214
The Tektronix 214 is a small portable dual-trace analog CRT storage scope with a bandwidth of 500 kHz.
The 214 "Miniscope" was developed by a group led by Dave Allen.
Key Specifications
| Bandwidth | 500 kHz above 10 mV/Div ; 400 kHz @ 5 mV/Div, 200 kHz @ 2 mV/Div, 100 kHz @ 1 mV/Div |
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| Deflection | 1 mV/Div to 50 V/Div, 1–2–5 sequence |
| Input impedance | 1 MΩ (integral probes) |
| Writing speed | > 80 Div/ms (500 Div/ms in Automatic Enhance) |
| AC operation | 110 V to 126 V only, max. 3 W |
| Battery | 10 × A size NiCd, 2.5–3.5 hours in store mode, 3.5–5 hours in non-store mode, 8 hours to charge (instrument off) |
| CRT | 154-0695-00 (SN -49999), 154-0732-00 (SN 50000+) |
Links
Pictures
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Power supply schematic
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CRT and Storage schematic
Internal
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214 Internals
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214 Input Board
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214 Single Sweep Board
Custom ICs used in the 214
| Page | Model | Part nos | Description | Designers | Used in |
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| 155-0047-00 | P050B | 155-0047-00 | dual variable-gain amplifier | Dave Allen | 211 • 212 • 214 |
| 155-0048-01 | M052F | 155-0048-00 • 155-0048-01 • 155-0055-00 • 155-0055-01 | trigger sweep | Dave Allen | 211 • 212 • 213 • 214 • 432 • 433 • 5B12N • 5B13N • 5L4N • 603 • 604 • 605 • 606 • 606A • 607 • 624 • SC501 • R7912 |
| 155-0083-00 | M105 | 155-0083-00 | dual operational amplifier and dual current source | Dave Allen | 212 • 214 |