3B2: Difference between revisions
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(I added photos that have less glare and better color rendition. The old photos were better than nothing, and the new photos are not perfect either, but better. https://w140.com/tekwiki/wiki/Tekwiki_Guidelines#Photos) |
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manufacturer=Tektronix |series=560-series scopes |type= 3B2 | | manufacturer=Tektronix |series=560-series scopes |type= 3B2 | | ||
summary=Delaying timebase | | summary=Delaying timebase | | ||
image=3b2 front.jpg | | image=Tek 3b2 front.jpg | | ||
caption=Tektronix 3B2 front | | caption=Tektronix 3B2 front | | ||
introduced=1963 | | introduced=1963 | | ||
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<gallery> | <gallery> | ||
Tek 3b2 front.jpg | |||
Tek 3b2 right.jpg | |||
Tek 3b2 left.jpg | |||
3b2 front.jpg | 3b2 front.jpg | ||
3b2 right.jpg | 3b2 right.jpg | ||
Revision as of 06:10, 11 July 2023
The Tektronix Type 3B2 is a delaying timebase introduced in 1963 for 560-series scopes except the 560 and 565. It can trigger on signals up to 30 MHz.
The 3B2 has a 6CW4 Nuvistor triode cathode-follower buffer amplifier at the trigger input, followed by a differential trigger amplifier made of a pair of PNP transistors, with a 2 mA tunnel diode acting as the actual trigger.
The 3B2 has a 1 MHz crystal oscillator and a counter made of discrete transistors. It generates output pulses that enable it to communicate with a digital unit such as the 6R1 or 6R1A.
The 3B2 uses a 6AL5 tube as the disconnect diode for the sweep.
Key Specifications
- please add
