S-53: Difference between revisions

Latest revision as of 10:54, 19 June 2024

Tektronix S-53
Trigger Recognizer S-53 head Compatible with 7000 and 3S series sampling heads Produced from 1971 to 1989 Manuals Tektronix S-53 Manual, Oct 1987 Alternate copies Tektronix S-53 Manual (bad text, good schematic) Tektronix S-53 Manual (good text, bad schematic) S-53 Engineering Instrument Specification cover page (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

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.

Key Specifications

Bandwidth	1 GHz
Input impedance	50 Ω BNC connector
Sensitivity	10 mV to 1 V (p-p)
Jitter	max. 15 ps or less (from input signal to trigger-out)
Delay	15 ns (from input signal to trigger-out)
Trigger-out signal	1 V into 50 Ω with 600 mV/ns slew rate, BSM connector

Links

Documents Referencing S-53

(no results)

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

Front
Front
S-53 in a 7S12 displaying a 1 GHz sine using a S-6 sampling head. 2^nd channel (top) on a 7S11 with S-4 sampling head.
Schematic

@@ Line 1: / Line 1: @@
-The Tektronix S-53 Trigger Recognizer is essentially the entire trigger circuit of an oscilloscope.  It
+{{Plugin Sidebar
-is rated to 1GHz and has a BNC input with 50-ohm impedance.  It uses tunnel diode triggering with an
+|manufacturer=Tektronix
-amplifier before the tunnel diode.  The input signal to trigger out jitter is rated at 15ps or less.
+|series=7000 and 3S series sampling heads
-The trigger-out signal is 1V into 50 ohms, with 600mV/ns slew rate.
+|type=S-53
+|summary=Trigger Recognizer
+|image=Tek-s53.jpg
+|caption=S-53 head
+|introduced=1971
+|discontinued=1989
+|designers=
+|manuals=
+* [[Media:070-1147-00.pdf|Tektronix S-53 Manual]], Oct 1987
+<small>
+''Alternate copies''
+* [https://w140.com/tek_s53.pdf Tektronix S-53 Manual (bad text, good schematic)]
+* [https://w140.com/tek_s53_good.pdf Tektronix S-53 Manual (good text, bad schematic)]
+</small>
+* [[Media:Tek s-53 eis cover.pdf|S-53 Engineering Instrument Specification cover page]]
+}}
+The Tektronix S-53 '''Trigger Recognizer''' head can be used in the right bay of the [[7S12|7S12 TDR/Sampler plug-in]]
+or externally in a type [[285]] enclosure. It essentially contains the entire trigger circuit of an oscilloscope.
-The signal first passes through a compensated NPN differential amplifier, Q10 and Q12, which provides
+{{BeginSpecs}}
-an adjustable trigger offset voltage and trigger polarity selection. Switching diodes CR6 and CR8 are
+{{Spec | Bandwidth | 1 GHz }}
-used for selecting the trigger polarity.  The differential amplifier (i.e., phase splitter) generates
+{{Spec | Input impedance | 50 Ω [[BNC connector]] }}
-both phases, inverted and noninverted.  Depending on the position of the trigger polarity switch, one
+{{Spec | Sensitivity | 10 mV to 1 V (p-p) }}
-or the other of the phases is shunted by 200 ohm resistor.  The two signals are buffered by common-base
+{{Spec | Jitter | max. 15 ps or less (from input signal to trigger-out) }}
-amplifiers Q20 and Q22, whose collector currents are summed.  R25 sets up a bias current on trigger
+{{Spec | Delay | 15 ns (from input signal to trigger-out) }}
-tunnel diode CR25.  The extra current from Q20 or Q22 pushes CR25 over its peak current, and it switches
+{{Spec | Trigger-out signal | 1 V into 50 Ω with 600 mV/ns slew rate, [[BSM connector]] }}
-to the high voltage state.
+{{EndSpecs}}
-* [http://w140.com/tek_s53.pdf Tektronix S-53 Manual (bad text, good schematic) (PDF)]
+==Links==
-* [http://w140.com/tek_s53_good.pdf Tektronix S-53 Manual (good text, bad schematic) (PDF)]
+{{Documents|Link=S-53}}
-* [http://w140.com/tek_s53_sch.png Tektronix S-53 Schematic (PNG)]
+{{PatentLinks|S-53}}
+==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>
-Image:Tek s-53.jpg|Front
+Tek-s53.jpg
-Image:TEKS53 b40391.jpg|Front
+Tek s-53 on cart.jpg
-Image:Tek s53 sch.png|Schematic
+Tek s53 left.jpg
+Tek s-53.jpg|Front
+TEKS53 b40391.jpg|Front
+Tek s53 bottom.jpg
+Tek s53 top.jpg
+Tek s53 right.jpg
+Tek s53 right2.jpg
+Tek s53 rear.jpg
+s12-7s11-1ghz-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
+Tek s53 sch.png|Schematic
 </gallery>
+[[Category:7000 and 3S series sampling heads]]