5B40: Difference between revisions
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m (→top: clean up, replaced: title=Tektronix → manufacturer=Tektronix |series=5400-series scopes |type=, {{Plugin Sidebar 2 → {{Plugin Sidebar, series=5400-series scopes → designers=) |
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{{Plugin Sidebar | {{Plugin Sidebar| | ||
manufacturer=Tektronix |series=5400-series scopes |type= 5B40 | | |||
summary=60 MHz timebase | | summary=60 MHz timebase | | ||
image=TEK-5B40-B032137-1.JPG | | image=TEK-5B40-B032137-1.JPG | | ||
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introduced=1975 | | introduced=1975 | | ||
discontinued=1992 | | discontinued=1992 | | ||
designers= | | |||
manuals= | manuals= | ||
* [http://w140.com/tek_5b40.pdf Tektronix 5B40 Manual (PDF)] | * [http://w140.com/tek_5b40.pdf Tektronix 5B40 Manual (PDF)] | ||
Revision as of 01:07, 14 August 2021
The Tektronix 5B40 is a 60 MHz timebase for 5400-series scopes
Key Specifications
- please add
Internals
The trigger signal passes through source switching, coupling switching, and then a JFET source-follower buffer. Next, the signal is buffered by a PNP emitter-follower biased at around 5mA collector current. That provides a known (low) source impedance for driving the switch-selectable LF reject and HF reject filters. The output of the filters drives a discrete NPN differential amplifier, which drives U165, a 155-0109-01 Tek-made trigger IC.
