212
Jump to navigation
Jump to search
The Tektronix 212 is a small portable analog dual-trace CRT oscilloscope with a bandwidth of 500 kHz. The 212 "Miniscope" was developed by a group led by Dave Allen.
Key Specifications
| Bandwidth | 500 kHz (reduced to 400/300/100 kHz in 5/2/1 mV/Div ranges) |
|---|---|
| Deflection | 1 mV/Div to 50 V/Div, 1-2-5, and variable (up to 125 V/Div), or X-Y (X via Ch1) |
| Sweep | 500 ms/Div to 5 μS/Div, 1-2-5, and variable magnifier 1-5 × |
| Input impedance | 1 MΩ // 140 pF (160 pF below 100 mV/Div) |
| Trigger sensitivity | 0.2 Div internal, 1 V external (banana jack input) |
| CRT | 6 × 10 divisions of 0.203" (5.16 mm), 154-0699-00 tube, P31 phosphor, 1 kV acceleration |
| Power | 10 internal size A NiCd cells, 3-5 hour operation, or AC line, < 3 W |
Gerbers
Links
- Tektronix 212 Portable Scope Repair by NFM @ YouTube
Prices
| Year | 1986 |
|---|---|
| Catalog Price | $2,045 |
| In 2023 Dollars | $5,700 |
Pictures
-
Front
-
Front right
-
Right
-
Rear right
-
Left
-
Bottom
-
With manual
-
Internal
-
-
re-built battery pack
-
-
-
-
Components
Some Parts Used in the 212
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 154-0699-00 | 154-0699-00 • 154-0699-50 | CRT | directly-heated CRT for miniature scopes | 211 • 212 • SC501 |
| 155-0047-00 | 155-0047-00 | Monolithic integrated circuit | dual variable-gain amplifier | 211 • 212 • 214 |
| 155-0048-01 | 155-0048-00 • 155-0048-01 • 155-0055-00 • 155-0055-01 | Monolithic integrated circuit | trigger sweep | 211 • 212 • 213 • 214 • 432 • 433 • 5B12N • 5B13N • 5L4N • 603 • 604 • 605 • 606 • 606A • 607 • 624 • SC501 • R7912 |
| 155-0083-00 | 155-0083-00 | Monolithic integrated circuit | dual operational amplifier and dual current source | 212 • 214 |