"

Navigation menu