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S-53: Difference between revisions
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{{Plugin Sidebar 2| | |||
title=Tektronix S-53 | | |||
summary=Trigger Recognizer | | |||
image=Tek-s53.jpg | | |||
caption=S-53 head | | |||
series=[[3S2]], [[7S11]], [[7S12]] Sampling Plugins | | |||
introduced=1971 | | |||
discontinued=1989| | |||
manuals= | |||
* [http://w140.com/tek_s53_oct1987.pdf Tektronix S-53 Manual (October 1987, good quality, PDF)] | |||
* [http://w140.com/tek_s53.pdf Tektronix S-53 Manual (bad text, good schematic) (PDF)] | |||
* [http://w140.com/tek_s53_good.pdf Tektronix S-53 Manual (good text, bad schematic) (PDF)] | |||
* [http://w140.com/tek_s53_sch.png Tektronix S-53 Schematic (PNG)] | |||
}} | |||
The Tektronix S-53 '''Trigger Recognizer''' head can be used in the right bay of the [[7S12]] TDR/Sampler plug-in | |||
or externally in a type [[285]] enclosure. It essentially contains the entire trigger circuit of an oscilloscope. | |||
{{BeginSpecs}} | |||
{{Spec | Bandwidth | 1 GHz }} | |||
{{Spec | Input impedance | 50 Ω [[BNC connector]] }} | |||
{{Spec | Sensitivity | 10 mV to 1 V (p-p) }} | |||
{{Spec | Jitter | max. 15 ps or less (from input signal to trigger-out) }} | |||
{{Spec | Delay | 15 ns (from input signal to trigger-out) }} | |||
{{Spec | Trigger-out signal | 1 V into 50 Ω with 600 mV/ns slew rate }} | |||
{{EndSpecs}} | |||
==Internals== | |||
The S-53 uses tunnel diode triggering with an amplifier before the tunnel diode. | |||
The signal first passes through a compensated NPN differential amplifier, Q10 and Q12, which provides | |||
an adjustable trigger offset voltage and trigger polarity selection. Switching diodes CR6 and CR8 are | |||
used for selecting the trigger polarity. The differential amplifier (i.e., phase splitter) generates | |||
both phases, inverted and non-inverted. Depending on the position of the trigger polarity switch, one | |||
or the other of the phases is shunted by 200 Ω resistor. The two signals are buffered by common-base | |||
amplifiers Q20 and Q22, whose collector currents are summed. R25 sets up a bias current on trigger | |||
tunnel diode CR25. The extra current from Q20 or Q22 pushes CR25 over its peak current, and it switches | |||
to the high voltage state. | |||
==Pictures== | |||
<gallery> | <gallery> | ||
File:Tek-s53.jpg | |||
File:Tek s53 left.jpg | |||
File:Tek s-53.jpg|Front | |||
File:TEKS53 b40391.jpg|Front | |||
File:Tek s53 bottom.jpg | |||
File:Tek s53 top.jpg | |||
File:Tek s53 right.jpg | |||
File:Tek s53 right2.jpg | |||
File:Tek s53 rear.jpg | |||
File:7s12-7s11-1ghz-store.jpg | S-53 in a [[7S12]] displaying a 1 GHz sine using a [[S-6]] sampling head. 2<sup>nd</sup> channel (top) on a [[7S11]] with [[S-4]] sampling head. | |||
Tek s-53 in hand.jpg | |||
File:Tek s53 sch.png|Schematic | |||
</gallery> | </gallery> | ||
[[Category:7000 and 3S series sampling heads]] | |||