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545: Difference between revisions
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introduced=1955 | | introduced=1955 | | ||
discontinued=1974 | | discontinued=1974 | | ||
summary=30 MHz oscilloscope | | summary=30 (33) MHz oscilloscope | | ||
manuals= | manuals= | ||
* [http://w140.com/mmm/tek-545.pdf Tektronix 545 Manual (PDF)] | * [http://w140.com/mmm/tek-545.pdf Tektronix 545 Manual (PDF)] | ||
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* [http://w140.com/navair_17-20aw-08.pdf Navair 17-20AW-08 Manual, which discusses the 545 (PDF)] | * [http://w140.com/navair_17-20aw-08.pdf Navair 17-20AW-08 Manual, which discusses the 545 (PDF)] | ||
}} | }} | ||
The '''Tektronix Type 545''' is a | The '''Tektronix Type 545''' is a 30 (33) MHz scope that takes [[letter-series and 1-series plug-ins]]. | ||
It has two timebases, which allows delayed triggering. | It has two timebases, which allows delayed triggering. | ||
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There was never a full-speed dual-trace plug-in — that would wait until Types [[1A1]] and [[1A2]], which came out with the 545B. | There was never a full-speed dual-trace plug-in — that would wait until Types [[1A1]] and [[1A2]], which came out with the 545B. | ||
== | {{BeginSpecs}} | ||
{{Spec | Bandwidth | 30 MHz (33 MHz with a 50 MHz plug-in such as Type [[1A1]]) }} | |||
{{EndSpecs}} | |||
''please add'' | |||
==Internals== | |||
Early 545 units have [[selenium rectifiers]]. Later units have silicon rectifiers. | Early 545 units have [[selenium rectifiers]]. Later units have silicon rectifiers. | ||
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The Type 545B differs significantly from the 545 and 545A. | The Type 545B differs significantly from the 545 and 545A. | ||
It has a partly solid-state, non-distributed vertical amp, and uses the [[154-0478-00]] CRT which is also used in the [[544]], [[546]], and [[547]]. Improvements in CRT design, including reduced deflection plate capacitance and increased sensitivity increased the vertical scale in the 545B from 4 to 6 divisions. The improved CRT also uses a ceramic envelope, with flat glass faceplate that has internal graticule markings, eliminating parallax errors. | It has a partly solid-state, non-distributed vertical amp, and uses the [[154-0478-00]] CRT which is also used in the [[544]], [[546]], and [[547]]. Improvements in CRT design, including reduced deflection plate capacitance and increased sensitivity increased the vertical scale in the 545B from 4 to 6 divisions. The improved CRT also uses a ceramic envelope, with flat glass faceplate that has internal graticule markings, eliminating parallax errors. | ||
==Links== | ==Links== | ||