S-53: Difference between revisions

From TekWiki
Jump to navigation Jump to search
No edit summary
("compatible with" links improved)
Line 4: Line 4:
image=S53-crop.jpg |
image=S53-crop.jpg |
caption=S-53 head |
caption=S-53 head |
series=[[:Category:Sampling plugins|7000/S3 series Sampling Plugins]] |
series=[[3S2]], [[7S11]], [[7S12]] Sampling Plugins |
years=? – ? |
years=? – ? |
manuals=
manuals=
Line 13: Line 13:
}}
}}
The Tektronix S-53 '''Trigger Recognizer''' is essentially the entire trigger circuit of an oscilloscope.   
The Tektronix S-53 '''Trigger Recognizer''' is essentially the entire trigger circuit of an oscilloscope.   
It is rated to 1 GHz and has a BNC input with 50 Ω impedance.  It uses tunnel diode triggering with an
 
amplifier before the tunnel diode.  The jitter from input signal to trigger-out is rated at 15 ps or less.
The S-53 uses tunnel diode triggering with an amplifier before the tunnel diode.   
The trigger-out signal is 1 V into 50 Ω with 600 mV/ns slew rate.


The signal first passes through a compensated NPN differential amplifier, Q10 and Q12, which provides
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  
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
used for selecting the trigger polarity.  The differential amplifier (i.e., phase splitter) generates
both phases, inverted and noninverted.  Depending on the position of the trigger polarity switch, one
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
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  
amplifiers Q20 and Q22, whose collector currents are summed.  R25 sets up a bias current on trigger  
Line 27: Line 26:


==Specifications==
==Specifications==
{{BeginSpecs}}
{{Spec | Bandwidth | 1 GHz }}
{{Spec | Input impedance | 50 Ω [[BNC connector]] }}
{{Spec | Jitter | max. 15 ps or less (from input signal to trigger-out) }}
{{Spec | Trigger-out signal | 1 V into 50 Ω with 600 mV/ns slew rate }}
{{EndSpecs}}


==Pictures==
==Pictures==

Revision as of 08:51, 17 July 2014

{{{manufacturer}}} {{{type}}}
Trigger Recognizer
S-53 head

Compatible with [[3S2, 7S11, 7S12 Sampling Plugins]]

Produced from {{{introduced}}} to {{{discontinued}}}

Manuals
[[Category:Introduced in {{{introduced}}}]]
Manuals – Specifications – Links – Pictures

The Tektronix S-53 Trigger Recognizer is essentially the entire trigger circuit of an oscilloscope.

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.

Specifications

Key Specifications

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

Pictures