3B2: Difference between revisions
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(on limited demand list in 1973 catalog) |
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the [[560]] and [[565]]. It can trigger on signals up to 30 MHz. | 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 [[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. | The 3B2 has a 1 MHz crystal oscillator and a counter made of discrete transistors. | ||
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<gallery> | <gallery> | ||
3b2 front.jpg | |||
3b2 right.jpg | |||
3b2 logic.jpg | |||
3b2 bottom.jpg | |||
3b2 top.jpg | |||
</gallery> | </gallery> | ||
[[Category:560 series plugins]] | [[Category:560 series plugins]] | ||
Revision as of 18:37, 3 February 2018
Template:Plugin Sidebar 2 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.
Specifications
please add
