4S1: Difference between revisions
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|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [[Media:070-329.pdf| | * [[Media:070-329.pdf|Tektronix 4S1 Manual (late)]] (PDF) | ||
* [http://w140.com/tek_661_4s1_5t1_preliminary.pdf Tek 661 4S1 5T1 Preliminary Manual (PDF)] | * [http://w140.com/tek_661_4s1_5t1_preliminary.pdf Tek 661 4S1 5T1 Preliminary Manual (PDF)] | ||
* [[Media:Tek 4s1 cal outline.pdf|Tektronix 4S1 Calibration Outline (PDF, OCR)]] | * [[Media:Tek 4s1 cal outline.pdf|Tektronix 4S1 Calibration Outline (PDF, OCR)]] | ||
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From serial number 101 to 1349, the low frequency path starts with a 25 kΩ resistor that DC-couples the input signal to a [[2N1429]] PNP emitter-follower stage. | From serial number 101 to 1349, the low frequency path starts with a 25 kΩ resistor that DC-couples the input signal to a [[2N1429]] PNP emitter-follower stage. | ||
After that is a [[151-103]] NPN common-emitter. The high frequency path starts with a trigger pick-off | After that is a [[151-103]] NPN common-emitter. The high frequency path starts with a trigger pick-off transformer on the input. | ||
transformer on the input. The pick-off signal feeds a common-base amplifier that uses a [[2N700]] PNP transistor. | The pick-off signal feeds a common-base amplifier that uses a [[2N700]] PNP transistor. | ||
The low frequency and high frequency trigger paths meet at the trigger output of the 4S1. | The low frequency and high frequency trigger paths meet at the trigger output of the 4S1. | ||
From there, the trigger signal passes through the 661, and into a [[5T1]] or [[5T3]]. | From there, the trigger signal passes through the 661, and into a [[5T1]] or [[5T3]]. | ||