3T7
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The Tektronix 3T7 is a sampling timebase and pulser plug-in for 560-series scopes, introduced in 1971.
When used with a 3S7, a TDR system is formed.
The pulse is produced by a 21 mA, 1.5 pF tunnel diode, CR587, made by GE with Tektronix part number 152-0489-00.
The interface between the GR-874 connector and the printed circuit board is described in US Patent 3,426,311.
The 3T7 uses a CA3051 dual amplifier chip.
Specifications
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Pictures
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3T7
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Right
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Front
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Left
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Right
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Top
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Bottom
Components
Some Parts Used in the 3T7
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 155-0035-00 | 155-0035-00 • 155-0116-00 | Monolithic integrated circuit | quad op-amp | 3110 • 3S7 • 3T7 • 492 • 492A • 492AP • 492P • 494 • 494P • 496 • 496P • 4010 • 4011 • 4012 • 4013 • 7L5 • 7L12 • 7L13 • 7L14 • 7L18 • 7S11 • 7T11 • 7S12 • S-6 • 1461 • 4602 • P7001 • 613 • 653 |
| 1N3182 | 152-0269-00 | Discrete component | varactor diode | 3L5 • 1L5 • 3T7 • 492 • 465M • 7844 • 2465 |
| STD962 | 152-0169-00 | Discrete component | 1 mA, 10 pF tunnel diode | L140 • Pentrix L20 • Pentrix L30 • 067-0518-00 • 067-0594-00 • 1L60 • 1S2 • 1503 • 3B5 • 3T7 • 4054 • 4054A • 4902 • 5S14N • 7S14 • 7T11 |