R: Difference between revisions
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caption=Type R | | caption=Type R | | ||
introduced=1958 | | introduced=1958 | | ||
discontinued= | discontinued=1967 | | ||
manuals= | manuals= | ||
* [http://bama.edebris.com/manuals/tek/r/ Tektronix Type R Manual (BAMA)] | * [http://bama.edebris.com/manuals/tek/r/ Tektronix Type R Manual (BAMA)] | ||
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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, | ||
and the Type [[H]] plug-in. It is the first plug-in with transistors. It was dropped after 1966 | and the Type [[H]] plug-in. It is the first plug-in with transistors. It was dropped after 1966. | ||
==Pictures== | ==Pictures== | ||
Revision as of 13:23, 2 August 2017
Template:Plugin Sidebar 2 The Tektronix Type R is a plug-in for 500-series scopes. It is designed to measure risetime of a NPN and PNP transistors, but it works well with FETs as well.
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 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. 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.
The collector signal is AC-coupled to 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.
Type R was introduced in 1958, along with the 551, 533, and 543 mainframes, and the Type H plug-in. It is the first plug-in with transistors. It was dropped after 1966.
