R: Difference between revisions

26 bytes removed ,  20 August 2021
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* [http://w140.com/mmm/tek-r.pdf Tektronix Type R Manual (PDF)]
* [[Media:070-286.pdf|Tektronix Type R Manual]] (PDF)
* [http://bama.edebris.com/manuals/tek/r/ Tektronix Type R Manual (BAMA, offline?)]
* [http://bama.edebris.com/manuals/tek/r/ Tektronix Type R Manual @ BAMA]
<!-- * [http://w140.com/tek_fcp/tek_type_r_factory_cal_proc.pdf Tektronix Type R Factory Calibration Procedure (PDF)] -->
<!-- * [http://w140.com/tek_fcp/tek_type_r_factory_cal_proc.pdf Tektronix Type R Factory Calibration Procedure (PDF)] -->
* [[Media:tek_type_r_fcp.pdf|Tektronix Type R Factory Calibration Procedure (PDF, OCR)]]
* [[Media:tek_type_r_fcp.pdf|Tektronix Type R Factory Calibration Procedure (PDF, OCR)]]
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The '''Tektronix Type R''' is a plug-in for [[500-series scopes]].
The '''Tektronix Type R''' is a plug-in for [[500-series scopes]].
It is designed to measure risetime of a NPN and PNP transistors,  
It is designed to measure risetime of a NPN and PNP transistors, but it works well with FETs as well.
but it works well with FETs as well.


Type R can operate in grounded-emitter or grounded-base configurations.   
Type R can operate in grounded-emitter or grounded-base configurations.   
In the grounded-emitter configuration, it provides a variable collector voltage through a collector resistor  
In the grounded-emitter configuration, it provides a variable collector voltage through a collector resistor which is used to sense the collector current.
which is used to sense the collector current.
It provides a base bias voltage and a base pulse signal, fed to the base of the transistor through a resistor.
It provides a base bias voltage and a base pulse signal,  
The base pulse is generated by a [[mercury switch]] and its rise time is specified to be less than 5 nanoseconds.   
fed to the base of the transistor through a resistor.
The base pulse is generated by a [[mercury switch]]  
and its rise time is specified to be less than 5 nanoseconds.   
Base and collector bias conditions can be set independently.   
Base and collector bias conditions can be set independently.   


The collector signal is AC-coupled to  
The collector signal is AC-coupled to an amplifier whose output is fed to the oscilloscope.
an amplifier whose output is fed to the oscilloscope.
The Type R has its own on-board low-voltage, high-current regulated power supplies which feature germanium power transistors.
The Type R has its own on-board low-voltage,  
high-current regulated power supplies which feature germanium power transistors.


Type R was [[introduced in 1958]], along with the [[551]], [[533]], and [[543]] mainframes,
Type R was [[introduced in 1958]], along with the [[551]], [[533]], and [[543]] mainframes,