468
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The Tektronix 468 is a digital/analog scope, essentially a 465B with a 25 MS/s, 8-bit digitizer added.
The 468 is controlled by an Intel 8085A processor.
Key Specifications
| Bandwidth | 100 MHz analog, 10 MHz digital repetitive, 2.5 MHz digital single-shot |
|---|---|
| Deflection | 5 mV/Div to 5 V/Div, 1–2–5; CH1-CH2 cascaded – 1 mV/Div, 50 MHz |
| Sweep | 20 ns/Div to 50 ms/Div (B) or 500 ms/Div (A), 1–2–5, ×10 magnifier to 2 ns/Div |
| Sampling rate | 25 MS/s |
| Resolution | 8 bit |
| Input impedance | 1 MΩ // 20 pF |
| Z Axis | 5 Vp-p (max. 25 V DC+peak AC) into 25 kΩ (down to 200 Ω at 2 MHz and above), 50 MHz |
| CRT | 154-0731-00, 8×10 cm², P31 phosphor, 18.5 kV acceleration (–2.45 kV / +16 kV) |
| Power | 90–210 V, 108–132 V, 198–242 V or 216–250 V; 48–440 Hz; 115 W/140 VA, max. 150 W/190 VA |
| Dimensions | 18.3 cm × 29.2 cm × 55 cm (H×W×D) |
| Weight | 15 kg (33 lb) |
Options
- Opt.02 − GPIB (A17 board)
- Opt.04 − EMI shielding
- Opt.05 − TV Sync Separator (A29 board)
- Opt.11 − Analog X-Y/Plotter Output (A27 board)
- Opt.12 − Averaging - Standard on SN B032430 and up
Repair issues
→ see 468/Repairs page
Links
- Tektronix 468 Repair Vol.1 / Vol.2 / HV multiplier/CRT replacement by vintageTek Museum @ YouTube
- Tektronix 468 @ amplifier.cd
Documents Referencing 468
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tekscope 1980 V12 N2.pdf | Article | New Products | 1980 | 7854 • 468 • AA501 • SG505 • CG551AP • 1900 • 7612D | |
| Tekscope 1980 V12 N3.pdf | Article | 100 MHz Portable Oscilloscope Packs Digital Storage Power | Bruce Blair | 1980 | 468 |
Pictures
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-
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front
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top and A16
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Storage & Display A16
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right Trigger A12
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left V Preamp A11
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bottom Interface Board A15
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rear
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Processor Board Set
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Microprocessor Board A21
-
Memory Board A18 (TRW part on the right is the TDC1007 A/D converter)
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Timebase/Power Supply A22
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Timebase Oscillator A22
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A17 GPIB OPT A2
Components
Some Parts Used in the 468
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 154-0731-00 | 154-0731-00 • 154-0731-01 • 154-0731-02 • 154-0731-04 | CRT | CRT | Telequipment D75 • 455 • 465 • 465B • 468 |
| 155-0022-00 | 155-0022-00 • 155-0022-01 | Monolithic integrated circuit | analog multiplexer | 147 • 148 • 149 • 335 • 468 • 1430 • 1441 • 1461 • 1900 • 1910 • 2220 • 2221 • 2230 • 5223 • 5403 • 5440 • 5441 • 5443 • 5444 • 5A38 • 7313 • 7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • R7912 • 7912AD • 7912HB • 7904 • R7903 • 7904A • 7934 • 7A12 • 7A18 • 7A18A • 7A18N • 7B52 • 7B53N • 7D10 • 7D11 • 7D12 • NT-7000 • P7001 |
| 155-0078-00 | 155-0078-xx • 155-0273-00 • 155-0274-00 | Monolithic integrated circuit | broadband amplifier | 464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010 |
| 155-0115-00 | 155-0115-00 | Hybrid integrated circuit | vertical amplifier | 335 • 464 • 465 • 465B • 466 • 468 |
| Intel 8085A | 156-1088-00 | Monolithic integrated circuit | 8-bit microprocessor | 308 • 468 • 4025 • 7A42 • 7D02 • AFG5101 • AFG5102 • PFG5105 |
| Mostek MK36000 | Monolithic integrated circuit | 8K×8 mask-programmable ROM | 468 • 7854 • FG5010 | |
| TRW TDC1007 | 156-1345-00 | Monolithic integrated circuit | 8-bit, 20 MSPS flash A/D converter | 468 |